The land use program works to ensure that adequate potable water supplies and proper sewage disposal facilities are provided where public water and public sewer service are not available.
Septic tank systems are the alternative to sanitary sewers. The land use program performs site surveys to determine the feasibility for septic tank systems, specifies the conditions for installation, conducts installation inspections to ensure conformance to local codes and good practice, issues permits for new septic systems and repairs to existing systems, and maintains location records.
The County of Santa Clara adopted a new ordinance on December 26, 2013 that updates and replaces the previous County regulations governing individual on-site wastewater treatment systems (OWTS) within the unincorporated part of the County. The modifications allow for a broader range of treatment and dispersal designs (alternative systems that use pre-treatment technologies), and eliminates the 1-acre minimum lot size requirement for installation of OWTS in the Lexington Basin. The project also includes changes to a County General Plan policy and supporting descriptive text that reference use of alternative OWTS as well as a change to the Zoning Ordinance eliminating the minimum lot size requirement for secondary dwelling units in the San Martin Planning Area. All landuse projects submitted on or after December 26, 2013 will be reviewed using the new ordinance.