What was found in Checotah'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 |
|---|---|---|---|
| Chlorite | 651.2 µg/L 65% of the EPA limit 1000 µg/L Main supplier: CHECOTAH PWA · 3,481 people · 2019 | 1/6 | SYR4 |
| Nitrate-Nitrite | 440 µg/L 4.4% of the EPA limit 10000 µg/L Main supplier: CHECOTAH PWA · 3,481 people · 2019 | 2/6 | SYR4 |
| Copper | 109.2 µg/L 8.4% of the EPA limit 1300 µg/L Main supplier: CHECOTAH PWA · 3,481 people · 2018
Highest in the city: 371.7 µg/L — MCINTOSH CO. RWS & SWMD #9 · 1,761 people · 2019 | 6/6 | SYR4 |
| Fluoride | 220 µg/L 5.5% of the EPA limit 4000 µg/L Main supplier: CHECOTAH PWA · 3,481 people · 2012 | 2/6 | SYR4 |
| TTHM | 137.2 µg/L 172% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: CHECOTAH PWA · 3,481 people · 2019
Highest in the city: 171.44 µg/L — MCINTOSH CO. RWD #5 · 1,900 people · 2019 | 6/6 | SYR4 |
| Barium | 89.2 µg/L 4.5% of the EPA limit 2000 µg/L Main supplier: CHECOTAH PWA · 3,481 people · 2012 | 2/6 | SYR4 |
| Chloroform | 69.49 µg/L No EPA limit set Main supplier: CHECOTAH PWA · 3,481 people · 2019
Highest in the city: 80.985 µg/L — MCINTOSH CO. RWD #5 · 1,900 people · 2019 | 6/6 | SYR4 |
| Total Haloacetic Acids (HAA5) | 41.04 µg/L 68% of the EPA limit 60 µg/L Main supplier: CHECOTAH PWA · 3,481 people · 2019
Highest in the city: 65.7 µg/L — MCINTOSH CO. RWS & SWMD #2 (ONAPA) · 2,774 people · 2019 | 6/6 | SYR4 |
| Bromodichloromethane | 44.24 µg/L No EPA limit set Main supplier: CHECOTAH PWA · 3,481 people · 2019
Highest in the city: 53.28 µg/L — MCINTOSH CO. RWD #5 · 1,900 people · 2019 | 6/6 | SYR4 |
| Lead | 43.485 µg/L 290% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: CHECOTAH PWA · 3,481 people · 2018 | 4/6 | SYR4 |
| Dibromochloromethane | 30.34 µg/L No EPA limit set Main supplier: CHECOTAH PWA · 3,481 people · 2019
Highest in the city: 37.2915 µg/L — MCINTOSH CO. RWD #5 · 1,900 people · 2019 | 6/6 | SYR4 |
| Trichloroacetic Acid | 20.495 µg/L No EPA limit set Main supplier: CHECOTAH PWA · 3,481 people · 2019
Highest in the city: 32.1 µg/L — MCINTOSH CO. RWS & SWMD #2 (ONAPA) · 2,774 people · 2019 | 6/6 | SYR4 |
| Dichloroacetic Acid | 23.185 µg/L No EPA limit set Main supplier: CHECOTAH PWA · 3,481 people · 2019
Highest in the city: 29.4 µg/L — MCINTOSH CO. RWS & SWMD #2 (ONAPA) · 2,774 people · 2019 | 6/6 | SYR4 |
| Bromoform | 11.035 µg/L No EPA limit set Main supplier: CHECOTAH PWA · 3,481 people · 2019
Highest in the city: 15.3 µg/L — MCINTOSH CO. RWD #5 · 1,900 people · 2019 | 6/6 | SYR4 |
| Monochloroacetic Acid | 3.585 µg/L No EPA limit set Main supplier: CHECOTAH PWA · 3,481 people · 2019
Highest in the city: 13.6405 µg/L — MCINTOSH CO. RWD #5 · 1,900 people · 2019 | 6/6 | SYR4 |
| Dibromoacetic Acid | 9.03 µg/L No EPA limit set Main supplier: CHECOTAH PWA · 3,481 people · 2019
Highest in the city: 10.912 µg/L — MCINTOSH CO. RWD #5 · 1,900 people · 2019 | 6/6 | SYR4 |
| Monobromoacetic Acid | 2.77 µg/L No EPA limit set Main supplier: CHECOTAH PWA · 3,481 people · 2019
Highest in the city: 9.169 µg/L — MCINTOSH CO. RWS & SWMD #2 (ONAPA) · 2,774 people · 2019 | 6/6 | SYR4 |
| Arsenic | 4.8 µg/L 48% of the EPA limit 10 µg/L Main supplier: CHECOTAH PWA · 3,481 people · 2012 | 1/6 | SYR4 |
| Gross Beta Particle Activity | 3.3 pCi/L No EPA limit set Highest in the city: MCINTOSH CO. RWS & SWMD #2 (ONAPA) · 2,774 people · 2017 | 1/6 | SYR4 |
| Carbon Tetrachloride | 1.3 µg/L 26% of the EPA limit 5 µg/L Main supplier: CHECOTAH PWA · 3,481 people · 2018 | 1/6 | SYR4 |
| Pfba | 0.0055 µg/L No EPA limit set Main supplier: CHECOTAH PWA · 3,481 people · 2025 | 1/6 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: CHECOTAH PWA · 3,481 people · 2024
Highest in the city: 0.0019 mg/L — MCINTOSH CO. RWD #5 · 1,900 people · 2025 | 6/6 | 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 Checotah
| Supplier | Population served |
|---|---|
| CHECOTAH PWA | 3,481 |
| MCINTOSH CO. RWS & SWMD #2 (ONAPA) | 2,774 |
| MCINTOSH CO. RWD #5 | 1,900 |
| MCINTOSH CO. RWS & SWMD #9 | 1,761 |
| MCINTOSH CO. RWD #3 (VICTOR) | 920 |
| MCINTOSH CO. RWD #7 | 200 |
Frequently asked questions about Checotah tap water
Is Checotah tap water safe to drink?
EPA testing detected 22 contaminants in the water serving Checotah. 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 Checotah?
6 public water suppliers report drinking-water monitoring for Checotah, Oklahoma to the EPA. Each is listed above with its population served.
What contaminants are in Checotah's water?
The contaminants EPA monitoring detected in Checotah include Chlorite, Nitrate-Nitrite, Copper, 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.