Tap water in Houston, TX — ZIP 77338
4 public water systems serving about 3,012,742 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 77338
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
Harris County Mud 26
PWSID TX1010715 · serves 17,178 ·
groundwater
0 health-based / 1 total violations (5 yrs)
City Of Humble
PWSID TX1010014 · serves 15,616 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 8.8 ppt
Hunters Glen Mud
PWSID TX1010615 · serves 9,405 ·
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