Tap water in Seguin, TX — ZIP 78155

3 public water systems serving about 120,774 people. PFAS "forever chemicals" have been detected here.

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 78155

Green Valley Sud

PWSID TX0940020 · serves 52,497 · surface water

0 health-based / 6 total violations (5 yrs) · PFAS up to 4.9 ppt

Springs Hill Sud

PWSID TX0940022 · serves 35,541 · surface water

2 health-based / 3 total violations (5 yrs) · PFAS up to 5.4 ppt — above federal limit

City Of Seguin

PWSID TX0940002 · serves 32,736 · surface water

1 health-based / 1 total violations (5 yrs) · PFAS up to 9.7 ppt

Grades summarize EPA SDWIS violation records (last 5 years) and UCMR 5 PFAS results. They are informational, not a health determination. Methodology