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.
42
health-based violations
97
violations on file
3
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| MCL | Health-based | Resolved | 2014-10-01 → 2014-12-31 |
| MCL | Health-based | Resolved | 2014-10-01 → 2014-12-31 |
| MCL | Health-based | Resolved | 2014-10-01 → 2014-12-31 |
| MCL | Health-based | Resolved | 2014-10-01 → 2014-12-31 |
| MCL | Health-based | Resolved | 2014-07-01 → 2014-09-30 |
| MCL | Health-based | Resolved | 2014-07-01 → 2014-09-30 |
| MCL | Health-based | Resolved | 2014-07-01 → 2014-09-30 |
| MCL | Health-based | Resolved | 2014-07-01 → 2014-09-30 |
| TT | Health-based | Resolved | 2004-10-01 → 2004-12-31 |
| TT | Health-based | Resolved | 2004-10-01 → 2004-12-31 |
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 |
|---|---|---|---|---|
| TTHM | 100.925 µg/L 126% of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 182 µg/L | 206/257 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 421.5 µg/L 4.2% of the EPA limit 10000 µg/L
worst single sample: 500 µg/L | 198/198 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 34.45 µg/L 57% of the EPA limit 60 µg/L
worst single sample: 54 µg/L | 191/256 | SYR4 | 2012–2019 |
| Chloroform | 50.475 µg/L No EPA limit set
worst single sample: 104 µg/L | 164/205 | SYR4 | 2013–2019 |
| Bromodichloromethane | 29.2 µg/L No EPA limit set
worst single sample: 59.8 µg/L | 161/205 | SYR4 | 2013–2019 |
| Dibromochloromethane | 14.16 µg/L No EPA limit set
worst single sample: 31.9 µg/L | 153/205 | SYR4 | 2013–2019 |
| Dichloroacetic Acid | 14.25 µg/L No EPA limit set
worst single sample: 22 µg/L | 151/200 | SYR4 | 2013–2019 |
| Trichloroacetic Acid | 17.05 µg/L No EPA limit set
worst single sample: 25.8 µg/L | 138/200 | SYR4 | 2013–2019 |
| Copper | 240.4 µg/L 18% of the EPA limit 1300 µg/L
worst single sample: 500 µg/L | 119/122 | SYR4 | 2013–2019 |
| Bromoform | 3.1215 µg/L No EPA limit set
worst single sample: 3.5 µg/L | 72/205 | SYR4 | 2013–2019 |
| Dibromoacetic Acid | 2.938 µg/L No EPA limit set
worst single sample: 3.35 µg/L | 68/200 | SYR4 | 2013–2019 |
| Chlorite | 233.8 µg/L 23% of the EPA limit 1000 µg/L
worst single sample: 270 µg/L | 45/96 | SYR4 | 2012–2019 |
| Barium | 514.2 µg/L 26% of the EPA limit 2000 µg/L
worst single sample: 535 µg/L | 33/33 | SYR4 | 2012–2018 |
| Lithium | 17.4 µg/L No EPA limit set | 22/26 | UCMR-5 | 2025 |
| Lead | 0.0012 mg/L 8% of the EPA limit 0.0150 mg/L | 20/20 | LCR | 2025 |
| Gross Alpha, Excl. Radon And U | 7.2225 pCi/L 48% of the EPA limit 15 pCi/L
worst single sample: 7.41 pCi/L | 16/21 | SYR4 | 2012–2018 |
| Combined Radium (-226 And -228) | 2.6435 pCi/L 53% of the EPA limit 5 pCi/L
worst single sample: 2.88 pCi/L | 12/21 | SYR4 | 2012–2018 |
| Chromium | 15.5 µg/L 16% of the EPA limit 100 µg/L
worst single sample: 17.5 µg/L | 11/35 | SYR4 | 2012–2018 |
| Gross Beta Particle Activity | 4.14 pCi/L No EPA limit set
worst single sample: 4.55 pCi/L | 11/21 | SYR4 | 2012–2018 |
| Fluoride | 959 µg/L 24% of the EPA limit 4000 µg/L
worst single sample: 980 µg/L | 7/43 | SYR4 | 2012–2018 |
| Combined Uranium | 3.66 µg/L 12% of the EPA limit 30 µg/L
worst single sample: 3.8 µg/L | 5/21 | SYR4 | 2012–2018 |
| Lead | 17.18 µg/L 115% of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 18.6 µg/L | 5/122 | SYR4 | 2013–2019 |
| Monochloroacetic Acid | 3.33 µg/L No EPA limit set
worst single sample: 3.46 µg/L | 5/200 | SYR4 | 2013–2019 |
| Monobromoacetic Acid | 1.133 µg/L No EPA limit set
worst single sample: 1.14 µg/L | 3/200 | SYR4 | 2013–2019 |
| Dalapon | 1.64 µg/L 0.8% of the EPA limit 200 µg/L | 1/66 | SYR4 | 2018–2019 |
86 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, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromateChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Midwest City
Is Midwest City tap water safe to drink?
EPA monitoring detected 25 contaminants in Midwest City'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 Midwest City's water?
EPA monitoring detected TTHM, Nitrate-Nitrite, Total Haloacetic Acids (HAA5), Chloroform, Bromodichloromethane, and others. The full list with the level and data source for each is above.
How many people does Midwest City serve?
Midwest City reports serving 55,935 people in Oklahoma, per its EPA record.
Has Midwest City had any water quality violations?
The EPA has 97 violations on file for Midwest City, of which 42 are health-based (a contaminant limit or required treatment was breached) and 3 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.