Press Release

Calgon Carbon Updates Third Quarter Earnings Preview

PITTSBURGH, PA  –  10/17/2002

Calgon Carbon Corporation (NYSE: CCC) announced today that earnings for the third quarter will be approximately $0.01 per share versus $0.04 for the comparable quarter last year. Results for the third quarter will be negatively impacted by approximately $1.7 million related to start-up problems with a major Engineered Solutions customer installation.

Calgon Carbon Corporation, headquartered in Pittsburgh, Pennsylvania, is a global leader in services and solutions for making air and water cleaner and safer. The company employs approximately 1,000 people at 13 operating facilities and 11 sales and service centers worldwide.

The Private Securities Litigation Reform Act of 1995 provides a “safe harbor” for forward-looking statements. This document contains certain statements that are forward-looking relative to the company’s future strategy and performance. 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.

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For more information, please contact Gail Gerono (412) 787-6795