Waste Services, Inc. to Release 2Q Results on July 24

Date: July 5, 2007

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 2007 second quarter results after the close of markets on Tuesday, July 24, 2007 and hold a conference call on Wednesday, July 25, 2007 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 in this call, please phone 888-680-0878 (US and Canada) or 617-213-4855 (International) and enter passcode number 72382647. 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 8, 2007 by phoning 888-286-8010 (US and Canada) or 617-801-6888 (International) and entering passcode number 56075559. 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

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