Where San Ramon's tap water comes from
EPA records tie San Ramon to 3 water systems. Your water bill names the one that serves your address.
Contra Costa County · Population 85,924
Water systems for San Ramon
East Bay Municipal Utility District
PWSID CA0110005 · Purity Score 100/100 (Excellent) · Confidence: moderate · Assessed at the water-system levelAbout 62% of San Ramon's homes are inside East Bay Municipal Utility District's service area (EPA service-area map).
Full water report for East Bay Municipal Utility DistrictEast Bay Municipal Utility District: contact and record
Dublin San Ramon Services District
PWSID CA0110009 · Purity Score 100/100 (Excellent) · Confidence: moderate · Assessed at the water-system levelAbout 18% of San Ramon's homes are inside Dublin San Ramon Services District's service area (EPA service-area data).
Full water report for Dublin San Ramon Services DistrictDublin San Ramon Services District: contact and record
Zone 7 Water Agency
About 18% of San Ramon's homes are inside Zone 7 Water Agency's service area (EPA service-area data).
System-level records from EPA. Not a test of your tap.
ZIP codes in San Ramon
A ZIP code is a postal area, not a water service area. Your water bill names your supplier.