Tap water in Houston, TX — ZIP 77450
13 public water systems serving about 97,733 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 77450
Cimarron Mud
PWSID TX1011410 · serves 19,338 ·
groundwater
0 health-based / 0 total violations (5 yrs)
Fort Bend County Mud 142
PWSID TX0790429 · serves 11,595 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 9.1 ppt — above federal limit
Harris County Mud 81
PWSID TX1010581 · serves 11,475 ·
groundwater
0 health-based / 0 total violations (5 yrs)
Mason Creek Utility District
PWSID TX1010379 · serves 8,900 ·
groundwater
0 health-based / 0 total violations (5 yrs)
Nottingham Country Mud
PWSID TX1012315 · serves 7,095 ·
groundwater
0 health-based / 0 total violations (5 yrs)
Memorial Mud
PWSID TX1011242 · serves 6,615 ·
groundwater
0 health-based / 0 total violations (5 yrs)
Interstate Mud
PWSID TX1012264 · serves 6,591 ·
groundwater
0 health-based / 0 total violations (5 yrs)
· PFAS up to 6.3 ppt
Cinco Mud 8
PWSID TX0790324 · serves 5,613 ·
groundwater
0 health-based / 0 total violations (5 yrs)
Cornerstones Mud
PWSID TX1011692 · serves 5,331 ·
groundwater
0 health-based / 0 total violations (5 yrs)
Cinco Mud 2
PWSID TX0790306 · serves 4,743 ·
groundwater
0 health-based / 0 total violations (5 yrs)
Cinco Mud 7
PWSID TX0790343 · serves 4,239 ·
groundwater
0 health-based / 0 total violations (5 yrs)
West Memorial Mud
PWSID TX1010540 · serves 4,182 ·
groundwater
0 health-based / 0 total violations (5 yrs)
Harris County Mud 61
PWSID TX1010721 · serves 2,016 ·
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