What was found in Nowata'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 |
|---|---|---|---|
| Copper | 487.4 µg/L 37% of the EPA limit 1300 µg/L Main supplier: NOWATA MUNICIPAL AUTHORITY · 3,971 people · 2019 | 7/7 | SYR4 |
| Nitrate-Nitrite | 404 µg/L 4% of the EPA limit 10000 µg/L Main supplier: NOWATA MUNICIPAL AUTHORITY · 3,971 people · 2019 | 1/7 | SYR4 |
| Fluoride | 224 µg/L 5.6% of the EPA limit 4000 µg/L Main supplier: NOWATA MUNICIPAL AUTHORITY · 3,971 people · 2013 | 1/7 | SYR4 |
| TTHM | 110.326 µg/L 138% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: NOWATA MUNICIPAL AUTHORITY · 3,971 people · 2019
Highest in the city: 149.65 µg/L — NOWATA CO RWD #2 · 205 people · 2019 | 7/7 | SYR4 |
| Chloroform | 72.165 µg/L No EPA limit set Main supplier: NOWATA MUNICIPAL AUTHORITY · 3,971 people · 2019
Highest in the city: 113.86 µg/L — NOWATA CO RWD #2 · 205 people · 2019 | 7/7 | SYR4 |
| Total Haloacetic Acids (HAA5) | 68.275 µg/L 114% of the EPA limit, at the 95th percentile of samples — 60 µg/L Main supplier: NOWATA MUNICIPAL AUTHORITY · 3,971 people · 2019
Highest in the city: 87.44 µg/L — NOWATA CO RWD #6 · 450 people · 2019 | 7/7 | SYR4 |
| Barium | 59.4 µg/L 3% of the EPA limit 2000 µg/L Main supplier: NOWATA MUNICIPAL AUTHORITY · 3,971 people · 2013 | 1/7 | SYR4 |
| Dichloroacetic Acid | 42.22 µg/L No EPA limit set Main supplier: NOWATA MUNICIPAL AUTHORITY · 3,971 people · 2019
Highest in the city: 44.85 µg/L — NOWATA CO RWD #2 · 205 people · 2019 | 7/7 | SYR4 |
| Lead | 4.094 µg/L 27% of the EPA limit 15 µg/L Main supplier: NOWATA MUNICIPAL AUTHORITY · 3,971 people · 2019
Highest in the city: 42.1 µg/L — NOWATA CO RWD #6 · 450 people · 2017 | 4/7 | SYR4 |
| Bromodichloromethane | 32.025 µg/L No EPA limit set Main supplier: NOWATA MUNICIPAL AUTHORITY · 3,971 people · 2019
Highest in the city: 36.375 µg/L — ELM BEND RWD INC · 600 people · 2019 | 7/7 | SYR4 |
| Trichloroacetic Acid | 28.65 µg/L No EPA limit set Main supplier: NOWATA MUNICIPAL AUTHORITY · 3,971 people · 2019
Highest in the city: 34.9 µg/L — NOWATA CO RWD #6 · 450 people · 2019 | 7/7 | SYR4 |
| Dibromochloromethane | 20.205 µg/L No EPA limit set Main supplier: NOWATA MUNICIPAL AUTHORITY · 3,971 people · 2019
Highest in the city: 23.96 µg/L — ELM BEND RWD INC · 600 people · 2019 | 7/7 | SYR4 |
| Bromoform | 12.32 µg/L No EPA limit set Main supplier: NOWATA MUNICIPAL AUTHORITY · 3,971 people · 2019
Highest in the city: 20.442 µg/L — NOWATA CO RWD #5 · 70 people · 2019 | 7/7 | SYR4 |
| Monochloroacetic Acid | 5.484 µg/L No EPA limit set Main supplier: NOWATA MUNICIPAL AUTHORITY · 3,971 people · 2019
Highest in the city: 20.131 µg/L — NOWATA CO RWD #5 · 70 people · 2019 | 7/7 | SYR4 |
| Dibromoacetic Acid | 17.753 µg/L No EPA limit set Main supplier: NOWATA MUNICIPAL AUTHORITY · 3,971 people · 2019 | 7/7 | SYR4 |
| Gross Beta Particle Activity | 6.64 pCi/L No EPA limit set Main supplier: NOWATA MUNICIPAL AUTHORITY · 3,971 people · 2017 | 1/7 | SYR4 |
| Monobromoacetic Acid | 2.16 µg/L No EPA limit set Main supplier: NOWATA MUNICIPAL AUTHORITY · 3,971 people · 2019
Highest in the city: 6.182 µg/L — NOWATA CO RWD #6 · 450 people · 2019 | 7/7 | SYR4 |
| Gross Alpha, Excl. Radon And U | 1.83 pCi/L 12% of the EPA limit 15 pCi/L Main supplier: NOWATA MUNICIPAL AUTHORITY · 3,971 people · 2017 | 1/7 | SYR4 |
| PFOS | 0.0094 µg/L No EPA limit set Main supplier: NOWATA MUNICIPAL AUTHORITY · 3,971 people · 2024 | 1/7 | UCMR-5 |
| Lead | 0.0012 mg/L 8% of the EPA limit 0.0150 mg/L Main supplier: NOWATA MUNICIPAL AUTHORITY · 3,971 people · 2025
Highest in the city: 0.0060 mg/L — NOWATA CO RWD #5 · 70 people · 2023 | 7/7 | LCR |
| PFHXS | 0.0048 µg/L No EPA limit set Main supplier: NOWATA MUNICIPAL AUTHORITY · 3,971 people · 2023 | 1/7 | UCMR-5 |
| Pfhxa | 0.0044 µg/L No EPA limit set Main supplier: NOWATA MUNICIPAL AUTHORITY · 3,971 people · 2023 | 1/7 | UCMR-5 |
| Pfpea | 0.0041 µg/L No EPA limit set Main supplier: NOWATA MUNICIPAL AUTHORITY · 3,971 people · 2023 | 1/7 | UCMR-5 |
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 Nowata
| Supplier | Population served |
|---|---|
| NOWATA MUNICIPAL AUTHORITY | 3,971 |
| CONSOLIDATED RWD #1 NOWATA AND ROGERS CO | 1,580 |
| ELM BEND RWD INC | 600 |
| NOWATA CO RWD #6 | 450 |
| NOWATA COUNTY RWD # 3 | 225 |
| NOWATA CO RWD #2 | 205 |
| NOWATA CO RWD #5 | 70 |
Frequently asked questions about Nowata tap water
Is Nowata tap water safe to drink?
EPA testing detected 23 contaminants in the water serving Nowata. 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 Nowata?
7 public water suppliers report drinking-water monitoring for Nowata, Oklahoma to the EPA. Each is listed above with its population served.
What contaminants are in Nowata's water?
The contaminants EPA monitoring detected in Nowata include Copper, Nitrate-Nitrite, Fluoride, 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.