Tap water in Tustin, CA — ZIP 92780
2 public water systems serving about 515,466 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 92780
Irvine Ranch Water District
PWSID CA3010092 · serves 450,323 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 7.9 ppt
City Of Tustin
PWSID CA3010046 · serves 65,143 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 4.2 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