HOUSTON--(BUSINESS WIRE)--Jan. 11, 2005--Waste Management Inc. (NYSE:WMI), announced today that it will host an Investor and Analyst Day on Thursday, February 10, 2005 in New York City. Management presentations will begin at 10:00 AM Eastern Time. A live webcast of the meeting and accompanying presentations will be available on the company's website at http://www.wm.com (Investor Relations section). A replay of the webcast will be archived on the website until February 24, 2005.

Waste Management Inc. is its industry's leading provider of comprehensive waste management services. Based in Houston, the Company serves municipal, commercial, industrial and residential customers throughout North America.

    CONTACT: Waste Management Inc., Houston
             Analysts:
             Greg Nikkel, 713-265-1358
             or
             Media:
             Heather Browne, 713-265-1514

    SOURCE: Waste Management Inc.