Tap water in Houston, TX — ZIP 77396
6 public water systems serving about 3,023,383 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 77396
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 Humble
PWSID TX1010014 · serves 15,616 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 8.8 ppt
Harris County Mud 49
PWSID TX1011462 · serves 10,893 ·
surface water
0 health-based / 2 total violations (5 yrs)
· PFAS up to 5.3 ppt
Harris County Mud 278
PWSID TX1012835 · serves 10,584 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 6 ppt
Harris County Wcid 96
PWSID TX1013175 · serves 10,530 ·
groundwater
0 health-based / 0 total violations (5 yrs)
· PFAS up to 6.5 ppt
Harris County Mud 400 - West
PWSID TX1013310 · serves 5,217 ·
surface water
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