Tap water in Houston, TX — ZIP 77377
4 public water systems serving about 43,144 people. PFAS "forever chemicals" have been detected here.
A
Excellent
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 77377
Northwest Harris County Mud 5
PWSID TX1010884 · serves 25,425 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 19.2 ppt
Malcomson Road Utility District
PWSID TX1010495 · serves 7,231 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 6.2 ppt
Northwest Harris County Mud 15
PWSID TX1011600 · serves 6,915 ·
groundwater
0 health-based / 0 total violations (5 yrs)
Harris County Mud 281
PWSID TX1013178 · serves 3,573 ·
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