Exhibit No. 15



November 12, 1997


Securities and Exchange Commission
450 Fifth Street, N.W.
Washington, D.C.  20549

Dear Ladies and Gentlemen:

We are aware that Calgon Carbon Corporation has included our report dated
November 12, 1997 (issued pursuant to the provisions of Statement on Auditing
Standards No. 71) in the Prospectuses constituting part of its Registration
Statements on Forms S-8 (No. 33-34019 and No. 333-01019).  We are also aware of
our responsibilities under the Securities Act of 1933.

Yours very truly,



Price Waterhouse LLP