Numerous pesticides were monitored in surface waters in agricultural areas. Atrazine, alachlor, metolachlor, cyanazine, metribuzin, carbofuran, linuron, and simazine were found in the influent to three water treatment plants in storm runoff following their application. Studies at these plants, together with bench-scale studies, demonstrated poor control by conventional treatment processes. The relatively high adsorption capacities of these agrichemicals indicate that Granular Activated Carbon (GAC) can be cost-effective for their control. Powered Activated Carbon (PAC) applied at taste-and-odor control doses can also be effective if moderate percent removal is required.