What was found in ZIP 74937
The level at this ZIP's main supplier, the highest level anywhere in it, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate-Nitrite | 1337.5 µg/L 13% of the EPA limit 10000 µg/L Highest in the ZIP: HEAVENER UTILITY AUTH - PSG · 3,000 people · 2019 | 1/2 | SYR4 |
| Fluoride | 996 µg/L 25% of the EPA limit 4000 µg/L Highest in the ZIP: HEAVENER UTILITY AUTH - PSG · 3,000 people · 2018 | 1/2 | SYR4 |
| Copper | 201.9 µg/L 16% of the EPA limit 1300 µg/L Main supplier: LEFLORE CO. RWD #18 · 3,870 people · 2018
Highest in the ZIP: 808.404 µg/L — HEAVENER UTILITY AUTH - PSG · 3,000 people · 2019 | 2/2 | SYR4 |
| Nitrate | 740 µg/L 7.4% of the EPA limit 10000 µg/L Highest in the ZIP: HEAVENER UTILITY AUTH - PSG · 3,000 people · 2013 | 1/2 | SYR4 |
| TTHM | 118.7 µg/L 148% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: LEFLORE CO. RWD #18 · 3,870 people · 2019 | 2/2 | SYR4 |
| Chloroform | 104.85 µg/L No EPA limit set Main supplier: LEFLORE CO. RWD #18 · 3,870 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 77.52 µg/L 129% of the EPA limit, at the 95th percentile of samples — 60 µg/L Main supplier: LEFLORE CO. RWD #18 · 3,870 people · 2019 | 2/2 | SYR4 |
| Lead | 64.0792 µg/L 427% of the EPA limit, at the 95th percentile of samples — 15 µg/L Highest in the ZIP: HEAVENER UTILITY AUTH - PSG · 3,000 people · 2019 | 1/2 | SYR4 |
| Dichloroacetic Acid | 41.98 µg/L No EPA limit set Main supplier: LEFLORE CO. RWD #18 · 3,870 people · 2019
Highest in the ZIP: 42.6 µg/L — HEAVENER UTILITY AUTH - PSG · 3,000 people · 2019 | 2/2 | SYR4 |
| Trichloroacetic Acid | 30.525 µg/L No EPA limit set Main supplier: LEFLORE CO. RWD #18 · 3,870 people · 2019 | 2/2 | SYR4 |
| Barium | 23.5 µg/L 1.2% of the EPA limit 2000 µg/L Highest in the ZIP: HEAVENER UTILITY AUTH - PSG · 3,000 people · 2013 | 1/2 | SYR4 |
| Bromodichloromethane | 11.8 µg/L No EPA limit set Main supplier: LEFLORE CO. RWD #18 · 3,870 people · 2019
Highest in the ZIP: 17.62 µg/L — HEAVENER UTILITY AUTH - PSG · 3,000 people · 2019 | 2/2 | SYR4 |
| Monochloroacetic Acid | 8.808 µg/L No EPA limit set Main supplier: LEFLORE CO. RWD #18 · 3,870 people · 2019 | 2/2 | SYR4 |
| Selenium | 5.7 µg/L 11% of the EPA limit 50 µg/L Highest in the ZIP: HEAVENER UTILITY AUTH - PSG · 3,000 people · 2014 | 1/2 | SYR4 |
| Dibromochloromethane | 2.9135 µg/L No EPA limit set Main supplier: LEFLORE CO. RWD #18 · 3,870 people · 2019
Highest in the ZIP: 5.581 µg/L — HEAVENER UTILITY AUTH - PSG · 3,000 people · 2019 | 2/2 | SYR4 |
| Monobromoacetic Acid | 5.015 µg/L No EPA limit set Highest in the ZIP: HEAVENER UTILITY AUTH - PSG · 3,000 people · 2019 | 1/2 | SYR4 |
| Gross Beta Particle Activity | 3.225 pCi/L No EPA limit set Highest in the ZIP: HEAVENER UTILITY AUTH - PSG · 3,000 people · 2019 | 1/2 | SYR4 |
| Dibromoacetic Acid | 1.364 µg/L No EPA limit set Main supplier: LEFLORE CO. RWD #18 · 3,870 people · 2019 | 2/2 | SYR4 |
| Thallium, Total | 1 µg/L 50% of the EPA limit 2 µg/L Highest in the ZIP: HEAVENER UTILITY AUTH - PSG · 3,000 people · 2013 | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 0.9735 pCi/L 19% of the EPA limit 5 pCi/L Highest in the ZIP: HEAVENER UTILITY AUTH - PSG · 3,000 people · 2019 | 1/2 | SYR4 |
| Bromoform | 0.6100 µg/L No EPA limit set Highest in the ZIP: HEAVENER UTILITY AUTH - PSG · 3,000 people · 2019 | 1/2 | SYR4 |
| Pfba | 0.0088 µg/L No EPA limit set Highest in the ZIP: HEAVENER UTILITY AUTH - PSG · 3,000 people · 2024 | 1/2 | UCMR-5 |
| Combined Uranium | 0.0013 µg/L 0% of the EPA limit 30 µg/L Highest in the ZIP: HEAVENER UTILITY AUTH - PSG · 3,000 people · 2019 | 1/2 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: LEFLORE CO. RWD #18 · 3,870 people · 2023
Highest in the ZIP: 0.0011 mg/L — HEAVENER UTILITY AUTH - PSG · 3,000 people · 2025 | 2/2 | 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.
Water suppliers serving ZIP 74937
| Supplier | State | Population served |
|---|---|---|
| LEFLORE CO. RWD #18 | OK | 3,870 |
| HEAVENER UTILITY AUTH - PSG | OK | 3,000 |
Frequently asked questions about ZIP 74937 tap water
Is the tap water in ZIP 74937 safe to drink?
EPA testing detected 24 contaminants across the water suppliers serving ZIP 74937. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.
Which water suppliers serve ZIP 74937?
2 public water suppliers report EPA drinking-water monitoring for ZIP 74937. Each is listed above with its population served.
What contaminants are in ZIP 74937's water?
EPA monitoring detected Nitrate-Nitrite, Fluoride, Copper, Nitrate, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.