Is Norman, 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 Norman Utilities Authority. 2 PFAS were detected below the limits.

3 public water systems serve parts of Norman. The largest, Norman Utilities Authority, serves 104,868 people. Your water bill names your system.

Largest system

Norman Utilities Authority

104,868 people · Surface water · EPA ID OK1020801

Buys treated water from Oklahoma City Utilities.

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 (Nov 2026, and 9 in 10 homes sampled were at or below it) Below action level
Health-based violations since 2016: 1

Full Norman Utilities Authority results

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.

Norman homes and lead pipes

38%

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

built before 1950 (Oklahoma 12%)

47%

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

Other water systems serving Norman

Oklahoma University Water System
34,000 people · Purchased surface water · Oklahoma · reported ZIPs here
No PFAS above limits
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

City	Main water system	PFAS	Lead (90th pct.)
Moore 10 mi Moore Public Works Authority	Moore Public Works Authority	None above limits	0 ppb
Midwest City 15 mi Midwest City Water System	Midwest City Water System	None above limits	1.2 ppb
Oklahoma City 18 mi Oklahoma City Utilities	Oklahoma City Utilities	None above limits	0 ppb
Shawnee 26 mi Shawnee Municipal Authority	Shawnee Municipal Authority	None above limits	2.8 ppb
Edmond 30 mi Edmond Public Works Authority	Edmond Public Works Authority	None above limits	0 ppb
Yukon 30 mi Yukon Water System	Yukon Water System	None above limits	0 ppb

Norman ZIP codes (6)

73019
73026
73069
73070
73071
73072

Questions

Is Norman tap water safe to drink?

Norman Utilities Authority had 1 health-based violation 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 Norman, OK?

3 public water systems serve parts of Norman. The largest is Norman Utilities Authority (104,868 people). Your water bill names your system. The EPA ID is also on your utility's Consumer Confidence Report.

Does Norman tap water have PFAS?

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

Do Norman homes have lead pipes?

Census estimates put 38% of Norman 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. Norman Utilities 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.