Rather than adopting its own Local Area Management Program (LAMP), the City of Yorba Linda complies with the State Water Resources Control Board requirements for all new septic systems, repairs, and replacements. Per the State Water Resource Control Board, a septic system shall be defined as an Onsite Wastewater Treatment System (OWTS).
The local branch of the State Water Resources Control Board, the Santa Ana Regional Water Quality Control Board, can be contacted for additional information. They have also provided answers to frequently asked questions about requirements related to OWTSs, which are listed below.
State of California Santa Ana Regional Water Quality Control Board