Tap Water Results

Is Princeton, 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 City of Princeton. 1 PFAS were detected below the limits.

2 public water systems serve parts of Princeton. The largest, City of Princeton, serves 37,019 people. Your water bill names your system.

Largest system

City of Princeton

37,019 people · Purchased surface water · EPA ID TX0430008

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

PFASHighest averageLimitStatus
PFOA
Not detected
–4 pptNot detected
PFOS
Not detected
–4 pptNot detected
PFHxS
Not detected
–10 pptNot detected
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: 1.76 ppb at the 90th percentile (Nov 2026, 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.

Princeton homes and lead pipes

10%
of homes built before 1980 (Texas 33%, US 50%)
0%
built before 1950 (Texas 6%)
24%
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 Princeton city (tables B25034, B25003). Estimates for small places have a margin of error.

Other water systems serving Princeton

  • Culleoka Water Supply Corporation
    24,615 people · Purchased surface water · Texas · reported ZIPs here
    No PFAS above limits

How nearby cities compare

CityMain water systemPFASLead (90th pct.)
Melissa 6 mi
City of Melissa
City of MelissaNone above limits1.43 ppb
McKinney 8 mi
City of McKinney
City of McKinneyNone above limits1.65 ppb
Anna 10 mi
City of Anna
City of AnnaNone above limits0 ppb
Allen 11 mi
City of Allen
City of AllenNone above limits1.7 ppb
Wylie 11 mi
City of Wylie
City of WylieNone above limits1.03 ppb
Sachse 16 mi
City of Sachse
City of SachseNone above limits0 ppb
Princeton ZIP codes (1)
  • 75407

Questions

Is Princeton tap water safe to drink?

City of Princeton 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 Princeton, TX?

2 public water systems serve parts of Princeton. The largest is City of Princeton (37,019 people). Your water bill names your system. The EPA ID is also on your utility's Consumer Confidence Report.

Does Princeton tap water have PFAS?

City of Princeton had 1 PFAS detected at least once in EPA's 2023–2025 testing, all with averages below the federal limits.

Do Princeton homes have lead pipes?

Census estimates put 10% of Princeton 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. City of Princeton'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.