Tap water in Alpine, CA — ZIP 91901
2 public water systems serving about 103,580 people. PFAS "forever chemicals" have been detected here.
B
Good
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 91901
Padre Dam Mwd
PWSID CA3710037 · serves 93,980 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 5.8 ppt
Viejas Community System
PWSID 090600158 · serves 9,600 ·
groundwater
0 health-based / 2 total violations (5 yrs)
· PFAS up to 24.3 ppt
Grades summarize EPA SDWIS violation records (last 5 years) and UCMR 5 PFAS results. They are informational, not a health determination. Methodology