Tap water in Houston, TX — ZIP 77598
4 public water systems serving about 3,223,512 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 77598
City Of Houston
PWSID TX1010013 · serves 2,970,543 ·
surface water
1 health-based / 1 total violations (5 yrs)
· PFAS up to 42.6 ppt
City Of League City
PWSID TX0840007 · serves 149,557 ·
surface water
0 health-based / 2 total violations (5 yrs)
· PFAS up to 102 ppt — above federal limit
Clear Lake City Water Authority
PWSID TX1010056 · serves 89,702 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 14.5 ppt — above federal limit
City Of Webster
PWSID TX1010226 · serves 13,710 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 11.1 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