Tap water in San Jose, CA — ZIP 94404
2 public water systems serving about 140,092 people.
A
Excellent
Water systems serving 94404
California Water Service - San Mateo
PWSID CA4110008 · serves 103,536 ·
surface water
0 health-based / 0 total violations (5 yrs)
Estero Municipal Improvement District
PWSID CA4110021 · serves 36,556 ·
surface water
0 health-based / 1 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