What was found in Elgin'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 | 3072 µg/L 31% of the EPA limit 10000 µg/L Main supplier: ELGIN PWA · 3,300 people · 2019
Highest in the city: 4920 µg/L — COMANCHE CO RWD #2 · 1,840 people · 2019 | 2/2 | SYR4 |
| Fluoride | 348 µg/L 8.7% of the EPA limit 4000 µg/L Main supplier: ELGIN PWA · 3,300 people · 2015 | 2/2 | SYR4 |
| Barium | 341.05 µg/L 17% of the EPA limit 2000 µg/L Main supplier: ELGIN PWA · 3,300 people · 2015 | 2/2 | SYR4 |
| Copper | 150.65 µg/L 12% of the EPA limit 1300 µg/L Main supplier: ELGIN PWA · 3,300 people · 2017
Highest in the city: 263.2 µg/L — COMANCHE CO RWD #2 · 1,840 people · 2017 | 2/2 | SYR4 |
| TTHM | 1.1 µg/L 1.4% of the EPA limit 80 µg/L Main supplier: ELGIN PWA · 3,300 people · 2018
Highest in the city: 36.325 µg/L — COMANCHE CO RWD #2 · 1,840 people · 2019 | 2/2 | SYR4 |
| Chloroform | 30.3 µg/L No EPA limit set Main supplier: ELGIN PWA · 3,300 people · 2018 | 2/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 4.1301 pCi/L 28% of the EPA limit 15 pCi/L Main supplier: ELGIN PWA · 3,300 people · 2019
Highest in the city: 16.8575 pCi/L — COMANCHE CO RWD #2 · 1,840 people · 2018 | 2/2 | SYR4 |
| Bromodichloromethane | 11.4 µg/L No EPA limit set Main supplier: ELGIN PWA · 3,300 people · 2018
Highest in the city: 13.05 µg/L — COMANCHE CO RWD #2 · 1,840 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 4.1 µg/L No EPA limit set Main supplier: ELGIN PWA · 3,300 people · 2018
Highest in the city: 11 µg/L — COMANCHE CO RWD #2 · 1,840 people · 2019 | 2/2 | SYR4 |
| Gross Beta Particle Activity | 2.919 pCi/L No EPA limit set Main supplier: ELGIN PWA · 3,300 people · 2019
Highest in the city: 9.845 pCi/L — COMANCHE CO RWD #2 · 1,840 people · 2018 | 2/2 | SYR4 |
| Lead | 6.6 µg/L 44% of the EPA limit 15 µg/L Main supplier: ELGIN PWA · 3,300 people · 2017
Highest in the city: 8.625 µg/L — COMANCHE CO RWD #2 · 1,840 people · 2017 | 2/2 | SYR4 |
| Bromoform | 1.095 µg/L No EPA limit set Main supplier: ELGIN PWA · 3,300 people · 2018
Highest in the city: 8.54 µg/L — COMANCHE CO RWD #2 · 1,840 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 7.8815 µg/L 13% of the EPA limit 60 µg/L Highest in the city: COMANCHE CO RWD #2 · 1,840 people · 2019 | 1/2 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 5.5 µg/L 92% of the EPA limit 6 µg/L Highest in the city: COMANCHE CO RWD #2 · 1,840 people · 2019 | 1/2 | SYR4 |
| Chromium | 5.46 µg/L 5.5% of the EPA limit 100 µg/L Main supplier: ELGIN PWA · 3,300 people · 2015 | 1/2 | SYR4 |
| Benzene | 4.82 µg/L 96% of the EPA limit 5 µg/L Highest in the city: COMANCHE CO RWD #2 · 1,840 people · 2019 | 1/2 | SYR4 |
| Dichloroacetic Acid | 4.5815 µg/L No EPA limit set Highest in the city: COMANCHE CO RWD #2 · 1,840 people · 2019 | 1/2 | SYR4 |
| Dibromoacetic Acid | 4.265 µg/L No EPA limit set Highest in the city: COMANCHE CO RWD #2 · 1,840 people · 2019 | 1/2 | SYR4 |
| Xylenes, Total | 3.259 µg/L 0% of the EPA limit 10000 µg/L Highest in the city: COMANCHE CO RWD #2 · 1,840 people · 2019 | 1/2 | SYR4 |
| Arsenic | 3.19 µg/L 32% of the EPA limit 10 µg/L Main supplier: ELGIN PWA · 3,300 people · 2015 | 1/2 | SYR4 |
| Combined Uranium | 1.695 µg/L 5.7% of the EPA limit 30 µg/L Main supplier: ELGIN PWA · 3,300 people · 2019
Highest in the city: 2.5325 µg/L — COMANCHE CO RWD #2 · 1,840 people · 2018 | 2/2 | SYR4 |
| Monobromoacetic Acid | 1.5 µg/L No EPA limit set Highest in the city: COMANCHE CO RWD #2 · 1,840 people · 2019 | 1/2 | SYR4 |
| Toluene | 1.45 µg/L 0.1% of the EPA limit 1000 µg/L Highest in the city: COMANCHE CO RWD #2 · 1,840 people · 2019 | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 1.186 pCi/L 24% of the EPA limit 5 pCi/L Main supplier: ELGIN PWA · 3,300 people · 2019 | 2/2 | SYR4 |
| Ethylbenzene | 0.5200 µg/L 0.1% of the EPA limit 700 µg/L Highest in the city: COMANCHE CO RWD #2 · 1,840 people · 2019 | 1/2 | SYR4 |
| Mercury | 0.0690 µg/L 3.5% of the EPA limit 2 µg/L Main supplier: ELGIN PWA · 3,300 people · 2015 | 1/2 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: ELGIN PWA · 3,300 people · 2025
Highest in the city: 0.0011 mg/L — COMANCHE CO RWD #2 · 1,840 people · 2023 | 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.
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 Elgin
| Supplier | Population served |
|---|---|
| ELGIN PWA | 3,300 |
| COMANCHE CO RWD #2 | 1,840 |
Frequently asked questions about Elgin tap water
Is Elgin tap water safe to drink?
EPA testing detected 27 contaminants in the water serving Elgin. 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 Elgin?
2 public water suppliers report drinking-water monitoring for Elgin, Oklahoma to the EPA. Each is listed above with its population served.
What contaminants are in Elgin's water?
The contaminants EPA monitoring detected in Elgin include Nitrate-Nitrite, Fluoride, Barium, Copper, 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.