Tap Water Results

Is Prosper, TX tap water safe?

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

Summary

No federal limits exceeded in EPA data for Town of Prosper. 6 PFAS were detected below the limits.

3 public water systems serve parts of Prosper. The largest, Town of Prosper, serves 42,598 people. Your water bill names your system.

Largest system

Town of Prosper

42,598 people · Purchased surface water · EPA ID TX0430009

Buys treated water from North Texas Municipal Water District Wylie Water Treatment Plant.

PFASHighest averageLimitStatus
PFOA
Not detected
–4 pptNot detected
PFOS
One sample above limit
1.18 ppt4 pptOne sample above limit
PFHxS
Detected, below limit
1.3 ppt10 pptDetected, below limit
PFNA
Not detected
–10 pptNot detected
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.

Lead: 1.98 ppb at the 90th percentile (Dec 2024, and 9 in 10 homes sampled were at or below it) Below action level
Health-based violations since 2016: 0

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.

Prosper homes and lead pipes

1%
of homes built before 1980 (Texas 33%, US 50%)
0%
built before 1950 (Texas 6%)
12%
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 Prosper town (tables B25034, B25003). Estimates for small places have a margin of error.

Other water systems serving Prosper

  • Bryan County Rws & Swmd #2
    6,270 people · Surface water · Oklahoma · reported ZIPs here
    Total trihalomethanes (TTHM) violationsAlso: Haloacetic acids (HAA5) violation
  • Elm Ridge Water Control & Improvement District
    5,061 people · Purchased surface water · Texas · reported ZIPs here
    No PFAS above limits

How nearby cities compare

CityMain water systemPFASLead (90th pct.)
Celina 5 mi
Mustang Special Utility District
Mustang Special Utility DistrictNone above limits1.33 ppb
Frisco 6 mi
City of Frisco
City of FriscoNone above limits1.4 ppb
Little Elm 7 mi
Mustang Special Utility District
Mustang Special Utility DistrictNone above limits1.33 ppb
McKinney 9 mi
City of McKinney
City of McKinneyNone above limits1.65 ppb
The Colony 12 mi
City of the Colony
City of the ColonyNone above limits0.62 ppb
Allen 12 mi
City of Allen
City of AllenNone above limits1.7 ppb
Prosper ZIP codes (1)
  • 75078

Questions

Is Prosper tap water safe to drink?

Town of Prosper has had no health-based violations since 2016. 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 Prosper, TX?

3 public water systems serve parts of Prosper. The largest is Town of Prosper (42,598 people). Your water bill names your system. The EPA ID is also on your utility's Consumer Confidence Report.

Does Prosper tap water have PFAS?

Town of Prosper had 6 PFAS detected at least once in EPA's 2023–2025 testing, all with averages below the federal limits.

Do Prosper homes have lead pipes?

Census estimates put 1% of Prosper 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. Town of Prosper'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.