The State Water Resources Control Board – Division of Drinking Water decided to lower its response level guidelines for two chemicals found in low concentrations in drinking water across the state, according to SCV Water.

On Feb. 6, Division of Drinking Water lowered its response levels to 10 parts per trillion for perfluorooctanoic acid and 40 parts per trillion for perfluorooctanesulfonic acid, two chemicals in a family of per- and polyfluoroalkyl substance.