Tap water in Houston, TX — ZIP 77407
14 public water systems serving about 108,078 people. PFAS "forever chemicals" have been detected here.
D
Poor
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 77407
Fort Bend County Mud 30
PWSID TX0790146 · serves 16,794 ·
surface water
0 health-based / 4 total violations (5 yrs)
· PFAS up to 7.1 ppt
Fort Bend County Mud 25
PWSID TX0790130 · serves 15,327 ·
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
Fort Bend County Mud 134b
PWSID TX0790532 · serves 7,356 ·
groundwater
0 health-based / 0 total violations (5 yrs)
· PFAS up to 5.5 ppt
Fort Bend County Mud 134c
PWSID TX0790533 · serves 7,260 ·
groundwater
0 health-based / 0 total violations (5 yrs)
· PFAS up to 5.5 ppt
Fort Bend County Mud 143 Water View Esta
PWSID TX0790472 · serves 7,245 ·
groundwater
0 health-based / 0 total violations (5 yrs)
· PFAS up to 5 ppt
Grand Mission Mud 1
PWSID TX0790430 · serves 6,663 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 6.3 ppt
Big Oaks Mud
PWSID TX0790332 · serves 6,450 ·
surface water
0 health-based / 1 total violations (5 yrs)
· PFAS up to 6.9 ppt — above federal limit
Fort Bend County Mud 50
PWSID TX0790277 · serves 6,234 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 8.6 ppt
Fort Bend County Mud 146
PWSID TX0790435 · serves 5,985 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 7.1 ppt
Fort Bend County Mud 118
PWSID TX0790366 · serves 5,346 ·
surface water
0 health-based / 2 total violations (5 yrs)
· PFAS up to 7.8 ppt
Fort Bend County Mud 165
PWSID TX0790470 · serves 4,314 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 21.7 ppt — above federal limit
Fort Bend County Mud 123
PWSID TX0790446 · serves 4,143 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 5.6 ppt
Fort Bend County Mud 122
PWSID TX0790416 · serves 3,366 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 9.5 ppt
Grades summarize EPA SDWIS violation records (last 5 years) and UCMR 5 PFAS results. They are informational, not a health determination. Methodology