What was found in Noble'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 | 2046.5 µg/L 20% of the EPA limit 10000 µg/L Main supplier: NOBLE UTILITIES AUTHORITY · 5,750 people · 2019 | 4/4 | SYR4 |
| Fluoride | 260 µg/L 6.5% of the EPA limit 4000 µg/L Main supplier: NOBLE UTILITIES AUTHORITY · 5,750 people · 2018
Highest in the city: 1385.5 µg/L — PECAN TREE WATER ASSN · 22 people · 2017 | 3/4 | SYR4 |
| Barium | 399.6 µg/L 20% of the EPA limit 2000 µg/L Main supplier: NOBLE UTILITIES AUTHORITY · 5,750 people · 2018
Highest in the city: 466 µg/L — PRAIRIE CREEK VILLAGE MHP · 145 people · 2013 | 4/4 | SYR4 |
| Copper | 351 µg/L 27% of the EPA limit 1300 µg/L Main supplier: NOBLE UTILITIES AUTHORITY · 5,750 people · 2019 | 4/4 | SYR4 |
| Nitrate | 260 µg/L 2.6% of the EPA limit 10000 µg/L Highest in the city: PECAN TREE WATER ASSN · 22 people · 2019 | 1/4 | SYR4 |
| Combined Uranium | 6.92 µg/L 23% of the EPA limit 30 µg/L Main supplier: NOBLE UTILITIES AUTHORITY · 5,750 people · 2019
Highest in the city: 48.115 µg/L — PECAN TREE WATER ASSN · 22 people · 2019 | 3/4 | SYR4 |
| Lead | 5.3 µg/L 35% of the EPA limit 15 µg/L Main supplier: NOBLE UTILITIES AUTHORITY · 5,750 people · 2019
Highest in the city: 35.5 µg/L — STONETOWN CLEARVIEW MHC · 170 people · 2017 | 3/4 | SYR4 |
| TTHM | 16.02 µg/L 20% of the EPA limit 80 µg/L Main supplier: NOBLE UTILITIES AUTHORITY · 5,750 people · 2019
Highest in the city: 34.8 µg/L — STONETOWN CLEARVIEW MHC · 170 people · 2019 | 2/4 | SYR4 |
| Chloroform | 3.225 µg/L No EPA limit set Main supplier: NOBLE UTILITIES AUTHORITY · 5,750 people · 2019
Highest in the city: 33.1 µg/L — STONETOWN CLEARVIEW MHC · 170 people · 2019 | 2/4 | SYR4 |
| Gross Alpha, Excl. Radon And U | 9.7 pCi/L 65% of the EPA limit 15 pCi/L Main supplier: NOBLE UTILITIES AUTHORITY · 5,750 people · 2019
Highest in the city: 32.378 pCi/L — PECAN TREE WATER ASSN · 22 people · 2019 | 4/4 | SYR4 |
| Lithium | 24.4 µg/L No EPA limit set Main supplier: NOBLE UTILITIES AUTHORITY · 5,750 people · 2023 | 1/4 | UCMR-5 |
| Chromium | 19 µg/L 19% of the EPA limit 100 µg/L Main supplier: NOBLE UTILITIES AUTHORITY · 5,750 people · 2018
Highest in the city: 23.09 µg/L — STONETOWN CLEARVIEW MHC · 170 people · 2019 | 2/4 | SYR4 |
| Selenium | 20.32 µg/L 41% of the EPA limit 50 µg/L Highest in the city: PECAN TREE WATER ASSN · 22 people · 2017 | 1/4 | SYR4 |
| Gross Beta Particle Activity | 5.4696 pCi/L No EPA limit set Main supplier: NOBLE UTILITIES AUTHORITY · 5,750 people · 2019
Highest in the city: 15.345 pCi/L — PECAN TREE WATER ASSN · 22 people · 2019 | 4/4 | SYR4 |
| Arsenic | 11.545 µg/L 115% of the EPA limit, at the 95th percentile of samples — 10 µg/L Highest in the city: STONETOWN CLEARVIEW MHC · 170 people · 2019 | 2/4 | SYR4 |
| Dichloromethane | 10.24 µg/L 205% of the EPA limit, at the 95th percentile of samples — 5 µg/L Highest in the city: STONETOWN CLEARVIEW MHC · 170 people · 2019 | 1/4 | SYR4 |
| Dibromochloromethane | 5.73 µg/L No EPA limit set Main supplier: NOBLE UTILITIES AUTHORITY · 5,750 people · 2019 | 1/4 | SYR4 |
| Antimony, Total | 5.7 µg/L 95% of the EPA limit 6 µg/L Highest in the city: STONETOWN CLEARVIEW MHC · 170 people · 2019 | 1/4 | SYR4 |
| Bromoform | 5.45 µg/L No EPA limit set Main supplier: NOBLE UTILITIES AUTHORITY · 5,750 people · 2019 | 1/4 | SYR4 |
| Bromodichloromethane | 5.3 µg/L No EPA limit set Main supplier: NOBLE UTILITIES AUTHORITY · 5,750 people · 2019 | 2/4 | SYR4 |
| Combined Radium (-226 And -228) | 2.872 pCi/L 57% of the EPA limit 5 pCi/L Main supplier: NOBLE UTILITIES AUTHORITY · 5,750 people · 2019 | 4/4 | SYR4 |
| Styrene | 1.975 µg/L 2% of the EPA limit 100 µg/L Highest in the city: STONETOWN CLEARVIEW MHC · 170 people · 2019 | 1/4 | SYR4 |
| Carbon Tetrachloride | 1.9 µg/L 38% of the EPA limit 5 µg/L Highest in the city: STONETOWN CLEARVIEW MHC · 170 people · 2019 | 1/4 | SYR4 |
| Dibromoacetic Acid | 1.29 µg/L No EPA limit set Main supplier: NOBLE UTILITIES AUTHORITY · 5,750 people · 2019 | 1/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 1.28 µg/L 2.1% of the EPA limit 60 µg/L Main supplier: NOBLE UTILITIES AUTHORITY · 5,750 people · 2019 | 1/4 | SYR4 |
| Dichloroacetic Acid | 1.1 µg/L No EPA limit set Main supplier: NOBLE UTILITIES AUTHORITY · 5,750 people · 2019 | 1/4 | SYR4 |
| Diquat | 0.8550 µg/L 4.3% of the EPA limit 20 µg/L Main supplier: NOBLE UTILITIES AUTHORITY · 5,750 people · 2019 | 1/4 | SYR4 |
| Ethylbenzene | 0.5000 µg/L 0.1% of the EPA limit 700 µg/L Highest in the city: STONETOWN CLEARVIEW MHC · 170 people · 2019 | 1/4 | SYR4 |
| Lead | 0.0013 mg/L 8.7% of the EPA limit 0.0150 mg/L Main supplier: NOBLE UTILITIES AUTHORITY · 5,750 people · 2025
Highest in the city: 0.0303 mg/L — PECAN TREE WATER ASSN · 22 people · 2024 | 4/4 | LCR |
| PFHXS | 0.0071 µg/L No EPA limit set Main supplier: NOBLE UTILITIES AUTHORITY · 5,750 people · 2023 | 1/4 | 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 Noble
| Supplier | Population served |
|---|---|
| NOBLE UTILITIES AUTHORITY | 5,750 |
| STONETOWN CLEARVIEW MHC | 170 |
| PRAIRIE CREEK VILLAGE MHP | 145 |
| PECAN TREE WATER ASSN | 22 |
Frequently asked questions about Noble tap water
Is Noble tap water safe to drink?
EPA testing detected 30 contaminants in the water serving Noble. 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 Noble?
4 public water suppliers report drinking-water monitoring for Noble, Oklahoma to the EPA. Each is listed above with its population served.
What contaminants are in Noble's water?
The contaminants EPA monitoring detected in Noble include Nitrate-Nitrite, Fluoride, Barium, Copper, Nitrate. 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.