What was found in ZIP 73703
The level at this ZIP's main supplier, the highest level anywhere in it, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 9210 µg/L 92% of the EPA limit 10000 µg/L Main supplier: ENID · 49,347 people · 2019 | 1/2 | SYR4 |
| Nitrate-Nitrite | 8724 µg/L 87% of the EPA limit 10000 µg/L Main supplier: ENID · 49,347 people · 2019 | 2/2 | SYR4 |
| Copper | 877.35 µg/L 67% of the EPA limit 1300 µg/L Main supplier: ENID · 49,347 people · 2018 | 2/2 | SYR4 |
| Fluoride | 740 µg/L 19% of the EPA limit 4000 µg/L Main supplier: ENID · 49,347 people · 2017 | 1/2 | SYR4 |
| Barium | 378.8 µg/L 19% of the EPA limit 2000 µg/L Main supplier: ENID · 49,347 people · 2017 | 2/2 | SYR4 |
| TTHM | 63.19 µg/L 79% of the EPA limit 80 µg/L Main supplier: ENID · 49,347 people · 2019
Highest in the ZIP: 122.275 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 2/2 | SYR4 |
| Chloroform | 16.275 µg/L No EPA limit set Main supplier: ENID · 49,347 people · 2019
Highest in the ZIP: 94.645 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 9.897 µg/L 16% of the EPA limit 60 µg/L Main supplier: ENID · 49,347 people · 2019
Highest in the ZIP: 62.71 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 2/2 | SYR4 |
| Lithium | 36.5 µg/L No EPA limit set Main supplier: ENID · 49,347 people · 2024 | 1/2 | UCMR-5 |
| Trichloroacetic Acid | 3.02 µg/L No EPA limit set Main supplier: ENID · 49,347 people · 2019
Highest in the ZIP: 36.03 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 6.358 µg/L No EPA limit set Main supplier: ENID · 49,347 people · 2019
Highest in the ZIP: 30.355 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 15.525 µg/L No EPA limit set Main supplier: ENID · 49,347 people · 2019
Highest in the ZIP: 24.055 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 2/2 | SYR4 |
| Lead | 20.57 µg/L 137% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: ENID · 49,347 people · 2018 | 2/2 | SYR4 |
| Dibromochloromethane | 18.435 µg/L No EPA limit set Main supplier: ENID · 49,347 people · 2019 | 2/2 | SYR4 |
| Bromoform | 10.855 µg/L No EPA limit set Main supplier: ENID · 49,347 people · 2019 | 2/2 | SYR4 |
| Monochloroacetic Acid | 8.368 µg/L No EPA limit set Highest in the ZIP: BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 1/2 | SYR4 |
| Gross Beta Particle Activity | 5.893 pCi/L No EPA limit set Main supplier: ENID · 49,347 people · 2018 | 2/2 | SYR4 |
| Arsenic | 5.095 µg/L 51% of the EPA limit 10 µg/L Main supplier: ENID · 49,347 people · 2017 | 1/2 | SYR4 |
| Dibromoacetic Acid | 4.189 µg/L No EPA limit set Main supplier: ENID · 49,347 people · 2019 | 2/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 4.0675 pCi/L 27% of the EPA limit 15 pCi/L Main supplier: ENID · 49,347 people · 2018 | 1/2 | SYR4 |
| Monobromoacetic Acid | 2.346 µg/L No EPA limit set Main supplier: ENID · 49,347 people · 2019
Highest in the ZIP: 3.6495 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 2/2 | SYR4 |
| Combined Uranium | 3.637 µg/L 12% of the EPA limit 30 µg/L Main supplier: ENID · 49,347 people · 2018 | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 1.99 pCi/L 40% of the EPA limit 5 pCi/L Main supplier: ENID · 49,347 people · 2018 | 2/2 | SYR4 |
| 2,4-D | 0.9000 µg/L 1.3% of the EPA limit 70 µg/L Highest in the ZIP: BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 1/2 | SYR4 |
| Lead | 0.0051 mg/L 34% of the EPA limit 0.0150 mg/L Main supplier: ENID · 49,347 people · 2024 | 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.
Water suppliers serving ZIP 73703
| Supplier | State | Population served |
|---|---|---|
| ENID | OK | 49,347 |
| BRYAN CO. RWS & SWMD #2 | OK | 6,270 |
Frequently asked questions about ZIP 73703 tap water
Is the tap water in ZIP 73703 safe to drink?
EPA testing detected 25 contaminants across the water suppliers serving ZIP 73703. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.
Which water suppliers serve ZIP 73703?
2 public water suppliers report EPA drinking-water monitoring for ZIP 73703. Each is listed above with its population served.
What contaminants are in ZIP 73703's water?
EPA monitoring detected Nitrate, Nitrate-Nitrite, Copper, Fluoride, Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.