<?xml version="1.0" encoding="US-ASCII"?>
<!-- RR Donnelley Xcelerate Taxonomy Schema, based on XBRL 2.1  http://www.rrdonnelley.com/ -->
<!-- Version: 6.22.4 -->
<!-- Round: 4 -->
<!-- Creation date: 2016-04-27T00:46:21Z -->
<!-- Copyright (c) 2005-2013 R.R. Donnelley & Sons Company All Rights Reserved. -->
<schema xmlns="http://www.w3.org/2001/XMLSchema"
  xmlns:xbrli="http://www.xbrl.org/2003/instance"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:xlink="http://www.w3.org/1999/xlink"
  xmlns:us-gaap="http://fasb.org/us-gaap/2015-01-31"
  xmlns:us-types="http://fasb.org/us-types/2015-01-31"
  xmlns:wm="http://www.wm.com/20160331"
  xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric"
  xmlns:num="http://www.xbrl.org/dtr/type/numeric"
  xmlns:xbrldt="http://xbrl.org/2005/xbrldt"
  xmlns:country="http://xbrl.sec.gov/country/2013-01-31"
  xmlns:currency="http://xbrl.sec.gov/currency/2014-01-31"
  xmlns:dei="http://xbrl.sec.gov/dei/2014-01-31"
  xmlns:exch="http://xbrl.sec.gov/exch/2015-01-31"
  xmlns:invest="http://xbrl.sec.gov/invest/2013-01-31"
  xmlns:naics="http://xbrl.sec.gov/naics/2011-01-31"
  xmlns:sic="http://xbrl.sec.gov/sic/2011-01-31"
  xmlns:stpr="http://xbrl.sec.gov/stpr/2011-01-31"
  targetNamespace="http://www.wm.com/20160331"
  elementFormDefault="qualified" attributeFormDefault="unqualified">
  <annotation>
    <appinfo>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/DocumentandEntityInformation" id="DocumentandEntityInformation">
        <link:definition>101 - Document - Document and Entity Information</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/StatementOfFinancialPositionClassified" id="Role_StatementOfFinancialPositionClassified">
        <link:definition>103 - Statement - Condensed Consolidated Balance Sheets</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/StatementOfFinancialPositionClassifiedParenthetical" id="Role_StatementOfFinancialPositionClassifiedParen">
        <link:definition>104 - Statement - Condensed Consolidated Balance Sheets (Parenthetical)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/StatementOfIncomeAlternative" id="Role_StatementOfIncomeAlternative">
        <link:definition>105 - Statement - Condensed Consolidated Statements of Operations (Unaudited)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/StatementOfOtherComprehensiveIncome" id="Role_StatementOfOtherComprehensiveIncome">
        <link:definition>106 - Statement - Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/StatementOfCashFlowsIndirect" id="Role_StatementOfCashFlowsIndirect">
        <link:definition>107 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/StatementOfShareholdersEquityAndOtherComprehensiveIncome" id="Role_StatementOfShareholdersEquityAndOtherComprehensiveIncome">
        <link:definition>108 - Statement - Condensed Consolidated Statement of Changes in Equity (Unaudited)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/NotesToFinancialStatementsOrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesTextBlock" id="Role_NotesToFinancialStatementsOrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesTextBlock">
        <link:definition>109 - Disclosure - Basis of Presentation</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/NotesToFinancialStatementsAssetRetirementObligationAndEnvironmentalRemediationDisclosureTextBlock" id="Role_NotesToFinancialStatementsAssetRetirementObligationAndEnvironmentalRemediationDisclosureTextBlock">
        <link:definition>110 - Disclosure - Landfill and Environmental Remediation Liabilities</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/NotesToFinancialStatementsDebtDisclosureTextBlock" id="Role_NotesToFinancialStatementsDebtDisclosureTextBlock">
        <link:definition>111 - Disclosure - Debt</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/NotesToFinancialStatementsDerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock" id="Role_NotesToFinancialStatementsDerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock">
        <link:definition>112 - Disclosure - Derivative Instruments and Hedging Activities</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/NotesToFinancialStatementsIncomeTaxDisclosureTextBlock" id="Role_NotesToFinancialStatementsIncomeTaxDisclosureTextBlock">
        <link:definition>113 - Disclosure - Income Taxes</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/NotesToFinancialStatementsEarningsPerShareTextBlock" id="Role_NotesToFinancialStatementsEarningsPerShareTextBlock">
        <link:definition>114 - Disclosure - Earnings Per Share</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/NotesToFinancialStatementsCommitmentsAndContingenciesDisclosureTextBlock" id="Role_NotesToFinancialStatementsCommitmentsAndContingenciesDisclosureTextBlock">
        <link:definition>115 - Disclosure - Commitments and Contingencies</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/NotesToFinancialStatementsSegmentReportingDisclosureTextBlock" id="Role_NotesToFinancialStatementsSegmentReportingDisclosureTextBlock">
        <link:definition>116 - Disclosure - Segment and Related Information</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/NotesToFinancialStatementsBusinessCombinationDisclosureTextBlock" id="Role_NotesToFinancialStatementsBusinessCombinationDisclosureTextBlock">
        <link:definition>117 - Disclosure - Acquisitions</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/NotesToFinancialStatementsUnusualOrInfrequentItemsDisclosureTextBlock" id="Role_NotesToFinancialStatementsUnusualOrInfrequentItemsDisclosureTextBlock">
        <link:definition>118 - Disclosure - Asset Impairments and Unusual Items</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/NotesToFinancialStatementsComprehensiveIncomeNoteTextBlock" id="Role_NotesToFinancialStatementsComprehensiveIncomeNoteTextBlock">
        <link:definition>119 - Disclosure - Accumulated Other Comprehensive Income (Loss)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/NotesToFinancialStatementsTreasuryStockTextBlock" id="Role_NotesToFinancialStatementsTreasuryStockTextBlock">
        <link:definition>120 - Disclosure - Share Repurchases</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/NotesToFinancialStatementsFairValueDisclosuresTextBlock" id="Role_NotesToFinancialStatementsFairValueDisclosuresTextBlock">
        <link:definition>121 - Disclosure - Fair Value Measurements</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/NotesToFinancialStatementsVariableInterestEntityDisclosureTextBlock" id="Role_NotesToFinancialStatementsVariableInterestEntityDisclosureTextBlock">
        <link:definition>122 - Disclosure - Variable Interest Entities</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/NotesToFinancialStatementsCondensedFinancialStatementsTextBlock" id="Role_NotesToFinancialStatementsCondensedFinancialStatementsTextBlock">
        <link:definition>123 - Disclosure - Condensed Consolidating Financial Statements</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/NotesToFinancialStatementsDescriptionOfNewAccountingPronouncementsNotYetAdopted" id="Role_NotesToFinancialStatementsDescriptionOfNewAccountingPronouncementsNotYetAdopted">
        <link:definition>124 - Disclosure - New Accounting Standards Pending Adoption</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/NotesToFinancialStatementsOrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesTextBlockPolicies" id="Role_NotesToFinancialStatementsOrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesTextBlockPolicies">
        <link:definition>125 - Disclosure - Basis of Presentation (Policies)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/NotesToFinancialStatementsAssetRetirementObligationAndEnvironmentalRemediationDisclosureTextBlockTables" id="Role_NotesToFinancialStatementsAssetRetirementObligationAndEnvironmentalRemediationDisclosureTextBlockTables">
        <link:definition>126 - Disclosure - Landfill and Environmental Remediation Liabilities (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/NotesToFinancialStatementsDebtDisclosureTextBlockTables" id="Role_NotesToFinancialStatementsDebtDisclosureTextBlockTables">
        <link:definition>127 - Disclosure - Debt (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/NotesToFinancialStatementsEarningsPerShareTextBlockTables" id="Role_NotesToFinancialStatementsEarningsPerShareTextBlockTables">
        <link:definition>128 - Disclosure - Earnings Per Share (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/NotesToFinancialStatementsSegmentReportingDisclosureTextBlockTables" id="Role_NotesToFinancialStatementsSegmentReportingDisclosureTextBlockTables">
        <link:definition>129 - Disclosure - Segment and Related Information (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/NotesToFinancialStatementsBusinessCombinationDisclosureTextBlockTables" id="Role_NotesToFinancialStatementsBusinessCombinationDisclosureTextBlockTables">
        <link:definition>130 - Disclosure - Acquisitions (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/NotesToFinancialStatementsComprehensiveIncomeNoteTextBlockTables" id="Role_NotesToFinancialStatementsComprehensiveIncomeNoteTextBlockTables">
        <link:definition>131 - Disclosure - Accumulated Other Comprehensive Income (Loss) (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/NotesToFinancialStatementsFairValueDisclosuresTextBlockTables" id="Role_NotesToFinancialStatementsFairValueDisclosuresTextBlockTables">
        <link:definition>132 - Disclosure - Fair Value Measurements (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/NotesToFinancialStatementsCondensedFinancialStatementsTextBlockTables" id="Role_NotesToFinancialStatementsCondensedFinancialStatementsTextBlockTables">
        <link:definition>133 - Disclosure - Condensed Consolidating Financial Statements (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/DisclosureBasisOfPresentationAdditionalInformation" id="DisclosureBasisOfPresentationAdditionalInformation">
        <link:definition>134 - Disclosure - Basis of Presentation - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/DisclosureLandfillAndEnvironmentalRemediationLiabilitiesLiabilitiesForLandfillAndEnvironmentalRemediationCosts" id="DisclosureLandfillAndEnvironmentalRemediationLiabilitiesLiabilitiesForLandfillAndEnvironmentalRemediationCosts">
        <link:definition>135 - Disclosure - Landfill and Environmental Remediation Liabilities - Liabilities for Landfill and Environmental Remediation Costs (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/DisclosureLandfillAndEnvironmentalRemediationLiabilitiesChangesToLandfillAndEnvironmentalRemediationLiabilities" id="DisclosureLandfillAndEnvironmentalRemediationLiabilitiesChangesToLandfillAndEnvironmentalRemediationLiabilities">
        <link:definition>136 - Disclosure - Landfill and Environmental Remediation Liabilities - Changes to Landfill and Environmental Remediation Liabilities (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/DisclosureDebtComponentsOfDebt" id="DisclosureDebtComponentsOfDebt">
        <link:definition>137 - Disclosure - Debt - Components of Debt (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/DisclosureDebtComponentsOfDebtParenthetical" id="DisclosureDebtComponentsOfDebtParenthetical">
        <link:definition>138 - Disclosure - Debt - Components of Debt (Parenthetical) (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/DisclosureDebtAdditionalInformation" id="DisclosureDebtAdditionalInformation">
        <link:definition>139 - Disclosure - Debt - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesAdditionalInformation" id="DisclosureDerivativeInstrumentsAndHedgingActivitiesAdditionalInformation">
        <link:definition>140 - Disclosure - Derivative Instruments and Hedging Activities - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/DisclosureIncomeTaxesAdditionalInformation" id="DisclosureIncomeTaxesAdditionalInformation">
        <link:definition>141 - Disclosure - Income Taxes - Additional information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/DisclosureEarningsPerShareCommonShareDataUsedForComputingBasicAndDilutedEarningsPerShare" id="DisclosureEarningsPerShareCommonShareDataUsedForComputingBasicAndDilutedEarningsPerShare">
        <link:definition>142 - Disclosure - Earnings Per Share - Common Share Data Used for Computing Basic and Diluted Earnings Per Share (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/DisclosureCommitmentsAndContingenciesAdditionalInformation" id="DisclosureCommitmentsAndContingenciesAdditionalInformation">
        <link:definition>143 - Disclosure - Commitments and Contingencies - Additional information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/DisclosureSegmentAndRelatedInformationAdditionalInformation" id="DisclosureSegmentAndRelatedInformationAdditionalInformation">
        <link:definition>144 - Disclosure - Segment and Related Information - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/DisclosureSegmentAndRelatedInformationReportableSegments" id="DisclosureSegmentAndRelatedInformationReportableSegments">
        <link:definition>145 - Disclosure - Segment and Related Information - Reportable Segments (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/DisclosureAcquisitionsAdditionalInformation" id="DisclosureAcquisitionsAdditionalInformation">
        <link:definition>146 - Disclosure - Acquisitions - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/DisclosureAcquisitionsAllocationOfPurchasePrice" id="DisclosureAcquisitionsAllocationOfPurchasePrice">
        <link:definition>147 - Disclosure - Acquisitions - Allocation of Purchase Price (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/DisclosureAcquisitionsScheduleOfFinalAndPreliminaryAllocationsOfPurchasePrice" id="DisclosureAcquisitionsScheduleOfFinalAndPreliminaryAllocationsOfPurchasePrice">
        <link:definition>148 - Disclosure - Acquisitions - Schedule of Final and Preliminary Allocations of Purchase Price (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/DisclosureAcquisitionsProFormaConsolidatedResultsOfOperations" id="DisclosureAcquisitionsProFormaConsolidatedResultsOfOperations">
        <link:definition>149 - Disclosure - Acquisitions - ProForma Consolidated Results of Operations (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/DisclosureAssetImpairmentsAndUnusualItemsAdditionalInformation" id="DisclosureAssetImpairmentsAndUnusualItemsAdditionalInformation">
        <link:definition>150 - Disclosure - Asset Impairments and Unusual Items - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfAccumulatedOtherComprehensiveIncomeLoss" id="DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfAccumulatedOtherComprehensiveIncomeLoss">
        <link:definition>151 - Disclosure - Accumulated Other Comprehensive Income (Loss) - Components of Accumulated Other Comprehensive Income (Loss) (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfAccumulatedOtherComprehensiveIncomeLossParenthetical" id="DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfAccumulatedOtherComprehensiveIncomeLossParenthetical">
        <link:definition>152 - Disclosure - Accumulated Other Comprehensive Income (Loss) - Components of Accumulated Other Comprehensive Income (Loss) (Parenthetical) (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossOtherComprehensiveIncomeLossBeforeReclassificationsAssociatedWithTheEffectivePortionOfDerivativesDesignatedAsCashFlowHedges" id="DisclosureAccumulatedOtherComprehensiveIncomeLossOtherComprehensiveIncomeLossBeforeReclassificationsAssociatedWithTheEffectivePortionOfDerivativesDesignatedAsCashFlowHedges">
        <link:definition>153 - Disclosure - Accumulated Other Comprehensive Income (Loss) - Other Comprehensive Income (Loss) Before Reclassifications Associated With the Effective Portion of Derivatives Designated as Cash Flow Hedges (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossReclassificationOfComponentOfAccumulatedOtherComprehensiveIncomeLoss" id="DisclosureAccumulatedOtherComprehensiveIncomeLossReclassificationOfComponentOfAccumulatedOtherComprehensiveIncomeLoss">
        <link:definition>154 - Disclosure - Accumulated Other Comprehensive Income (Loss) - Reclassification of Component of Accumulated Other Comprehensive Income (Loss) (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/DisclosureShareRepurchasesAdditionalInformation" id="DisclosureShareRepurchasesAdditionalInformation">
        <link:definition>155 - Disclosure - Share Repurchases - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/DisclosureFairValueMeasurementsFairValueOfAssetsAndLiabilitiesMeasuredOnRecurringBasis" id="DisclosureFairValueMeasurementsFairValueOfAssetsAndLiabilitiesMeasuredOnRecurringBasis">
        <link:definition>156 - Disclosure - Fair Value Measurements - Fair Value of Assets and Liabilities Measured on Recurring Basis (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/DisclosureFairValueMeasurementsAdditionalInformation" id="DisclosureFairValueMeasurementsAdditionalInformation">
        <link:definition>157 - Disclosure - Fair Value Measurements - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/DisclosureVariableInterestEntitiesAdditionalInformation" id="DisclosureVariableInterestEntitiesAdditionalInformation">
        <link:definition>158 - Disclosure - Variable Interest Entities - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/DisclosureCondensedConsolidatingFinancialStatementsCondensedConsolidatingBalanceSheets" id="DisclosureCondensedConsolidatingFinancialStatementsCondensedConsolidatingBalanceSheets">
        <link:definition>159 - Disclosure - Condensed Consolidating Financial Statements - Condensed Consolidating Balance Sheets (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/DisclosureCondensedConsolidatingFinancialStatementsCondensedConsolidatingStatementsOfOperations" id="DisclosureCondensedConsolidatingFinancialStatementsCondensedConsolidatingStatementsOfOperations">
        <link:definition>160 - Disclosure - Condensed Consolidating Financial Statements - Condensed Consolidating Statements of Operations (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/DisclosureCondensedConsolidatingFinancialStatementsCondensedConsolidatingStatementsOfComprehensiveIncomeLoss" id="DisclosureCondensedConsolidatingFinancialStatementsCondensedConsolidatingStatementsOfComprehensiveIncomeLoss">
        <link:definition>161 - Disclosure - Condensed Consolidating Financial Statements - Condensed Consolidating Statements of Comprehensive Income (Loss) (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.wm.com/taxonomy/role/DisclosureCondensedConsolidatingFinancialStatementsCondensedConsolidatingStatementsOfCashFlows" id="DisclosureCondensedConsolidatingFinancialStatementsCondensedConsolidatingStatementsOfCashFlows">
        <link:definition>162 - Disclosure - Condensed Consolidating Financial Statements - Condensed Consolidating Statements of Cash Flows (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:linkbaseRef xlink:type="simple" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:href="wm-20160331_cal.xml" xlink:title="Calculation Links, all"/>
      <link:linkbaseRef xlink:type="simple" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:href="wm-20160331_def.xml" xlink:title="Definition Links, all"/>
      <link:linkbaseRef xlink:type="simple" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:href="wm-20160331_lab.xml" xlink:title="Label Links, all"/>
      <link:linkbaseRef xlink:type="simple" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:href="wm-20160331_pre.xml" xlink:title="Presentation Links, all"/>
    </appinfo>
  </annotation>
  <import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
  <import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/>
  <import namespace="http://fasb.org/us-types/2015-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2015/elts/us-types-2015-01-31.xsd"/>
  <import namespace="http://www.xbrl.org/dtr/type/non-numeric" schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd"/>
  <import namespace="http://www.xbrl.org/dtr/type/numeric" schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd"/>
  <import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd"/>
  <import namespace="http://fasb.org/us-gaap/2015-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd"/>
  <import namespace="http://xbrl.sec.gov/country/2013-01-31" schemaLocation="http://xbrl.sec.gov/country/2013/country-2013-01-31.xsd"/>
  <import namespace="http://xbrl.sec.gov/currency/2014-01-31" schemaLocation="http://xbrl.sec.gov/currency/2014/currency-2014-01-31.xsd"/>
  <import namespace="http://xbrl.sec.gov/dei/2014-01-31" schemaLocation="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd"/>
  <import namespace="http://xbrl.sec.gov/exch/2015-01-31" schemaLocation="http://xbrl.sec.gov/exch/2015/exch-2015-01-31.xsd"/>
  <import namespace="http://xbrl.sec.gov/invest/2013-01-31" schemaLocation="http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd"/>
  <import namespace="http://xbrl.sec.gov/naics/2011-01-31" schemaLocation="http://xbrl.sec.gov/naics/2011/naics-2011-01-31.xsd"/>
  <import namespace="http://xbrl.sec.gov/sic/2011-01-31" schemaLocation="http://xbrl.sec.gov/sic/2011/sic-2011-01-31.xsd"/>
  <import namespace="http://xbrl.sec.gov/stpr/2011-01-31" schemaLocation="http://xbrl.sec.gov/stpr/2011/stpr-2011-01-31.xsd"/>
  <element name="AcceleratedShareRepurchaseAgreementMember" id="wm_AcceleratedShareRepurchaseAgreementMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="AccountingStandardsUpdate201503Member" id="wm_AccountingStandardsUpdate201503Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="AccretionExpenseAndDiscountRateAdjustmentsToEnvironmentalRemediationLiabilitiesAndRecoveryAssets" id="wm_AccretionExpenseAndDiscountRateAdjustmentsToEnvironmentalRemediationLiabilitiesAndRecoveryAssets" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="AccrualForEnvironmentalLossContingenciesIncreaseDecreaseForAcquisitionsDivestituresAndOtherAdjustments" id="wm_AccrualForEnvironmentalLossContingenciesIncreaseDecreaseForAcquisitionsDivestituresAndOtherAdjustments" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="AccruedCappingClosurePostClosureAndEnvironmentalCostsNet" id="wm_AccruedCappingClosurePostClosureAndEnvironmentalCostsNet" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="AssetRetirementObligationAndEnvironmentalRemediationDisclosureTextBlock" id="wm_AssetRetirementObligationAndEnvironmentalRemediationDisclosureTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="AssetRetirementObligationAndEnvironmentalRemediationRollforwardAnalysisTableTextBlock" id="wm_AssetRetirementObligationAndEnvironmentalRemediationRollforwardAnalysisTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="AssetRetirementObligationIncreaseDecreaseForAcquisitionsDivestituresAndOtherAdjustments" id="wm_AssetRetirementObligationIncreaseDecreaseForAcquisitionsDivestituresAndOtherAdjustments" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="BasisOfPresentationLineItems" id="wm_BasisOfPresentationLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="BasisOfPresentationTable" id="wm_BasisOfPresentationTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAccountsAndOtherReceivables" id="wm_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAccountsAndOtherReceivables" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLandfillAndEnvironmentalRemediationLiabilities" id="wm_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLandfillAndEnvironmentalRemediationLiabilities" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPartsAndSupplies" id="wm_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPartsAndSupplies" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CanadianCreditFacilityAndTermLoanMember" id="wm_CanadianCreditFacilityAndTermLoanMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CanadianCreditFacilityMember" id="wm_CanadianCreditFacilityMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CanadianTermLoanMember" id="wm_CanadianTermLoanMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CapitalLeasesAndOtherMember" id="wm_CapitalLeasesAndOtherMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CarryingValueOfTrustsForWhichCompanyIsNotTheSoleBeneficiary" id="wm_CarryingValueOfTrustsForWhichCompanyIsNotTheSoleBeneficiary" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ChangeInIntercompanyAndInvestmentsNet" id="wm_ChangeInIntercompanyAndInvestmentsNet" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CommitmentsAndContingenciesLineItems" id="wm_CommitmentsAndContingenciesLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CommitmentsAndContingenciesTable" id="wm_CommitmentsAndContingenciesTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="CurrentAssetsExcludingCashAndCashEquivalents" id="wm_CurrentAssetsExcludingCashAndCashEquivalents" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CurrentLiabilitiesExcludingCurrentPortionOfLongTermDebt" id="wm_CurrentLiabilitiesExcludingCurrentPortionOfLongTermDebt" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DebtAndCapitalLeasesMaturingWithinNextTwelveMonths" id="wm_DebtAndCapitalLeasesMaturingWithinNextTwelveMonths" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DebtInstrumentFairValueCarryingValueAbstract" id="wm_DebtInstrumentFairValueCarryingValueAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DebtMaturingWithinNextTwelveMonthsClassifiedAsLongTerm" id="wm_DebtMaturingWithinNextTwelveMonthsClassifiedAsLongTerm" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DebtMaturingWithinTwelveMonthsClassifiedAsLongTerm" id="wm_DebtMaturingWithinTwelveMonthsClassifiedAsLongTerm" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DeffenbaughDisposalIncAndSouthernWasteSystemsMember" id="wm_DeffenbaughDisposalIncAndSouthernWasteSystemsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DeffenbaughDisposalIncMember" id="wm_DeffenbaughDisposalIncMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DisclosureRequiredUnderItemOneZeroThreeOfSecsRegulationSk" id="wm_DisclosureRequiredUnderItemOneZeroThreeOfSecsRegulationSk" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DocumentAndEntityInformationAbstract" id="wm_DocumentAndEntityInformationAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="EnvironmentalCostsMember" id="wm_EnvironmentalCostsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="EnvironmentalRemediationReasonablyPossibleAdditionalLossesHighEstimate" id="wm_EnvironmentalRemediationReasonablyPossibleAdditionalLossesHighEstimate" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="EquityBasedCompensationTransactionsIncludingDividendEquivalentsNetOfTaxes" id="wm_EquityBasedCompensationTransactionsIncludingDividendEquivalentsNetOfTaxes" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="EquityInNetIncomeLossesOfUnconsolidatedEntitiesAndOtherNet" id="wm_EquityInNetIncomeLossesOfUnconsolidatedEntitiesAndOtherNet" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="EquityMethodInvestmentNonCashComponent" id="wm_EquityMethodInvestmentNonCashComponent" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="FairValueHedgesAdjustmentsToCarryingValueOfHedgedItems" id="wm_FairValueHedgesAdjustmentsToCarryingValueOfHedgedItems" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ForwardStartingInterestRateSwapMember" id="wm_ForwardStartingInterestRateSwapMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncomeExpenseFromDivestituresAssetImpairmentsAndUnusualItems" id="wm_IncomeExpenseFromDivestituresAssetImpairmentsAndUnusualItems" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncomeExpenseFromDivestituresAssetImpairmentsAndUnusualItemsLineItems" id="wm_IncomeExpenseFromDivestituresAssetImpairmentsAndUnusualItemsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncomeExpenseFromDivestituresAssetImpairmentsAndUnusualItemsTable" id="wm_IncomeExpenseFromDivestituresAssetImpairmentsAndUnusualItemsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="IncomeExpenseFromDivestituresAssetImpairmentsExcludingGoodwillAndUnusualItemsNonCashPortion" id="wm_IncomeExpenseFromDivestituresAssetImpairmentsExcludingGoodwillAndUnusualItemsNonCashPortion" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncomeTaxBenefitIncludingFederalTaxCreditsFromEquityMethodInvestment" id="wm_IncomeTaxBenefitIncludingFederalTaxCreditsFromEquityMethodInvestment" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncomeTaxesLineItems" id="wm_IncomeTaxesLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncomeTaxesTable" id="wm_IncomeTaxesTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="IncreaseDecreaseInDeferredRevenueAndOtherOperatingLiabilities" id="wm_IncreaseDecreaseInDeferredRevenueAndOtherOperatingLiabilities" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IntercompanyDebtMember" id="wm_IntercompanyDebtMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="InterestAndOtherIncomeExpense" id="wm_InterestAndOtherIncomeExpense" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="InvestmentInLowIncomeHousingPropertiesMember" id="wm_InvestmentInLowIncomeHousingPropertiesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="InvestmentInRefinedCoalFacilityMember" id="wm_InvestmentInRefinedCoalFacilityMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="InvestmentsInAndAdvancesToAffiliates" id="wm_InvestmentsInAndAdvancesToAffiliates" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LongTermAssetsExcludingPropertyPlantAndEquipmentAndInvestmentsInAndAdvancesToAffiliates" id="wm_LongTermAssetsExcludingPropertyPlantAndEquipmentAndInvestmentsInAndAdvancesToAffiliates" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LongTermLiabilitiesExcludingLongTermDebt" id="wm_LongTermLiabilitiesExcludingLongTermDebt" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MaximumNumberOfLifeExpectedForIrsAuditsToBeCompleted" id="wm_MaximumNumberOfLifeExpectedForIrsAuditsToBeCompleted" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NetReceiptsFromRestrictedTrustAndEscrowAccountAndOtherNet" id="wm_NetReceiptsFromRestrictedTrustAndEscrowAccountAndOtherNet" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NonRevolvingTermCreditFacilityMember" id="wm_NonRevolvingTermCreditFacilityMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfAcceleratedShareRepurchaseAgreementCompleted" id="wm_NumberOfAcceleratedShareRepurchaseAgreementCompleted" type="xbrli:integerItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfHomeownersPropertiesAdjacentToOrNearCertainOfOurLandfillsWithAgreementsGuaranteeingMarketValue" id="wm_NumberOfHomeownersPropertiesAdjacentToOrNearCertainOfOurLandfillsWithAgreementsGuaranteeingMarketValue" type="xbrli:integerItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfLandfillsAdjacentToOrNearHomeownersPropertiesWithAgreementsGuaranteeingMarketValue" id="wm_NumberOfLandfillsAdjacentToOrNearHomeownersPropertiesWithAgreementsGuaranteeingMarketValue" type="xbrli:integerItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfNonOwnedSitesListedOnEnvironmentalProtectionAgencyNationalPrioritiesListForWhichWeHaveBeenNotifiedWeArePrp" id="wm_NumberOfNonOwnedSitesListedOnEnvironmentalProtectionAgencyNationalPrioritiesListForWhichWeHaveBeenNotifiedWeArePrp" type="xbrli:integerItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfOwnedSitesListedOnEnvironmentalProtectionAgencyNationalPrioritiesListForWhichWeHaveBeenNotifiedWeArePrp" id="wm_NumberOfOwnedSitesListedOnEnvironmentalProtectionAgencyNationalPrioritiesListForWhichWeHaveBeenNotifiedWeArePrp" type="xbrli:integerItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfSitesListedOnEnvironmentalProtectionAgencyNationalPrioritiesListForWhichWeHaveBeenNotifiedWeArePrp" id="wm_NumberOfSitesListedOnEnvironmentalProtectionAgencyNationalPrioritiesListForWhichWeHaveBeenNotifiedWeArePrp" type="xbrli:integerItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OperatingGroupMember" id="wm_OperatingGroupMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PotentiallyIssuableShares" id="wm_PotentiallyIssuableShares" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PrincipalMember" id="wm_PrincipalMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ProceedsFromDivestitureOfBusinessesNetOfCashDivestedAndProceedsFromSalesOfAssetsInvestingActivities" id="wm_ProceedsFromDivestitureOfBusinessesNetOfCashDivestedAndProceedsFromSalesOfAssetsInvestingActivities" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ProceedsFromPaymentsForOtherFinancingActivitiesIncludingExcessTaxBenefitFromShareBasedCompensationFinancingActivities" id="wm_ProceedsFromPaymentsForOtherFinancingActivitiesIncludingExcessTaxBenefitFromShareBasedCompensationFinancingActivities" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SeniorNoteMaturityYear" id="wm_SeniorNoteMaturityYear" type="xbrli:gYearItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SixPointOnePercentSeniorNotesDueTwoThousandEighteenMember" id="wm_SixPointOnePercentSeniorNotesDueTwoThousandEighteenMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SolidWasteOperationsMember" id="wm_SolidWasteOperationsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SouthernWasteSystemsMember" id="wm_SouthernWasteSystemsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="StockholdersEquityExcludingPortionAttributableToSubsidiariesNoncontrollingInterestAbstract" id="wm_StockholdersEquityExcludingPortionAttributableToSubsidiariesNoncontrollingInterestAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TaxExemptBondsSubjectToRepricingWithinNextTwelveMonths" id="wm_TaxExemptBondsSubjectToRepricingWithinNextTwelveMonths" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TaxYearTwoThousandAndSixteenMember" id="wm_TaxYearTwoThousandAndSixteenMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TierOneMember" id="wm_TierOneMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TierThreeMember" id="wm_TierThreeMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TierTwoMember" id="wm_TierTwoMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TreasuryRateLocksMember" id="wm_TreasuryRateLocksMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TrustForFinalCappingClosurePostClosureOrEnvironmentalRemediationObligationsMember" id="wm_TrustForFinalCappingClosurePostClosureOrEnvironmentalRemediationObligationsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TwoPointSixPercentSeniorNotesDueSeptemberTwoThousandSixteenMember" id="wm_TwoPointSixPercentSeniorNotesDueSeptemberTwoThousandSixteenMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TwoThousandSixteenCanadianCreditAgreementMember" id="wm_TwoThousandSixteenCanadianCreditAgreementMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="VariableRateMember" id="wm_VariableRateMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="WesternCanadaAreaMember" id="wm_WesternCanadaAreaMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="WheelabratorMember" id="wm_WheelabratorMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
</schema>
