Waste Services to Announce 4Q and Year-End on Feb. 28

Date: February 15, 2007

Source: Waste Services, Inc.

Waste Services Announces Conference Call for Fourth Quarter and 2006 Results

Waste Services, Inc. (Nasdaq: WSII) today announced that it will release its 2006 fourth quarter results after the close of markets on Wednesday, February 28, 2007 and hold a conference call on Thursday, March 1, 2007 at 8:30 a.m. (EST). A copy of the fourth quarter press release will be available on our website after its release. Our Chief Executive Officer, David Sutherland-Yoest, accompanied by other senior management, will discuss the company's fourth quarter and 2006 results.

If you wish to participate in this call, please phone 800-561-2813 (US and Canada) or 617-614-3529 (International) and enter passcode number 28315061. To hear a web cast of the call over the Internet, access the home page of the Waste Services website at www.wasteservicesinc.com. A post-view of the call will be available until March 15, 2007 by phoning 888-286-8010 (US and Canada) or 617-801-6888 (International) and entering passcode number 35194409. The web cast will also be available on the company's website.

Waste Services, Inc., a Delaware corporation, is a multi-regional integrated solid waste services company that provides collection, transfer, disposal and recycling services in the United States and Canada. The company's web site is www.wasteservicesinc.com. Information on the company's web site does not form part of this press release.

For more information, contact:
Ivan R. Cairns
Executive Vice President and General Counsel
Waste Services, Inc.

Sign up to receive our free Weekly News Bulletin