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.
681
health-based violations
1,841
violations on file
0
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| TT | Health-based | Archived | 2025-10-01 → 2025-12-31 |
| TT | Health-based | Archived | 2025-10-01 → 2025-12-31 |
| TT | Health-based | Archived | 2025-10-01 → 2025-12-31 |
| MCL | Health-based | Archived | 2025-10-01 → 2025-12-31 |
| MCL | Health-based | Archived | 2025-10-01 → 2025-12-31 |
| MCL | Health-based | Archived | 2025-10-01 → 2025-12-31 |
| MCL | Health-based | Archived | 2025-10-01 → 2025-12-31 |
| MCL | Health-based | Archived | 2025-10-01 → 2025-12-31 |
| MCL | Health-based | Archived | 2025-10-01 → 2025-12-31 |
| MCL | Health-based | Archived | 2025-10-01 → 2025-12-31 |
PFAS detected
PFAS are industrial “forever chemicals”. These are the EPA's latest
nationwide test results (2023–2025).
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 | 169.25 µg/L 212% of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 245 µg/L | 124/144 | SYR4 | 2012–2019 |
| Dibromochloromethane | 28.04 µg/L No EPA limit set
worst single sample: 44.2 µg/L | 123/193 | SYR4 | 2012–2019 |
| Bromodichloromethane | 40.44 µg/L No EPA limit set
worst single sample: 61.2 µg/L | 120/193 | SYR4 | 2012–2019 |
| Chloroform | 97.31 µg/L No EPA limit set
worst single sample: 211 µg/L | 120/193 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 104.4 µg/L 174% of the EPA limit, at the 95th percentile of samples — 60 µg/L
worst single sample: 203 µg/L | 117/144 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 45.81 µg/L No EPA limit set
worst single sample: 83.4 µg/L | 103/132 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 56.21 µg/L No EPA limit set
worst single sample: 115 µg/L | 103/132 | SYR4 | 2012–2019 |
| Bromoform | 7.055 µg/L No EPA limit set
worst single sample: 12.3 µg/L | 87/193 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 6.296 µg/L No EPA limit set
worst single sample: 8.03 µg/L | 84/132 | SYR4 | 2012–2019 |
| Chlorite | 824 µg/L 82% of the EPA limit 1000 µg/L
worst single sample: 1900 µg/L | 77/87 | SYR4 | 2012–2016 |
| Copper | 240.05 µg/L 18% of the EPA limit 1300 µg/L
worst single sample: 344 µg/L | 72/90 | SYR4 | 2012–2018 |
| Nitrate-Nitrite | 2812.5 µg/L 28% of the EPA limit 10000 µg/L
worst single sample: 3150 µg/L | 66/164 | SYR4 | 2012–2019 |
| Gross Beta Particle Activity | 7.316 pCi/L No EPA limit set
worst single sample: 8.02 pCi/L | 28/47 | SYR4 | 2012–2019 |
| Monobromoacetic Acid | 3.2585 µg/L No EPA limit set
worst single sample: 4.22 µg/L | 28/132 | SYR4 | 2012–2019 |
| Combined Radium (-226 And -228) | 3.2225 pCi/L 64% of the EPA limit 5 pCi/L
worst single sample: 3.89 pCi/L | 26/47 | SYR4 | 2012–2019 |
| Gross Alpha, Excl. Radon And U | 9.64 pCi/L 64% of the EPA limit 15 pCi/L
worst single sample: 14.5 pCi/L | 24/47 | SYR4 | 2012–2019 |
| Barium | 136 µg/L 6.8% of the EPA limit 2000 µg/L
worst single sample: 141 µg/L | 21/21 | SYR4 | 2012–2019 |
| Monochloroacetic Acid | 6.74 µg/L No EPA limit set
worst single sample: 11.3 µg/L | 21/132 | SYR4 | 2012–2019 |
| Fluoride | 933.5 µg/L 23% of the EPA limit 4000 µg/L
worst single sample: 1000 µg/L | 20/21 | SYR4 | 2012–2019 |
| Lithium | 46.4 µg/L No EPA limit set | 18/26 | UCMR-5 | 2025 |
| Lead | 0.0029 mg/L 20% of the EPA limit 0.0150 mg/L | 17/17 | LCR | 2024 |
| Combined Uranium | 4.673 µg/L 16% of the EPA limit 30 µg/L
worst single sample: 5.45 µg/L | 8/47 | SYR4 | 2012–2019 |
| Lead | 30.54 µg/L 204% of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 30.9 µg/L | 3/90 | SYR4 | 2012–2018 |
| Arsenic | 4.622 µg/L 46% of the EPA limit 10 µg/L
worst single sample: 4.76 µg/L | 2/26 | SYR4 | 2012–2019 |
| Chromium | 3.95 µg/L 4% of the EPA limit 100 µg/L
worst single sample: 4.1 µg/L | 2/21 | SYR4 | 2012–2019 |
| Selenium | 1 µg/L 2% of the EPA limit 50 µg/L | 2/21 | SYR4 | 2012–2019 |
| Toluene | 0.9345 µg/L 0.1% of the EPA limit 1000 µg/L
worst single sample: 0.9500 µg/L | 2/70 | SYR4 | 2012–2019 |
| Mercury | 0.2140 µg/L 11% of the EPA limit 2 µg/L | 1/21 | SYR4 | 2012–2019 |
79 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 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMethoxychlorNetfosaaNfdhaNmefosaaOxamylPFBSPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Southern Okla Water Corp
Is Southern Okla Water Corp tap water safe to drink?
EPA monitoring detected 32 contaminants in Southern Okla Water Corp'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 Southern Okla Water Corp's water?
EPA monitoring detected TTHM, Dibromochloromethane, Bromodichloromethane, Chloroform, Total Haloacetic Acids (HAA5), and others. The full list with the level and data source for each is above.
How many people does Southern Okla Water Corp serve?
Southern Okla Water Corp reports serving 11,250 people in Oklahoma, per its EPA record.
Has Southern Okla Water Corp had any water quality violations?
The EPA has 1841 violations on file for Southern Okla Water Corp, of which 681 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.