Tap water in Austin, TX — ZIP 78665
9 public water systems serving about 232,625 people. PFAS "forever chemicals" have been detected here.
F
Failing
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 78665
City Of Round Rock
PWSID TX2460003 · serves 130,662 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 6.7 ppt
Manville Wsc
PWSID TX2270033 · serves 39,648 ·
surface water
4 health-based / 9 total violations (5 yrs)
· PFAS up to 24.3 ppt — above federal limit
Jonah Water Sud
PWSID TX2460022 · serves 29,861 ·
surface water
0 health-based / 1 total violations (5 yrs)
· PFAS up to 21.2 ppt — above federal limit
Travis County Wcid 10
PWSID TX2270182 · serves 9,204 ·
surface water
0 health-based / 1 total violations (5 yrs)
· PFAS up to 9.9 ppt — above federal limit
Williamson County Wsid 3
PWSID TX2460152 · serves 8,265 ·
groundwater
0 health-based / 1 total violations (5 yrs)
· PFAS up to 5 ppt
Travis County Wcid 18
PWSID TX2270083 · serves 5,733 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 8.2 ppt
Williamson County Mud 11
PWSID TX2460159 · serves 4,248 ·
surface water
0 health-based / 1 total violations (5 yrs)
· PFAS up to 5.6 ppt
Williamson County Mud 10
PWSID TX2460145 · serves 3,513 ·
surface water
0 health-based / 1 total violations (5 yrs)
· PFAS up to 5.6 ppt
Travis County Mud 18
PWSID TX2270403 · serves 1,491 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 8.6 ppt
Grades summarize EPA SDWIS violation records (last 5 years) and UCMR 5 PFAS results. They are informational, not a health determination. Methodology