Tap water in San Antonio, TX — ZIP 78223
4 public water systems serving about 2,680,312 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 78223
San Antonio Water System
PWSID TX0150018 · serves 2,643,729 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 9.2 ppt
East Central Sud
PWSID TX0150138 · serves 26,137 ·
surface water
0 health-based / 0 total violations (5 yrs)
Oak Hills Wsc
PWSID TX2470009 · serves 6,225 ·
groundwater
0 health-based / 1 total violations (5 yrs)
City Of Elmendorf
PWSID TX0150048 · serves 4,221 ·
groundwater
0 health-based / 5 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