Tap water in San Diego, CA — ZIP 92040
4 public water systems serving about 1,816,335 people. PFAS "forever chemicals" have been detected here.
D
Poor
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 92040
San Diego, City Of
PWSID CA3710020 · serves 1,408,937 ·
surface water
0 health-based / 0 total violations (5 yrs)
Helix Water District
PWSID CA3710010 · serves 277,918 ·
surface water
0 health-based / 0 total violations (5 yrs)
Padre Dam Mwd
PWSID CA3710037 · serves 93,980 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 5.8 ppt
Lakeside Wd
PWSID CA3710013 · serves 35,500 ·
surface water
0 health-based / 2 total violations (5 yrs)
· PFAS up to 5.8 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