Yes. Potable reuse is regulated using the same rigorous state and federal standards as all other drinking water sources. With advanced water purification, water is treated to a level that exceeds current drinking water standards and is monitored extensively to ensure public health and safety.
In California, the permits for the use of potable reuse are granted by the State Water Resources Control Board (SWRCB) and its nine Regional Water Quality Control Boards (RWQCB). The Division of Drinking Water within the SWRCB sets and oversees the regulations for Drinking Water. These regulations are among the most stringent in the world.