MCL: 0.060 ppm
Source: Water Treatment disinfection byproducts.
Summary: HAA5 denotes the five haloacetic acids commonly found in drinking water as a byproduct of water treatment. They form during the chlorination and chlorimation disinfection process. The five haloacetic acids are monochloroacetic acid, dichloroacetic acid, trichloroacetic acid, monobromoacetic acid, and dibromoacetic acid, and together they are monitored as a sum that may not exceed 0.060 mg/L.