Tap Water Results

Is Hutto, TX tap water safe?

Data: U.S. EPA · How we read the data · How we check it

Summary

Manville Water Supply Corporation, the largest system here, had PFAS above the 2024 federal limits (PFOS, PFNA, PFAS Hazard Index) in EPA's 2023–2025 testing.

Is it an emergency? No: PFAS limits are about years of exposure, not a glass of water, and nothing in EPA's data calls for you to stop drinking the water today. If your utility issues a boil-water or do-not-drink notice, follow it.

3 public water systems serve parts of Hutto. The largest, Manville Water Supply Corporation, serves 39,648 people, and one system here had PFAS above a federal limit. Your water bill names your system.

Largest system

Manville Water Supply Corporation

39,648 people · Purchased surface water · EPA ID TX2270033

Buys treated water from 130 Regional Water Supply Corporation, City of Pflugerville.

PFASHighest averageLimitStatus
PFOA
One sample above limit
2.95 ppt4 pptOne sample above limit
PFOS
Above limit
11 ppt4 pptAbove limit
PFHxS
Detected, below limit
6.85 ppt10 pptDetected, below limit
PFNA
Above limit
16.5 ppt10 pptAbove limit
HFPO-DA (GenX)
Not detected
–10 pptNot detected

ppt = parts per trillion. "Highest average" is the highest average at any of the system's entry points, the way EPA compares results with the limits.

For context: the PFOS average is higher than at 99% of the Texas systems EPA tested and the PFNA average is higher than at 99% of the Texas systems EPA tested.

Lead: 1.41 ppb at the 90th percentile (Dec 2025, and 9 in 10 homes sampled were at or below it) Below action level
Health-based violations since 2016: 5

Full Manville Water Supply Corporation results

Across Texas, 28 of 1,130 water systems EPA tested had PFAS above a 2024 federal limit, and 13 systems were above the lead action level in results from the last five years. Texas results.

Hutto homes and lead pipes

3%
of homes built before 1980 (Texas 33%, US 50%)
2%
built before 1950 (Texas 6%)
20%
of households rent (Texas 37%)

Lead service lines and lead solder were allowed until 1986, so homes from before then are the ones to check. How to check your own line.

Housing: Census American Community Survey 2020–2024 5-year estimates for Hutto city (tables B25034, B25003). Estimates for small places have a margin of error.

Other water systems serving Hutto

  • Jonah Water Special Utility District
    29,861 people · Purchased surface water · Texas · reported ZIPs here
    Total trihalomethanes (TTHM) violationsAlso: PFOA detected · PFOS detected · PFHxS detected
  • City of Hutto
    29,580 people · Purchased surface water · Texas · lists this city
    Lithium above screening level

How nearby cities compare

CityMain water systemPFASLead (90th pct.)
Round Rock 7 mi
City of Austin Water & Wastewater
City of Austin Water & WastewaterNone above limits0 ppb
Pflugerville 7 mi
City of Austin Water & Wastewater
City of Austin Water & WastewaterNone above limits0 ppb
Georgetown 13 mi
City of Georgetown
City of GeorgetownNone above limits4.81 ppb
Cedar Park 16 mi
City of Austin Water & Wastewater
City of Austin Water & WastewaterNone above limits0 ppb
Leander 19 mi
City of Austin Water & Wastewater
City of Austin Water & WastewaterNone above limits0 ppb
Austin 21 mi
City of Austin Water & Wastewater
City of Austin Water & WastewaterNone above limits0 ppb
Hutto ZIP codes (1)
  • 78634

Questions

Is Hutto tap water safe to drink?

Manville Water Supply Corporation had 5 health-based violations since 2016, and EPA testing found PFAS above the 2024 federal limits, which it must meet by 2029. Utility data can't show lead from your own pipes: if your home was built before 1986, test your tap. Your utility's annual Consumer Confidence Report is the official summary.

Who supplies water in Hutto, TX?

3 public water systems serve parts of Hutto. The largest is Manville Water Supply Corporation (39,648 people). Your water bill names your system. The EPA ID is also on your utility's Consumer Confidence Report.

Does Hutto tap water have PFAS?

Yes. EPA's 2023–2025 testing found entry-point averages above the 2024 federal limits for PFOS and PFNA and PFAS Hazard Index at Manville Water Supply Corporation. Systems have until 2029 to meet them.

Do Hutto homes have lead pipes?

Census estimates put 3% of Hutto homes as built before 1980 (Texas: 33%). Lead service lines and lead solder were allowed until 1986, so older homes are more likely to have them. Manville Water Supply Corporation's service line inventory says what your line is made of. The only way to know for your home is to check the line where it enters the house and test your tap.

Source: U.S. EPA drinking water records and PFAS testing (UCMR 5). How we read the data.