Is Sherman, TX tap water safe?

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

No federal limits exceeded in EPA data for City of Sherman. 3 PFAS were detected below the limits.

5 public water systems serve parts of Sherman. The largest, City of Sherman, serves 43,645 people. Your water bill names your system.

Largest system

City of Sherman

43,645 people · Surface water · EPA ID TX0910006

PFAS	Highest average	Limit	Status
PFOA Not detected	–	4 ppt	Not detected
PFOS Not detected	–	4 ppt	Not detected
PFHxS Not detected	–	10 ppt	Not detected
PFNA Not detected	–	10 ppt	Not detected
HFPO-DA (GenX) Not detected	–	10 ppt	Not 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 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.

Sherman homes and lead pipes

50%

of homes built before 1980 (Texas 33%, US 50%)

13%

built before 1950 (Texas 6%)

47%

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 Sherman city (tables B25034, B25003). Estimates for small places have a margin of error.

Other water systems serving Sherman

Two Way Special Utility District
6,804 people · Groundwater · Texas · reported ZIPs here
Lithium above screening level
South Grayson Special Utility District
6,750 people · Groundwater · Texas · reported ZIPs here
Lithium above screening level
Bryan County Rws & Swmd #2
6,270 people · Surface water · Oklahoma · reported ZIPs here
Total trihalomethanes (TTHM) violationsAlso: Haloacetic acids (HAA5) violation
Luella Special Utility District
4,200 people · Groundwater · Texas · reported ZIPs here
Lithium above screening level

How nearby cities compare

City	Main water system	PFAS	Lead (90th pct.)
Denison 10 mi City of Denison	City of Denison	None above limits	1.82 ppb
Anna 20 mi City of Anna	City of Anna	None above limits	0 ppb
Melissa 24 mi City of Melissa	City of Melissa	None above limits	1.43 ppb
Celina 24 mi Mustang Special Utility District	Mustang Special Utility District	None above limits	1.33 ppb
Prosper 29 mi Town of Prosper	Town of Prosper	None above limits	1.98 ppb
McKinney 30 mi City of McKinney	City of McKinney	None above limits	1.65 ppb

Sherman ZIP codes (2)

75090
75092

Questions

Is Sherman tap water safe to drink?

City of Sherman 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 Sherman, TX?

5 public water systems serve parts of Sherman. The largest is City of Sherman (43,645 people). Your water bill names your system. The EPA ID is also on your utility's Consumer Confidence Report.

Does Sherman tap water have PFAS?

City of Sherman had 3 PFAS detected at least once in EPA's 2023–2025 testing, all with averages below the federal limits.

Do Sherman homes have lead pipes?

Census estimates put 50% of Sherman 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 Sherman'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.