Tap water in Houston, TX — ZIP 77066
10 public water systems serving about 75,873 people. PFAS "forever chemicals" have been detected here.
B
Good
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 77066
City Of Houston Willow Chase
PWSID TX1011902 · serves 14,169 ·
groundwater
0 health-based / 0 total violations (5 yrs)
Harris County Wcid 109
PWSID TX1010359 · serves 10,134 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 8.6 ppt
Harris County Mud 109
PWSID TX1010620 · serves 9,501 ·
groundwater
0 health-based / 0 total violations (5 yrs)
Cy Champ Pud
PWSID TX1011522 · serves 7,428 ·
groundwater
0 health-based / 0 total violations (5 yrs)
· PFAS up to 6.3 ppt
Harris County Mud 150
PWSID TX1011250 · serves 6,786 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 6.9 ppt
Fallbrook Utility District
PWSID TX1010340 · serves 6,720 ·
groundwater
0 health-based / 0 total violations (5 yrs)
· PFAS up to 104 ppt
Harris County Mud 180
PWSID TX1011799 · serves 5,892 ·
groundwater
0 health-based / 0 total violations (5 yrs)
Harris County Mud 148 Kingslake
PWSID TX1010938 · serves 5,448 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 8 ppt
Harris County Mud 33
PWSID TX1011162 · serves 5,181 ·
groundwater
0 health-based / 0 total violations (5 yrs)
Fountainhead Mud
PWSID TX1010435 · serves 4,614 ·
surface water
0 health-based / 1 total violations (5 yrs)
· PFAS up to 8.2 ppt
Grades summarize EPA SDWIS violation records (last 5 years) and UCMR 5 PFAS results. They are informational, not a health determination. Methodology