Tap water in South San Francisco, CA — ZIP 94080
2 public water systems serving about 76,095 people.
A
Excellent
Water systems serving 94080
California Water Service-S San Francisco
PWSID CA4110009 · serves 62,609 ·
surface water
0 health-based / 0 total violations (5 yrs)
Westborough Water District
PWSID CA4110027 · serves 13,486 ·
surface water
0 health-based / 0 total violations (5 yrs)
Grades summarize EPA SDWIS violation records (last 5 years) and UCMR 5 PFAS results. They are informational, not a health determination. Methodology