Calgon Carbon’s Ultraviolet Technologies Division Receives Conditional Acceptance From California Department Of Public Health For C3500 UV Disinfection System

Calgon Carbon Corporation’s (NYSE: CCC) Ultraviolet (UV) Technologies Division announced that it received conditional acceptance of its C 3500 (now the C 3500D), a wastewater disinfection system that utilizes ultraviolet light, from the California Department of Public Health (CDPH). The conditional acceptance permits the sale of Calgon Carbon's UV equipment into states where the majority of water reuse activity is expected to occur.

The CDPH Drinking Water Program’s Water Recycling Committee (WRC) found that the Calgon Carbon C 3500D UV disinfection system meets the coliform and virus disinfection criteria found in Title 22 of the California Code of Regulations (CCR) for recycled waters that have received treatment through a tertiary filtration process accepted by CDPH.

The C 3500D utilizes calibrated germicidal UV sensors to monitor the performance of the system and control the power output to the UV lamps. These sensors ensure the required dose is continuously applied while reducing the operation and maintenance costs of the C 3500D. Calgon Carbon is only one of two manufacturers of open-channel UV systems that utilize this cost savings approach.

The WRC reviewed the “Calgon Carbon C 3500D Wastewater UV Reactor Validation Report” (Carollo Engineers, January 2010), which contains the bioassay results of testing in Stockton, California. The results were analyzed in accordance with the 2003 Ultraviolet Disinfection Guidelines for Drinking Water and Water Reuse published by the National Water Research Institute/AWWA Research Foundation (NWRI).

Recycled waters meeting these stringent microbiological standards can be used for the irrigation of crops and golf courses, recreational waters, and other non-potable applications. Disinfection with UV light is an important part of the treatment process.

Water scarcity and demand are driving growth of the water reuse market. This conditional acceptance opens the California market to the C 3500 and also to states that look to the CDPH regarding technology approvals, including Washington, Oregon, Arizona, Nevada, Florida, and Hawaii.

In commenting, James A. Sullivan, Calgon Carbon's vice president, Americas said, “Gaining the California Department of Public Health’s conditional acceptance expands the market for the C 3500D and exemplifies Calgon Carbon’s commitment to quality and customer satisfaction in the design, manufacture, and distribution of UV water and wastewater treatment systems.”

Calgon Carbon’s UV Technologies Division is known for its leading edge application of UV disinfection and UV oxidation technologies for drinking water, wastewater, groundwater, and water reuse. The company developed an economical process using UV to inactivate Cryptosporidium and similar pathogens in surface water, rendering them harmless to humans. The Division also introduced one of the first advanced UV oxidation processes to remediate contaminated groundwater and it currently has over 300 UV oxidation installations worldwide.

For more information about Calgon Carbon's leading activated carbon and ultraviolet technology solutions for municipalities and industries, visit www.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, 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.

Copyright Business Wire 2010

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