What was found in ZIP 73072
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-Nitrite | 878.4 µg/L 8.8% of the EPA limit 10000 µg/L Main supplier: NORMAN UTILITIES AUTHORITY · 104,868 people · 2019 | 2/2 | SYR4 |
| Fluoride | 796.2 µg/L 20% of the EPA limit 4000 µg/L Main supplier: NORMAN UTILITIES AUTHORITY · 104,868 people · 2019 | 1/2 | SYR4 |
| Nitrate | 752 µg/L 7.5% of the EPA limit 10000 µg/L Main supplier: NORMAN UTILITIES AUTHORITY · 104,868 people · 2018 | 1/2 | SYR4 |
| Barium | 422.8 µg/L 21% of the EPA limit 2000 µg/L Main supplier: NORMAN UTILITIES AUTHORITY · 104,868 people · 2019 | 2/2 | SYR4 |
| Copper | 84.96 µg/L 6.5% of the EPA limit 1300 µg/L Main supplier: NORMAN UTILITIES AUTHORITY · 104,868 people · 2019
Highest in the ZIP: 288.5 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2018 | 2/2 | SYR4 |
| Nitrite | 281.8 µg/L 28% of the EPA limit 1000 µg/L Main supplier: NORMAN UTILITIES AUTHORITY · 104,868 people · 2019 | 1/2 | SYR4 |
| TTHM | 30.71 µg/L 38% of the EPA limit 80 µg/L Main supplier: NORMAN UTILITIES AUTHORITY · 104,868 people · 2019
Highest in the ZIP: 122.275 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 2/2 | SYR4 |
| Chloroform | 15.2 µg/L No EPA limit set Main supplier: NORMAN UTILITIES AUTHORITY · 104,868 people · 2019
Highest in the ZIP: 94.645 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 2/2 | SYR4 |
| Chromium | 89.9 µg/L 90% of the EPA limit 100 µg/L Main supplier: NORMAN UTILITIES AUTHORITY · 104,868 people · 2019 | 1/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 21.03 µg/L 35% of the EPA limit 60 µg/L Main supplier: NORMAN UTILITIES AUTHORITY · 104,868 people · 2019
Highest in the ZIP: 62.71 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 2/2 | SYR4 |
| Trichloroacetic Acid | 2.5595 µg/L No EPA limit set Main supplier: NORMAN UTILITIES AUTHORITY · 104,868 people · 2019
Highest in the ZIP: 36.03 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 15.355 µg/L No EPA limit set Main supplier: NORMAN UTILITIES AUTHORITY · 104,868 people · 2019
Highest in the ZIP: 30.355 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 2/2 | SYR4 |
| Combined Uranium | 24.075 µg/L 80% of the EPA limit 30 µg/L Main supplier: NORMAN UTILITIES AUTHORITY · 104,868 people · 2019 | 1/2 | SYR4 |
| Bromodichloromethane | 5.6015 µg/L No EPA limit set Main supplier: NORMAN UTILITIES AUTHORITY · 104,868 people · 2019
Highest in the ZIP: 24.055 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 2/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 19.555 pCi/L 130% of the EPA limit, at the 95th percentile of samples — 15 pCi/L Main supplier: NORMAN UTILITIES AUTHORITY · 104,868 people · 2019 | 1/2 | SYR4 |
| Selenium | 19.285 µg/L 39% of the EPA limit 50 µg/L Main supplier: NORMAN UTILITIES AUTHORITY · 104,868 people · 2019 | 1/2 | SYR4 |
| Lead | 5.778 µg/L 39% of the EPA limit 15 µg/L Main supplier: NORMAN UTILITIES AUTHORITY · 104,868 people · 2019
Highest in the ZIP: 18.392 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2018 | 2/2 | SYR4 |
| Cyanide | 18.1 µg/L 9.1% of the EPA limit 200 µg/L Main supplier: NORMAN UTILITIES AUTHORITY · 104,868 people · 2019 | 1/2 | SYR4 |
| Lithium | 17.7 µg/L No EPA limit set Main supplier: NORMAN UTILITIES AUTHORITY · 104,868 people · 2025 | 1/2 | UCMR-5 |
| Arsenic | 11.9 µg/L 119% of the EPA limit, at the 95th percentile of samples — 10 µg/L Main supplier: NORMAN UTILITIES AUTHORITY · 104,868 people · 2019 | 1/2 | SYR4 |
| Toluene | 11.065 µg/L 1.1% of the EPA limit 1000 µg/L Main supplier: NORMAN UTILITIES AUTHORITY · 104,868 people · 2019 | 1/2 | SYR4 |
| Gross Beta Particle Activity | 9.5345 pCi/L No EPA limit set Main supplier: NORMAN UTILITIES AUTHORITY · 104,868 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 7.087 µg/L No EPA limit set Main supplier: NORMAN UTILITIES AUTHORITY · 104,868 people · 2019
Highest in the ZIP: 8.8385 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 2/2 | SYR4 |
| Monochloroacetic Acid | 3.559 µg/L No EPA limit set Main supplier: NORMAN UTILITIES AUTHORITY · 104,868 people · 2019
Highest in the ZIP: 8.368 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 2/2 | SYR4 |
| Monobromoacetic Acid | 3.6495 µg/L No EPA limit set Highest in the ZIP: BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 1/2 | SYR4 |
| Antimony, Total | 3.4825 µg/L 58% of the EPA limit 6 µg/L Main supplier: NORMAN UTILITIES AUTHORITY · 104,868 people · 2019 | 1/2 | SYR4 |
| Dibromoacetic Acid | 1.434 µg/L No EPA limit set Main supplier: NORMAN UTILITIES AUTHORITY · 104,868 people · 2019
Highest in the ZIP: 2.612 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 2/2 | SYR4 |
| Combined Radium (-226 And -228) | 2.351 pCi/L 47% of the EPA limit 5 pCi/L Main supplier: NORMAN UTILITIES AUTHORITY · 104,868 people · 2019 | 2/2 | SYR4 |
| Bromoform | 1.274 µg/L No EPA limit set Highest in the ZIP: BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 1/2 | SYR4 |
| Simazine | 1.16 µg/L 29% of the EPA limit 4 µg/L Main supplier: NORMAN UTILITIES AUTHORITY · 104,868 people · 2019 | 1/2 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 1.06 µg/L 18% of the EPA limit 6 µg/L Main supplier: NORMAN UTILITIES AUTHORITY · 104,868 people · 2019 | 1/2 | SYR4 |
| 2,4-D | 0.2850 µg/L 0.4% of the EPA limit 70 µg/L Main supplier: NORMAN UTILITIES AUTHORITY · 104,868 people · 2019
Highest in the ZIP: 0.9000 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 2/2 | SYR4 |
| Dichloromethane | 0.6100 µg/L 12% of the EPA limit 5 µg/L Main supplier: NORMAN UTILITIES AUTHORITY · 104,868 people · 2019 | 1/2 | SYR4 |
| Thallium, Total | 0.3988 µg/L 20% of the EPA limit 2 µg/L Main supplier: NORMAN UTILITIES AUTHORITY · 104,868 people · 2019 | 1/2 | SYR4 |
| Pentachlorophenol | 0.1600 µg/L 16% of the EPA limit 1 µg/L Main supplier: NORMAN UTILITIES AUTHORITY · 104,868 people · 2019 | 1/2 | SYR4 |
| Cadmium | 0.1437 µg/L 2.9% of the EPA limit 5 µg/L Main supplier: NORMAN UTILITIES AUTHORITY · 104,868 people · 2019 | 1/2 | SYR4 |
| Pfba | 0.0075 µg/L No EPA limit set Main supplier: NORMAN UTILITIES AUTHORITY · 104,868 people · 2025 | 1/2 | UCMR-5 |
| PFBS | 0.0030 µg/L No EPA limit set Main supplier: NORMAN UTILITIES AUTHORITY · 104,868 people · 2025 | 1/2 | UCMR-5 |
| Lead | 0.00055 mg/L 3.7% of the EPA limit 0.0150 mg/L Main supplier: NORMAN UTILITIES AUTHORITY · 104,868 people · 2025
Highest in the ZIP: 0.00056 mg/L — BRYAN CO. RWS & SWMD #2 · 6,270 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 73072
| Supplier | State | Population served |
|---|---|---|
| NORMAN UTILITIES AUTHORITY | OK | 104,868 |
| BRYAN CO. RWS & SWMD #2 | OK | 6,270 |
Frequently asked questions about ZIP 73072 tap water
Is the tap water in ZIP 73072 safe to drink?
EPA testing detected 39 contaminants across the water suppliers serving ZIP 73072. 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 73072?
2 public water suppliers report EPA drinking-water monitoring for ZIP 73072. Each is listed above with its population served.
What contaminants are in ZIP 73072's water?
EPA monitoring detected Nitrate-Nitrite, Fluoride, Nitrate, Barium, Copper, and others across this ZIP's suppliers. The full list with levels and sources is above.