Tap water in Upland, CA — ZIP 91784
4 public water systems serving about 334,968 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 91784
Cucamonga Valley Water District
PWSID CA3610018 · serves 213,375 ·
surface water
0 health-based / 0 total violations (5 yrs)
Upland, City Of
PWSID CA3610050 · serves 78,376 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 5.7 ppt
Gswc - Claremont
PWSID CA1910024 · serves 39,776 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 12.9 ppt — above federal limit
San Antonio Water Company
PWSID CA3610085 · serves 3,441 ·
groundwater
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