Tap water in Austin, TX — ZIP 78728
3 public water systems serving about 1,264,000 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 78728
City Of Austin Water & Wastewater
PWSID TX2270001 · serves 1,115,323 ·
surface water
1 health-based / 1 total violations (5 yrs)
· PFAS up to 8.4 ppt — above federal limit
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
Wells Branch Mud 1
PWSID TX2270227 · serves 18,015 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 5.4 ppt
Grades summarize EPA SDWIS violation records (last 5 years) and UCMR 5 PFAS results. They are informational, not a health determination. Methodology