Zone 7 drinking water sources include local and imported surface water as well as groundwater. A source water assessment is conducted on each drinking water source as required by the State Water Resources Control Board, Division of Drinking Water (DDW). The State Water Project's Watershed Sanitary Survey is updated every five years, while assessments for Zone 7's local wells and water treatment plant intakes on the South Bay Aqueduct are done on a one-time basis. Click on the links below for each applicable report:
Groundwater wells
- Chain of Lakes Well #1
- Chain of Lakes Well #2
- Chain of Lakes Well #5
- Hopyard Well #6
- Hopyard Well #9
- Mocho Wells #1-3
- Mocho Well #4
- Stoneridge Well
Treatment Plant Intakes on South Bay Aqueduct
State Water Project
To view Zone 7's annual Consumer Confidence Report, click here.
