Press Release

Calgon Carbon to Provide Ultraviolet Disinfection to the City of Cincinnati, Ohio

PITTSBURGH, PA  –  06/28/2010

Calgon Carbon Corporation (NYSE: CCC) announced today that it has been awarded a contract by the City of Cincinnati, Ohio, to provide an ultraviolet (UV) disinfection system for the Richard Miller Water Treatment Plant UV Disinfection Facility. The value of the contract is $2.4 million.

Eight Sentinel® 48″ Chevron reactors (Chevron 48) are scheduled to be delivered in late 2011 and will treat up to 240 million gallons of drinking water per day. Two additional Sentinel Chevron 48 reactors have been included in plans to allow for future growth. The Chevron 48, which is Calgon Carbon’s highest flow unit in its Sentinel product line, can disinfect up to 50 million gallons of drinking water per day.

Commenting on this announcement, James A. Sullivan, Calgon Carbon’s vice president Americas operations said, “We are pleased that our Sentinel design was selected to meet the City of Cincinnati’s disinfection and compliance needs. The continued success of the Chevron 48 strengthens our position in the growing, global drinking water disinfection market.”

For more information about Calgon Carbon’s leading activated carbon and ultraviolet technology solutions for municipalities and industries, visit dev.calgoncarbon.com.

Calgon Carbon Corporation, headquartered in Pittsburgh, Pennsylvania, is a global leader in services and solutions for making water and air safer and cleaner.

This news release contains historical information and forward-looking statements. Forward-looking statements typically contain words such as “expect,” “believe,” “estimate,” “anticipate,” or similar words indicating that future outcomes are uncertain. Statements looking forward in time, including statements regarding future growth and profitability, price increases, cost savings, broader product lines, enhanced competitive posture and acquisitions, are included in the company’s most recent Annual Report pursuant to the “safe harbor” provision of the Private Securities Litigation Reform Act of 1995. They involve known and unknown risks and uncertainties that may cause the company’s actual results in future periods to be materially different from any future performance suggested herein. Further, the company operates in an industry sector where securities values may be volatile and may be influenced by economic and other factors beyond the company’s control. Some of the factors that could affect future performance of the company are higher energy and raw material costs, costs of imports and related tariffs, labor relations, capital and environmental requirements, changes in foreign currency exchange rates, borrowing restrictions, validity of patents and other intellectual property, and pension costs. In the context of the forward-looking information provided in this news release, please refer to the discussions of risk factors and other information detailed in, as well as the other information contained in the company’s most recent Annual Report.