What was found in Wynnewood's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate-Nitrite | 450 µg/L 4.5% of the EPA limit 10000 µg/L Main supplier: WYNNEWOOD WATER & LIGHT · 2,307 people · 2019
Highest in the city: 2053 µg/L — GARVIN CO RWD # 6 (WELLS) · 1,680 people · 2019 | 2/3 | SYR4 |
| Copper | 889.636 µg/L 68% of the EPA limit 1300 µg/L Main supplier: WYNNEWOOD WATER & LIGHT · 2,307 people · 2019
Highest in the city: 1704.5 µg/L — GARVIN CO RWD #6 (SW PURCHASE) · 862 people · 2019 | 3/3 | SYR4 |
| Barium | 313.25 µg/L 16% of the EPA limit 2000 µg/L Highest in the city: GARVIN CO RWD # 6 (WELLS) · 1,680 people · 2018 | 1/3 | SYR4 |
| Fluoride | 267 µg/L 6.7% of the EPA limit 4000 µg/L Highest in the city: GARVIN CO RWD # 6 (WELLS) · 1,680 people · 2018 | 1/3 | SYR4 |
| TTHM | 128.16 µg/L 160% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: WYNNEWOOD WATER & LIGHT · 2,307 people · 2019
Highest in the city: 194.16 µg/L — GARVIN CO RWD #6 (SW PURCHASE) · 862 people · 2019 | 3/3 | SYR4 |
| Chloroform | 100.16 µg/L No EPA limit set Main supplier: WYNNEWOOD WATER & LIGHT · 2,307 people · 2019
Highest in the city: 153.65 µg/L — GARVIN CO RWD #6 (SW PURCHASE) · 862 people · 2019 | 2/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 73.05 µg/L 122% of the EPA limit, at the 95th percentile of samples — 60 µg/L Main supplier: WYNNEWOOD WATER & LIGHT · 2,307 people · 2019 | 3/3 | SYR4 |
| Trichloroacetic Acid | 46.21 µg/L No EPA limit set Main supplier: WYNNEWOOD WATER & LIGHT · 2,307 people · 2019 | 2/3 | SYR4 |
| Bromodichloromethane | 31.32 µg/L No EPA limit set Main supplier: WYNNEWOOD WATER & LIGHT · 2,307 people · 2019
Highest in the city: 40.075 µg/L — GARVIN CO RWD #6 (SW PURCHASE) · 862 people · 2019 | 3/3 | SYR4 |
| Dibromochloromethane | 24.44 µg/L No EPA limit set Main supplier: WYNNEWOOD WATER & LIGHT · 2,307 people · 2019
Highest in the city: 31.355 µg/L — GARVIN CO RWD #6 (SW PURCHASE) · 862 people · 2019 | 3/3 | SYR4 |
| Dichloroacetic Acid | 29.26 µg/L No EPA limit set Main supplier: WYNNEWOOD WATER & LIGHT · 2,307 people · 2019 | 2/3 | SYR4 |
| Lead | 5.75 µg/L 38% of the EPA limit 15 µg/L Main supplier: WYNNEWOOD WATER & LIGHT · 2,307 people · 2019
Highest in the city: 13.16 µg/L — GARVIN CO RWD #6 (SW PURCHASE) · 862 people · 2019 | 3/3 | SYR4 |
| Monobromoacetic Acid | 9.543 µg/L No EPA limit set Main supplier: WYNNEWOOD WATER & LIGHT · 2,307 people · 2019 | 2/3 | SYR4 |
| Bromoform | 8.652 µg/L No EPA limit set Main supplier: WYNNEWOOD WATER & LIGHT · 2,307 people · 2019
Highest in the city: 9.04 µg/L — GARVIN CO RWD #6 (SW PURCHASE) · 862 people · 2019 | 3/3 | SYR4 |
| Dibromoacetic Acid | 7.657 µg/L No EPA limit set Main supplier: WYNNEWOOD WATER & LIGHT · 2,307 people · 2019 | 3/3 | SYR4 |
| Monochloroacetic Acid | 4.0445 µg/L No EPA limit set Main supplier: WYNNEWOOD WATER & LIGHT · 2,307 people · 2019 | 2/3 | SYR4 |
| Arsenic | 2.675 µg/L 27% of the EPA limit 10 µg/L Highest in the city: GARVIN CO RWD # 6 (WELLS) · 1,680 people · 2018 | 1/3 | SYR4 |
| Gross Alpha, Excl. Radon And U | 2.3141 pCi/L 15% of the EPA limit 15 pCi/L Highest in the city: GARVIN CO RWD # 6 (WELLS) · 1,680 people · 2019 | 1/3 | SYR4 |
| Combined Uranium | 2.03 µg/L 6.8% of the EPA limit 30 µg/L Highest in the city: GARVIN CO RWD # 6 (WELLS) · 1,680 people · 2019 | 1/3 | SYR4 |
| Lead | 0.0012 mg/L 7.9% of the EPA limit 0.0150 mg/L Main supplier: WYNNEWOOD WATER & LIGHT · 2,307 people · 2025
Highest in the city: 0.0062 mg/L — GARVIN CO RWD # 6 (WELLS) · 1,680 people · 2025 | 3/3 | 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 95th percentile of the
system's samples — 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 Wynnewood
| Supplier | Population served |
|---|---|
| WYNNEWOOD WATER & LIGHT | 2,307 |
| GARVIN CO RWD # 6 (WELLS) | 1,680 |
| GARVIN CO RWD #6 (SW PURCHASE) | 862 |
Frequently asked questions about Wynnewood tap water
Is Wynnewood tap water safe to drink?
EPA testing detected 20 contaminants in the water serving Wynnewood. 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 Wynnewood?
3 public water suppliers report drinking-water monitoring for Wynnewood, Oklahoma to the EPA. Each is listed above with its population served.
What contaminants are in Wynnewood's water?
The contaminants EPA monitoring detected in Wynnewood include Nitrate-Nitrite, Copper, Barium, Fluoride, TTHM. The full list, with the level at the main supplier 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.