Tap water in San Jose, CA — ZIP 95123
2 public water systems serving about 1,152,502 people. PFAS "forever chemicals" have been detected here.
F
Failing
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 95123
San Jose Water
PWSID CA4310011 · serves 1,039,920 ·
surface water
1 health-based / 1 total violations (5 yrs)
· PFAS up to 6.2 ppt — above federal limit
Great Oaks Wc Inc
PWSID CA4310022 · serves 112,582 ·
groundwater
0 health-based / 0 total violations (5 yrs)
· PFAS up to 8 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