Waste Services, Inc. to Announce Third Quarter on October 30

Date: October 10, 2007

Source: Waste Services, Inc.

News ReleaseWaste Services Announces Conference Call for Third Quarter Results

Waste Services, Inc. (Nasdaq: WSII) today announced that it will release its 2007 third quarter results after the close of markets on Tuesday, October 30, 2007 and hold a conference call on Wednesday, October 31, 2007 at 8:30 a.m. (ET). A copy of the third 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 third quarter results.

If you wish to participate in this call, please phone 866-761-0749 (US and Canada) or 617-614-2707 (International) and enter passcode number 49978114. 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 November 14, 2007 by phoning 888-286-8010 (US and Canada) or 617-801-6888 (International) and entering passcode number 97716015. 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.

SOURCE Waste Services, Inc.

CONTACT: Edwin D. Johnson, Executive Vice President and Chief Financial
Officer of Waste Services, Inc., +1-561-237-3400

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