Calgon Carbon said today it has won a $14.3 million contract to provide granular activated carbon for two drinking water treatment plans in Phoenix.

The carbon will be used to prevent potentially harmful compounds from forming when chlorine is used to disinfect drinking water. The treatment is required by a 2006 U.S. Environmental Protection Agency regulation.

The Robinson company expects the regulation will require the installation of more than 600 activated carbon systems nationwide. Calgon Carbon previously won a $7.1 million contract from Palmdale, Calif., and a $2.3 million contract from Scottsdale, Ariz., for similar work.

Shortly before noon, shares of Calgon Carbon were trading at $14.88, up 38 cents. They are off 3 percent this year.

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