What was found in Sallisaw'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 | 1800 µg/L 18% of the EPA limit 10000 µg/L Main supplier: SEQUOYAH CO. RWD #8 · 13,460 people · 2019 | 2/4 | 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 city: 1060 µg/L — SALLISAW · 8,510 people · 2019 | 2/4 | 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 city: 167.8 µg/L — SALLISAW · 8,510 people · 2018 | 4/4 | 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 city: 94.62 µg/L — SEQUOYAH CO. RWD #3 · 1,040 people · 2019 | 4/4 | SYR4 |
| Chloroform | 60.525 µg/L No EPA limit set Main supplier: SEQUOYAH CO. RWD #8 · 13,460 people · 2019
Highest in the city: 84.22 µg/L — SEQUOYAH CO. RWD #3 · 1,040 people · 2019 | 4/4 | 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 city: 53.535 µg/L — SALLISAW · 8,510 people · 2019 | 4/4 | 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 | 2/4 | SYR4 |
| Trichloroacetic Acid | 13.695 µg/L No EPA limit set Main supplier: SEQUOYAH CO. RWD #8 · 13,460 people · 2019
Highest in the city: 29.8 µg/L — SALLISAW · 8,510 people · 2019 | 4/4 | SYR4 |
| Dichloroacetic Acid | 23.245 µg/L No EPA limit set Main supplier: SEQUOYAH CO. RWD #8 · 13,460 people · 2019
Highest in the city: 28 µg/L — SALLISAW · 8,510 people · 2019 | 4/4 | 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 city: 22.96 µg/L — SEQUOYAH CO. RWD #3 · 1,040 people · 2017 | 4/4 | SYR4 |
| Bromodichloromethane | 13.5 µg/L No EPA limit set Main supplier: SEQUOYAH CO. RWD #8 · 13,460 people · 2019 | 4/4 | SYR4 |
| Monochloroacetic Acid | 4.011 µg/L No EPA limit set Main supplier: SEQUOYAH CO. RWD #8 · 13,460 people · 2019
Highest in the city: 7.216 µg/L — SEQUOYAH CO. RWD #4 · 1,750 people · 2019 | 4/4 | SYR4 |
| Dibromochloromethane | 5.433 µg/L No EPA limit set Main supplier: SEQUOYAH CO. RWD #8 · 13,460 people · 2019 | 4/4 | SYR4 |
| Dalapon | 4.02 µg/L 2% of the EPA limit 200 µg/L Highest in the city: SALLISAW · 8,510 people · 2018 | 1/4 | 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 | 2/4 | SYR4 |
| Gross Beta Particle Activity | 3.03 pCi/L No EPA limit set Main supplier: SEQUOYAH CO. RWD #8 · 13,460 people · 2019 | 2/4 | SYR4 |
| Dibromoacetic Acid | 1.358 µg/L No EPA limit set Main supplier: SEQUOYAH CO. RWD #8 · 13,460 people · 2019 | 4/4 | SYR4 |
| Monobromoacetic Acid | 1.05 µg/L No EPA limit set Highest in the city: SALLISAW · 8,510 people · 2019 | 1/4 | 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 | 2/4 | 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 city: 0.0015 mg/L — SEQUOYAH CO. RWD #3 · 1,040 people · 2024 | 4/4 | 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 Sallisaw
| Supplier | Population served |
|---|---|
| SEQUOYAH CO. RWD #8 | 13,460 |
| SALLISAW | 8,510 |
| SEQUOYAH CO. RWD #4 | 1,750 |
| SEQUOYAH CO. RWD #3 | 1,040 |
Frequently asked questions about Sallisaw tap water
Is Sallisaw tap water safe to drink?
EPA testing detected 20 contaminants in the water serving Sallisaw. 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 Sallisaw?
4 public water suppliers report drinking-water monitoring for Sallisaw, Oklahoma to the EPA. Each is listed above with its population served.
What contaminants are in Sallisaw's water?
The contaminants EPA monitoring detected in Sallisaw include Nitrate-Nitrite, Fluoride, Copper, TTHM, Chloroform. 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.