Is Shawnee, OK tap water safe?

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

No federal limits exceeded in EPA data for Shawnee Municipal Authority. 2 PFAS were detected below the limits.

3 public water systems serve parts of Shawnee. The largest, Shawnee Municipal Authority, serves 29,990 people, and one system here had PFAS above a federal limit. Your water bill names your system.

Largest system

Shawnee Municipal Authority

29,990 people · Surface water · EPA ID OK1020504

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: 2.8 ppb at the 90th percentile (Dec 2023, and 9 in 10 homes sampled were at or below it) Below action level
Health-based violations since 2016: 7

Across Oklahoma, 8 of 167 water systems EPA tested had PFAS above a 2024 federal limit, and 5 systems were above the lead action level in results from the last five years. Oklahoma results.

Shawnee homes and lead pipes

63%

of homes built before 1980 (Oklahoma 49%, US 50%)

22%

built before 1950 (Oklahoma 12%)

42%

of households rent (Oklahoma 34%)

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

Other water systems serving Shawnee

Tri-County Rural Water District #2
5,172 people · Groundwater · Oklahoma · reported ZIPs here
PFOS above limitAlso: PFHxS above limit · Lithium above screening level · 1 health-based violation since 2016
Pottawatomie County Development Authority
1,200 people · Purchased surface water · Oklahoma · reported ZIPs here
Not in EPA's PFAS sample

How nearby cities compare

City	Main water system	PFAS	Lead (90th pct.)
Norman 26 mi Norman Utilities Authority	Norman Utilities Authority	None above limits	0 ppb
Midwest City 26 mi Midwest City Water System	Midwest City Water System	None above limits	1.2 ppb
Moore 31 mi Moore Public Works Authority	Moore Public Works Authority	None above limits	0 ppb
Oklahoma City 34 mi Oklahoma City Utilities	Oklahoma City Utilities	None above limits	0 ppb
Edmond 34 mi Edmond Public Works Authority	Edmond Public Works Authority	None above limits	0 ppb
Yukon 48 mi Yukon Water System	Yukon Water System	None above limits	0 ppb

Shawnee ZIP codes (1)

74801

Questions

Is Shawnee tap water safe to drink?

Shawnee Municipal Authority had 7 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 Shawnee, OK?

3 public water systems serve parts of Shawnee. The largest is Shawnee Municipal Authority (29,990 people). Your water bill names your system. The EPA ID is also on your utility's Consumer Confidence Report.

Does Shawnee tap water have PFAS?

Shawnee Municipal Authority had 2 PFAS detected at least once in EPA's 2023–2025 testing, all with averages below the federal limits.

Do Shawnee homes have lead pipes?

Census estimates put 63% of Shawnee homes as built before 1980 (Oklahoma: 49%). Lead service lines and lead solder were allowed until 1986, so older homes are more likely to have them. Shawnee Municipal Authority'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.