Waste Industries USA Declares 12 Cent Quarterly Cash Dividend

Date: May 18, 2007

Source: Waste Industries USA, Inc.

Waste Industries USA, Inc. (Nasdaq: WWIN), a regional, non-hazardous solid waste services
company, today announced that its Board of Directors declared a quarterly cash dividend. The quarterly dividend of $0.12 per share is payable June 22, 2007 to shareholders of record at the close of business on June 8, 2007.

Waste Industries USA, Inc. is a vertically integrated solid waste services company that provides collection, transfer, disposal and recycling services to commercial, industrial and residential customer locations in the states of North Carolina, South Carolina, Virginia, Tennessee,
Mississippi and Georgia.

For more information, visit: www.waste-ind.com.

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