Compliance record
Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.
11
health-based violations
80
violations on file
0
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| TT | Health-based | Resolved | 2024-10-17 |
| TT | Health-based | Resolved | 2024-10-17 |
| MCL | Health-based | Resolved | 2013-05-01 → 2013-05-31 |
| MCL | Health-based | Resolved | 2013-05-01 → 2013-05-31 |
| MCL | Health-based | Resolved | 2013-05-01 → 2013-05-31 |
| MCL | Health-based | Resolved | 2013-05-01 → 2013-05-31 |
| MCL | Health-based | Resolved | 1996-05-01 → 1996-05-31 |
| MCL | Health-based | Resolved | 1993-05-01 → 1993-05-31 |
| MCL | Health-based | Resolved | 1993-03-01 → 1993-03-31 |
| MCL | Health-based | Resolved | 1992-06-01 → 1992-06-30 |
Other contaminants detected
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 95th percentile of this
system's samples — over 100% is worth reading, but is not by itself a
violation. Where a single sample came in higher than that percentile, it
is noted under the bar. Formal violations are listed separately.
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Copper | 877.35 µg/L 67% of the EPA limit 1300 µg/L
worst single sample: 1650 µg/L | 92/96 | SYR4 | 2012–2018 |
| Bromoform | 10.855 µg/L No EPA limit set
worst single sample: 46.7 µg/L | 50/53 | SYR4 | 2012–2019 |
| Dibromochloromethane | 18.435 µg/L No EPA limit set
worst single sample: 24.7 µg/L | 50/53 | SYR4 | 2012–2019 |
| TTHM | 63.19 µg/L 79% of the EPA limit 80 µg/L
worst single sample: 89.1 µg/L | 47/47 | SYR4 | 2012–2019 |
| Bromodichloromethane | 15.525 µg/L No EPA limit set
worst single sample: 18.4 µg/L | 46/53 | SYR4 | 2012–2019 |
| Nitrate | 9210 µg/L 92% of the EPA limit 10000 µg/L
worst single sample: 9480 µg/L | 42/42 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 9.897 µg/L 16% of the EPA limit 60 µg/L
worst single sample: 13.6 µg/L | 35/47 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 4.189 µg/L No EPA limit set
worst single sample: 5.44 µg/L | 27/35 | SYR4 | 2012–2019 |
| Chloroform | 16.275 µg/L No EPA limit set
worst single sample: 52.1 µg/L | 22/53 | SYR4 | 2012–2019 |
| Combined Uranium | 3.637 µg/L 12% of the EPA limit 30 µg/L
worst single sample: 3.88 µg/L | 19/19 | SYR4 | 2013–2018 |
| Gross Beta Particle Activity | 5.893 pCi/L No EPA limit set
worst single sample: 7.54 pCi/L | 19/19 | SYR4 | 2013–2018 |
| Nitrate-Nitrite | 8724 µg/L 87% of the EPA limit 10000 µg/L
worst single sample: 9480 µg/L | 19/19 | SYR4 | 2012–2019 |
| Combined Radium (-226 And -228) | 1.99 pCi/L 40% of the EPA limit 5 pCi/L
worst single sample: 2.31 pCi/L | 17/19 | SYR4 | 2013–2018 |
| Gross Alpha, Excl. Radon And U | 4.0675 pCi/L 27% of the EPA limit 15 pCi/L
worst single sample: 4.54 pCi/L | 16/19 | SYR4 | 2013–2018 |
| Dichloroacetic Acid | 6.358 µg/L No EPA limit set
worst single sample: 9.2 µg/L | 15/35 | SYR4 | 2012–2019 |
| Lead | 0.0051 mg/L 34% of the EPA limit 0.0150 mg/L | 15/15 | LCR | 2024 |
| Lithium | 36.5 µg/L No EPA limit set | 10/10 | UCMR-5 | 2024 |
| Barium | 378.8 µg/L 19% of the EPA limit 2000 µg/L
worst single sample: 381 µg/L | 5/5 | SYR4 | 2013–2017 |
| Fluoride | 740 µg/L 19% of the EPA limit 4000 µg/L
worst single sample: 760 µg/L | 5/5 | SYR4 | 2013–2017 |
| Monobromoacetic Acid | 2.346 µg/L No EPA limit set
worst single sample: 2.6 µg/L | 5/35 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 3.02 µg/L No EPA limit set
worst single sample: 3.14 µg/L | 5/35 | SYR4 | 2012–2019 |
| Lead | 20.57 µg/L 137% of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 21.6 µg/L | 3/96 | SYR4 | 2012–2018 |
| Arsenic | 5.095 µg/L 51% of the EPA limit 10 µg/L
worst single sample: 5.1 µg/L | 2/6 | SYR4 | 2012–2017 |
89 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Enid
Is Enid tap water safe to drink?
EPA monitoring detected 23 contaminants in Enid's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.
What contaminants were detected in Enid's water?
EPA monitoring detected Copper, Bromoform, Dibromochloromethane, TTHM, Bromodichloromethane, and others. The full list with the level and data source for each is above.
How many people does Enid serve?
Enid reports serving 49,347 people in Oklahoma, per its EPA record.
Has Enid had any water quality violations?
The EPA has 80 violations on file for Enid, of which 11 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.
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.