Tap water in Houston, TX — ZIP 77433
9 public water systems serving about 97,203 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 77433
Harris County Mud 165
PWSID TX1012187 · serves 40,503 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 4.7 ppt
Harris County Mud 157
PWSID TX1011430 · serves 13,062 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 9.9 ppt
Cypress Hill Mud 1
PWSID TX1012378 · serves 11,052 ·
groundwater
0 health-based / 0 total violations (5 yrs)
Harris County Mud 419
PWSID TX1013335 · serves 7,389 ·
groundwater
0 health-based / 0 total violations (5 yrs)
· PFAS up to 6.2 ppt
Harris County Mud 354
PWSID TX1012965 · serves 6,588 ·
groundwater
0 health-based / 0 total violations (5 yrs)
Harris County Mud 374 Cypress Creek Lake
PWSID TX1013450 · serves 5,526 ·
groundwater
0 health-based / 0 total violations (5 yrs)
· PFAS up to 6 ppt
Harris County Mud 397
PWSID TX1013295 · serves 4,413 ·
groundwater
0 health-based / 0 total violations (5 yrs)
Harris County Mud 172
PWSID TX1012970 · serves 4,404 ·
surface water
0 health-based / 1 total violations (5 yrs)
· PFAS up to 9.1 ppt
Harris County Mud 322
PWSID TX1012542 · serves 4,266 ·
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