Who regulates the use of graywater in Sonoma County?
The County of Sonoma Permit and Resource Management Department (PRMD) has been delegated the authority to regulate graywater systems in the unincorporated area of Sonoma County by the California Regional Water Quality Control Board (RWQCB). PRMD does not regulate graywater systems in the incorporated cities in Sonoma County. These cities can implement a program of their own that meets or exceeds the requirements of the CPC with approval from the RWQCB. Questions regarding graywater systems within an incorporated city should be go directly to that city.