Press Release

Calgon Carbon Conducts Water Treatment Seminar For U.S. Senate Committee

PITTSBURGH, PA  –  06/24/2011

Calgon Carbon Corporation (NYSE: CCC) conducted a technical information seminar today for the U.S. Senate Environment and Public Works Committee. The seminar was presented to professional staff members of the Committee and addressed the availability of a variety of drinking water and wastewater technologies.

Members of Calgon Carbon’s staff presented technical and cost information to the Committee’s professional staff related to the use of and applications for activated carbon, UV light disinfection, ion exchange technology systems, and a wide variety of other biological and physical water treatment technologies.

The Senate Environment and Public Works Committee has jurisdiction on matters related to air pollution; construction and maintenance of highways; environmental aspects of Outer Continental Shelf lands; environmental effects of toxic substances, other than pesticides; environmental policy; environmental research and development; fisheries and wildlife; flood control and improvements of rivers and harbors, including environmental aspects of deepwater ports; noise pollution; nonmilitary environmental regulation and control of nuclear energy; ocean dumping; public buildings and improved grounds of the United States generally, including federal buildings in the District of Columbia; public works, bridges, and dams; regional economic development; solid waste disposal and recycling; water pollution; and water resources. In addition, the Committee also conducts studies and reviews, on a comprehensive basis, on matters relating to environmental protection and resource utilization and conservation, and reports thereon from time to time.

In commenting on the seminar, John Stanik, president and chief executive officer of Calgon Carbon, said, “We are pleased to have this opportunity to present technical and cost information based on our real life experiences to the professional staff of the Senate’s Environment and Public Works Committee. We would like decision makers to have factual and relevant technical and cost information, and we look forward to the on-going opportunity to contribute our experience and perspective to that end.”

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

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

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, availability of capital and environmental requirements as they relate both to our operations and to our customers, 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.