Tap water in Rialto, CA — ZIP 92376
3 public water systems serving about 370,052 people. PFAS "forever chemicals" have been detected here.
C
Fair
PFAS detected: at least one system serving this ZIP reported PFAS in EPA UCMR 5
testing. Levels and the 2024 federal limits are shown per system below.
Water systems serving 92376
San Bernardino City
PWSID CA3610039 · serves 214,665 ·
groundwater
0 health-based / 0 total violations (5 yrs)
· PFAS up to 4.4 ppt
West Valley Water District
PWSID CA3610004 · serves 96,123 ·
surface water
0 health-based / 0 total violations (5 yrs)
Rialto, City Of
PWSID CA3610038 · serves 59,264 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 18 ppt — above federal limit
Grades summarize EPA SDWIS violation records (last 5 years) and UCMR 5 PFAS results. They are informational, not a health determination. Methodology