Tap Water Results

Is The Colony, 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 the Colony. 4 PFAS were detected below the limits.

2 public water systems serve parts of The Colony. The largest, City of the Colony, serves 45,367 people. Your water bill names your system.

Largest system

City of the Colony

45,367 people · Purchased surface water · EPA ID TX0610081

Buys treated water from Dallas Water Utility, City of Plano.

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: 0.62 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: 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.

The Colony homes and lead pipes

21%
of homes built before 1980 (Texas 33%, US 50%)
0%
built before 1950 (Texas 6%)
40%
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. Renting? Ask your landlord what the service line is made of, because it's their pipe to replace. How to check your own line.

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

Other water systems serving The Colony

  • Bryan County Rws & Swmd #2
    6,270 people · Surface water · Oklahoma · reported ZIPs here
    Total trihalomethanes (TTHM) violationsAlso: Haloacetic acids (HAA5) violation

How nearby cities compare

CityMain water systemPFASLead (90th pct.)
Lewisville 5 mi
City of Lewisville
City of LewisvilleNone above limits1.48 ppb
Frisco 7 mi
City of Frisco
City of FriscoNone above limits1.4 ppb
Carrollton 7 mi
City of Carrollton
City of CarrolltonNone above limits0 ppb
Little Elm 7 mi
Mustang Special Utility District
Mustang Special Utility DistrictNone above limits1.33 ppb
Plano 9 mi
City of Plano
City of PlanoNone above limits1.68 ppb
Coppell 10 mi
City of Coppell
City of CoppellNone above limits0 ppb
The Colony ZIP codes (1)
  • 75056

Questions

Is The Colony tap water safe to drink?

City of the Colony 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 The Colony, TX?

2 public water systems serve parts of The Colony. The largest is City of the Colony (45,367 people). Your water bill names your system. The EPA ID is also on your utility's Consumer Confidence Report.

Does The Colony tap water have PFAS?

City of the Colony had 4 PFAS detected at least once in EPA's 2023–2025 testing, all with averages below the federal limits.

Do The Colony homes have lead pipes?

Census estimates put 21% of The Colony 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 the Colony'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.