Tap water in San Antonio, TX — ZIP 78227
3 public water systems serving about 2,684,942 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 78227
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
Jbsa Sam Houston
PWSID TX0150116 · serves 37,563 ·
groundwater
1 health-based / 3 total violations (5 yrs)
Jbsa Medina
PWSID TX0150275 · serves 3,650 ·
groundwater
0 health-based / 0 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