Effective January 1, 2012, AB54 State law imposed new requirements on mutual water companies (MWCs) that own and operate public water systems and required greater coordination between them and the Local Agency Formation Commission (LAFCo). The requirement intends to improve access to information about the location of the MWCs and the quality of the water they provide. San Mateo County LAFCo has identified 10 MWCs that meet the requirement for reporting to LAFCo certain information regarding their service area boundaries. Links to maps of the mutual water companies listed below will be updated as the maps become available. For more information about MWCs visit: https://calmutuals.org/.
- Butano Canyon Mutual Water Company
- Cordilleras Mutual Water Company
- King's Mountain Park Water Company
- La Honda Vista Mutual Water Company
- Loma Mar Mutual Water and Improvement Company
- O'Connor Tract Mutual (Co-operative) Water Company
- Palo Alto Park Mutal Water Company
- Portola Improvement Association Mutual Water Company
- Redwood Terrace Mutual Water Company
- Skylonda Mutual Water Company