Waste Services Announces Date for First Quarter Conference Call

Date: April 3, 2006

Source: Waste Services, Inc.

Waste Services, Inc. (Nasdaq: WSII) will release its 2006 first quarter results after the close of markets on Tuesday, April 25, 2006 and hold a conference call on Wednesday, April 26, 2006 at 8:30 a.m. (EDT). A copy of the first 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 first quarter results.

If you wish to participate in this call, please phone 866-543-6405 (US and Canada) or 617-213-8897 (International) and enter passcode number 68308931. 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 Wednesday, May 10, 2006 by phoning 888-286-8010 (US and Canada) or 617-801-6888 (International) and entering passcode number 64568660. The web cast will also be available on the company's website.

Waste Services, Inc. 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 website is located at www.wasteservicesinc.com. Information on the company's website does not form part of this press release.

For more information, contact:
Mark A. Pytosh
Executive Vice President and Chief Financial Officer
Waste Services, Inc.
561-237-3400

More information: www.wasteservicesinc.com.

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