What was found in ZIP 74955
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 | 1800 µg/L 18% of the EPA limit 10000 µg/L Main supplier: SEQUOYAH CO. RWD #8 · 13,460 people · 2019 | 2/2 | SYR4 |
| Fluoride | 120 µg/L 3% of the EPA limit 4000 µg/L Main supplier: SEQUOYAH CO. RWD #8 · 13,460 people · 2018
Highest in the ZIP: 1060 µg/L — SALLISAW · 8,510 people · 2019 | 2/2 | SYR4 |
| Copper | 112.8 µg/L 8.7% of the EPA limit 1300 µg/L Main supplier: SEQUOYAH CO. RWD #8 · 13,460 people · 2018
Highest in the ZIP: 167.8 µg/L — SALLISAW · 8,510 people · 2018 | 2/2 | SYR4 |
| TTHM | 76.155 µg/L 95% of the EPA limit 80 µg/L Main supplier: SEQUOYAH CO. RWD #8 · 13,460 people · 2019
Highest in the ZIP: 91.835 µg/L — SALLISAW · 8,510 people · 2019 | 2/2 | SYR4 |
| Chloroform | 60.525 µg/L No EPA limit set Main supplier: SEQUOYAH CO. RWD #8 · 13,460 people · 2019
Highest in the ZIP: 83.885 µg/L — SALLISAW · 8,510 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 33.53 µg/L 56% of the EPA limit 60 µg/L Main supplier: SEQUOYAH CO. RWD #8 · 13,460 people · 2019
Highest in the ZIP: 53.535 µg/L — SALLISAW · 8,510 people · 2019 | 2/2 | SYR4 |
| Barium | 38.55 µg/L 1.9% of the EPA limit 2000 µg/L Main supplier: SEQUOYAH CO. RWD #8 · 13,460 people · 2018 | 2/2 | SYR4 |
| Trichloroacetic Acid | 13.695 µg/L No EPA limit set Main supplier: SEQUOYAH CO. RWD #8 · 13,460 people · 2019
Highest in the ZIP: 29.8 µg/L — SALLISAW · 8,510 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 23.245 µg/L No EPA limit set Main supplier: SEQUOYAH CO. RWD #8 · 13,460 people · 2019
Highest in the ZIP: 28 µg/L — SALLISAW · 8,510 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 13.5 µg/L No EPA limit set Main supplier: SEQUOYAH CO. RWD #8 · 13,460 people · 2019 | 2/2 | SYR4 |
| Lead | 10.32 µg/L 69% of the EPA limit 15 µg/L Main supplier: SEQUOYAH CO. RWD #8 · 13,460 people · 2018
Highest in the ZIP: 13.1 µg/L — SALLISAW · 8,510 people · 2018 | 2/2 | SYR4 |
| Monochloroacetic Acid | 4.011 µg/L No EPA limit set Main supplier: SEQUOYAH CO. RWD #8 · 13,460 people · 2019
Highest in the ZIP: 7.111 µg/L — SALLISAW · 8,510 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 5.433 µg/L No EPA limit set Main supplier: SEQUOYAH CO. RWD #8 · 13,460 people · 2019 | 2/2 | SYR4 |
| Dalapon | 4.02 µg/L 2% of the EPA limit 200 µg/L Highest in the ZIP: SALLISAW · 8,510 people · 2018 | 1/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 3.33 pCi/L 22% of the EPA limit 15 pCi/L Main supplier: SEQUOYAH CO. RWD #8 · 13,460 people · 2019 | 2/2 | SYR4 |
| Gross Beta Particle Activity | 3.03 pCi/L No EPA limit set Main supplier: SEQUOYAH CO. RWD #8 · 13,460 people · 2019 | 2/2 | SYR4 |
| Dibromoacetic Acid | 1.358 µg/L No EPA limit set Main supplier: SEQUOYAH CO. RWD #8 · 13,460 people · 2019 | 2/2 | SYR4 |
| Monobromoacetic Acid | 1.05 µg/L No EPA limit set Highest in the ZIP: SALLISAW · 8,510 people · 2019 | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 0.7820 pCi/L 16% of the EPA limit 5 pCi/L Main supplier: SEQUOYAH CO. RWD #8 · 13,460 people · 2019 | 2/2 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: SEQUOYAH CO. RWD #8 · 13,460 people · 2024
Highest in the ZIP: 0.0011 mg/L — SALLISAW · 8,510 people · 2024 | 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 74955
| Supplier | State | Population served |
|---|---|---|
| SEQUOYAH CO. RWD #8 | OK | 13,460 |
| SALLISAW | OK | 8,510 |
Frequently asked questions about ZIP 74955 tap water
Is the tap water in ZIP 74955 safe to drink?
EPA testing detected 20 contaminants across the water suppliers serving ZIP 74955. 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 74955?
2 public water suppliers report EPA drinking-water monitoring for ZIP 74955. Each is listed above with its population served.
What contaminants are in ZIP 74955's water?
EPA monitoring detected Nitrate-Nitrite, Fluoride, Copper, TTHM, Chloroform, and others across this ZIP's suppliers. The full list with levels and sources is above.