Tap water in Houston, TX — ZIP 77090
6 public water systems serving about 3,013,002 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 77090
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
Cnp Utility District
PWSID TX1010429 · serves 14,718 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 7.2 ppt
Ponderosa Forest Utility District
PWSID TX1010384 · serves 10,101 ·
groundwater
0 health-based / 3 total violations (5 yrs)
· PFAS up to 7 ppt
Harris County Mud 189
PWSID TX1011809 · serves 6,906 ·
groundwater
0 health-based / 0 total violations (5 yrs)
Harris County Mud 86
PWSID TX1012953 · serves 5,397 ·
surface water
0 health-based / 2 total violations (5 yrs)
· PFAS up to 6.6 ppt
Westador Mud
PWSID TX1010277 · serves 5,337 ·
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