Is Ponca City, OK Tap Water Safe? Quality & Contaminants

What was found in Ponca City's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

Contaminant	Level vs EPA limit	Suppliers	Source
Nitrate-Nitrite	5410 µg/L 54% of the EPA limit 10000 µg/L	2/4	SYR4
Fluoride	1140 µg/L 28% of the EPA limit 4000 µg/L	2/4	SYR4
Copper	833 µg/L 64% of the EPA limit 1300 µg/L	3/4	SYR4
Barium	177 µg/L 8.9% of the EPA limit 2000 µg/L	2/4	SYR4
TTHM	94.4 µg/L 118% of the EPA limit, in the worst sample — 80 µg/L	3/4	SYR4
Bromoform	39.2 µg/L No EPA limit set	3/4	SYR4
Dibromochloromethane	35.8 µg/L No EPA limit set	3/4	SYR4
Lead	31.8 µg/L 212% of the EPA limit, in the worst sample — 15 µg/L	2/4	SYR4
Bromodichloromethane	27.7 µg/L No EPA limit set	3/4	SYR4
Chloroform	24.2 µg/L No EPA limit set	3/4	SYR4
Lithium	19.4 µg/L No EPA limit set	1/4	UCMR-5
Total Haloacetic Acids (HAA5)	17 µg/L 28% of the EPA limit 60 µg/L	3/4	SYR4
Gross Beta Particle Activity	11.4 pCi/L No EPA limit set	2/4	SYR4
Dibromoacetic Acid	10.7 µg/L No EPA limit set	3/4	SYR4
Dichloroacetic Acid	7.81 µg/L No EPA limit set	3/4	SYR4
Gross Alpha, Excl. Radon And U	5.95 pCi/L 40% of the EPA limit 15 pCi/L	2/4	SYR4
Selenium	5.4 µg/L 11% of the EPA limit 50 µg/L	1/4	SYR4
Combined Uranium	3.11 µg/L 10% of the EPA limit 30 µg/L	1/4	SYR4
Trichloroacetic Acid	2.59 µg/L No EPA limit set	3/4	SYR4
Monobromoacetic Acid	2.05 µg/L No EPA limit set	3/4	SYR4
Combined Radium (-226 And -228)	1.77 pCi/L 35% of the EPA limit 5 pCi/L	2/4	SYR4
Dichloromethane	0.5800 µg/L 12% of the EPA limit 5 µg/L	1/4	SYR4
PFOS	0.0081 µg/L No EPA limit set	1/4	UCMR-5
PFHXS	0.0067 µg/L No EPA limit set	1/4	UCMR-5
PFBS	0.0053 µg/L No EPA limit set	1/4	UCMR-5
9Cl-PF3ONS	0.0034 µg/L No EPA limit set	1/4	UCMR-5
Lead	0.0010 mg/L 6.7% of the EPA limit 0.0150 mg/L	4/4	LCR

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving Ponca City

Supplier	Population served
PONCA CITY MUN WATER	27,155
KAY CO RWD #1	1,765
KAY CO RWD #3	1,000
Ponca Tribe Of Oklahoma	360

Frequently asked questions about Ponca City tap water

Is Ponca City tap water safe to drink?

EPA testing detected 27 contaminants in the water serving Ponca City. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve Ponca City?

4 public water suppliers report drinking-water monitoring for Ponca City, Oklahoma to the EPA. Each is listed above with its population served.

What contaminants are in Ponca City's water?

The contaminants EPA monitoring detected in Ponca City include Nitrate-Nitrite, Fluoride, Copper, Barium, TTHM. The full list, with the highest level found and the data source, is in the table above.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.