Tap water in Rialto, CA — ZIP 92337
2 public water systems serving about 324,393 people.
A
Excellent
Water systems serving 92337
San Gabriel Valley Wc - Fontana
PWSID CA3610041 · serves 228,270 ·
surface water
0 health-based / 0 total violations (5 yrs)
West Valley Water District
PWSID CA3610004 · serves 96,123 ·
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