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Tap water quality report

Enid, OK

EPA monitoring detected 28 contaminants across the 6 water suppliers serving Enid. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

6
water suppliers
54,039
people served
28
contaminants found
Oklahoma rankings Lead in Oklahoma PFAS in Oklahoma

What was found in Enid's water

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

ContaminantLevel vs EPA limitSuppliersSource
Nitrate-Nitrite
9560 µg/L 96%
of the EPA limit 10000 µg/L
 3/6 SYR4
Nitrate
9480 µg/L 95%
of the EPA limit 10000 µg/L
 1/6 SYR4
Copper
2510 µg/L 193%
of the EPA limit, in the worst sample — 1300 µg/L
 6/6 SYR4
Fluoride
760 µg/L 19%
of the EPA limit 4000 µg/L
 2/6 SYR4
Barium
515 µg/L 26%
of the EPA limit 2000 µg/L
 3/6 SYR4
Lead
322 µg/L 2147%
of the EPA limit, in the worst sample — 15 µg/L
 4/6 SYR4
TTHM
89.1 µg/L 111%
of the EPA limit, in the worst sample — 80 µg/L
 6/6 SYR4
Chloroform
52.1 µg/L
No EPA limit set
 6/6 SYR4
Bromoform
46.7 µg/L
No EPA limit set
 6/6 SYR4
Lithium
36.5 µg/L
No EPA limit set
 1/6 UCMR-5
Dibromochloromethane
24.7 µg/L
No EPA limit set
 6/6 SYR4
Selenium
22.5 µg/L 45%
of the EPA limit 50 µg/L
 1/6 SYR4
Bromodichloromethane
18.4 µg/L
No EPA limit set
 6/6 SYR4
Gross Beta Particle Activity
17.4 pCi/L
No EPA limit set
 2/6 SYR4
Total Haloacetic Acids (HAA5)
13.6 µg/L 23%
of the EPA limit 60 µg/L
 6/6 SYR4
Tetrachloroethylene
11.4 µg/L 228%
of the EPA limit, in the worst sample — 5 µg/L
 1/6 SYR4
Dichloroacetic Acid
9.2 µg/L
No EPA limit set
 4/6 SYR4
Chromium
8.8 µg/L 8.8%
of the EPA limit 100 µg/L
 1/6 SYR4
Gross Alpha, Excl. Radon And U
7.71 pCi/L 51%
of the EPA limit 15 pCi/L
 3/6 SYR4
Arsenic
6.3 µg/L 63%
of the EPA limit 10 µg/L
 2/6 SYR4
Dibromoacetic Acid
5.44 µg/L
No EPA limit set
 6/6 SYR4
Combined Uranium
3.88 µg/L 13%
of the EPA limit 30 µg/L
 2/6 SYR4
Trichloroacetic Acid
3.14 µg/L
No EPA limit set
 2/6 SYR4
Monobromoacetic Acid
2.6 µg/L
No EPA limit set
 1/6 SYR4
Combined Radium (-226 And -228)
2.31 pCi/L 46%
of the EPA limit 5 pCi/L
 2/6 SYR4
Thallium, Total
1 µg/L 50%
of the EPA limit 2 µg/L
 1/6 SYR4
1,2-Dichloroethane
0.6100 µg/L 12%
of the EPA limit 5 µg/L
 1/6 SYR4
Lead
0.0107 mg/L 71%
of the EPA limit 0.0150 mg/L
 6/6 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 Enid

SupplierPopulation served
ENID 49,347
VANCE AFB 3,231
HIGHPOINT MHP 600
GARFIELD CO RWD # 4 334
GARFIELD CO RWD #7 288
BRECKINRIDGE PWA 239

Frequently asked questions about Enid tap water

Is Enid tap water safe to drink?

EPA testing detected 28 contaminants in the water serving Enid. 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 Enid?

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

What contaminants are in Enid's water?

The contaminants EPA monitoring detected in Enid include Nitrate-Nitrite, Nitrate, Copper, Fluoride, Barium. 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.