Calgon Carbon's Blue Lake, California Plant First To Be Certified By NSF International For Custom Reactivation

PITTSBURGH, PA — June 21, 2010 — Calgon Carbon Corporation (NYSE: CCC) announced today that it's Blue Lake, California plant is the first in the U.S. to receive certification from NSF International under NSF/ANSI Standard 61:, Drinking Water System Components — Health Effects for custom reactivated carbon for potable water applications. NSF International is an independent, not-for-profit organization committed to protecting and improving public health and the environment.

Spent municipal potable carbon reactivated at the Blue Lake plant will now be certified per NSF/ANSI Standard 61. NSF/ANSI Standard 61 is the nationally recognized measure to evaluate the health effects for components and materials which contact drinking water.

NSF has developed more than 50 voluntary American National Standards under the scope of public health and safety. Its process ensures balanced input from industry representatives, public health and regulatory officials and users and consumers.

Reactivation is a high-temperature thermal process, whereby spent granular activated carbon can be safely and cost effectively recycled back to customer facilities for re-use. During the reactivation process adsorbed organic compounds are destroyed, and the activated carbon's adsorptive capacity is restored. This results in a cost savings over the use of virgin carbon. Reactivation/recycling is also better for the environment, significantly reducing the CO2 footprint associated with the production, supply and use of virgin activated carbon.

Commenting on the announcement, Robert P. O'Brien, Calgon Carbon's executive vice president said, "Achieving NSF Certification for the reactivation of municipal potable water carbon is a significant milestone. It enables us to provide a cost effective solution to the problems that our municipal clients have in controlling tastes and odors and disinfection byproducts." />