Tap water in Houston, TX — ZIP 77346
12 public water systems serving about 3,055,680 people. PFAS "forever chemicals" have been detected here.
F
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 77346
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 153
PWSID TX1012133 · serves 11,781 ·
groundwater
0 health-based / 0 total violations (5 yrs)
Harris County Mud 278
PWSID TX1012835 · serves 10,584 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 6 ppt
Trail Of The Lakes Mud
PWSID TX1010617 · serves 9,480 ·
groundwater
6 health-based / 8 total violations (5 yrs)
Harris County Mud 132
PWSID TX1010616 · serves 8,682 ·
groundwater
0 health-based / 0 total violations (5 yrs)
Harris County Mud 290
PWSID TX1013294 · serves 8,259 ·
groundwater
0 health-based / 0 total violations (5 yrs)
Harris County Mud 151
PWSID TX1010905 · serves 7,464 ·
groundwater
0 health-based / 0 total violations (5 yrs)
Harris County Mud 152
PWSID TX1010902 · serves 7,314 ·
groundwater
0 health-based / 0 total violations (5 yrs)
Bryan Co. Rws & Swmd #2
PWSID OK1010604 · serves 6,270 ·
surface water
3 health-based / 9 total violations (5 yrs)
Harris County Mud 46
PWSID TX1010903 · serves 5,418 ·
groundwater
1 health-based / 3 total violations (5 yrs)
Harris County Mud 400 - West
PWSID TX1013310 · serves 5,217 ·
surface water
0 health-based / 0 total violations (5 yrs)
Harris County Mud 106
PWSID TX1013160 · serves 4,668 ·
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