The Office of Environmental Health Hazard Assessment (OEHHA) is requested by the Calderon-Sher California Safe Drinking Water Act of 1996 to post a notice on its website when initiating the development or update of public health goals (PHGs) for contaminants in drinking water. Its aim is to regulate the concentration of PHGS in drinking water.


PHGs are concentrations of chemicals in drinking water that are not anticipated to produce adverse health effects.  PHGs are non-regulatory in nature but are to be used as the health basis to support California’s primary drinking water standards (Maximum Contaminant Levels, or MCLs: established by the State Water Resources Control Board (SWRCB) for chemicals subject to regulation.

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