Onsite Wastewater Treatment Systems
The Department of Planning & Building provides review and permitting of Onsite Wastewater Treatment Systems in unincorporated areas of the county. In pages linked below, the Department provides information for builders and owners on septic system design, permitting, operation, and maintenance.
The Local Agency Management Program (LAMP) develops minimum standards for the treatment and disposal of sewage through onsite wastewater treatment systems. The LAMP is the culmination of the actions required by Assembly Bill 885 and the State Water Resources Control Board to develop regulations and standards for onsite wastewater treatment systems. The County of San Luis Obispo LAMP is designed to protect surface water and groundwater from contamination while providing flexibility in design criteria in consideration of local conditions.
The Department of Planning & Building encourages property owners to regularly maintain their onsite wastewater treatment systems for optimal functioning. The Department provides forms for reporting the condition of systems and verifying system capacity for building expansions. This page also includes educational information and quick tips on the proper use of onsite wastewater treatment systems.
Our interactive Land Use View mapping application can be used to look up property information by assessor parcel number (APN) or address.
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