Waste Services to Release Second Quarter on July 22

Date: July 10, 2008

Source: Waste Services, Inc.

Waste Services Announces Conference Call for Second Quarter Results

Waste Services, Inc. (Nasdaq: WSII) today announced that it will release its 2008 second quarter results after the close of markets on Tuesday, July 22, 2008 and hold a conference call on Wednesday, July 23, 2008 at 8:30 a.m. (ET). A copy of the second 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 second quarter results.

If you wish to participate on this call, please phone 800-706-7745 (US and Canada) or 617-614-3472 (International) and enter passcode number 64636817. 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 replay of the call will be available until August 6, 2008 by phoning 888-286-8010 (US and Canada) or 617-801-6888 (International) and entering passcode number 94291561. 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:
Edwin D. Johnson
Executive Vice President and Chief Financial Officer
Waste Services, Inc.
561-237-3400; or

J. Todd Atenhan
Investor Relations
888-917-5105; or

Visit: www.wasteservicesinc.com.

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