What was found in ZIP 73446
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 |
|---|---|---|---|
| Fluoride | 119 µg/L 3% of the EPA limit 4000 µg/L Main supplier: MARSHALL COUNTY RURAL WATER DISTRICT #2 · 17,587 people · 2019
Highest in the ZIP: 1052.5 µg/L — MADILL · 3,410 people · 2019 | 2/3 | SYR4 |
| Chlorite | 803.3 µg/L 80% of the EPA limit 1000 µg/L Main supplier: MARSHALL COUNTY RURAL WATER DISTRICT #2 · 17,587 people · 2019 | 1/3 | SYR4 |
| Nitrate-Nitrite | 500 µg/L 5% of the EPA limit 10000 µg/L Main supplier: MARSHALL COUNTY RURAL WATER DISTRICT #2 · 17,587 people · 2019 | 3/3 | SYR4 |
| Copper | 111.1 µg/L 8.5% of the EPA limit 1300 µg/L Main supplier: MARSHALL COUNTY RURAL WATER DISTRICT #2 · 17,587 people · 2017
Highest in the ZIP: 295.2 µg/L — MADILL · 3,410 people · 2017 | 3/3 | SYR4 |
| TTHM | 100.2 µg/L 125% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: MARSHALL COUNTY RURAL WATER DISTRICT #2 · 17,587 people · 2019
Highest in the ZIP: 122.275 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 3/3 | SYR4 |
| Chloroform | 78.2 µg/L No EPA limit set Main supplier: MARSHALL COUNTY RURAL WATER DISTRICT #2 · 17,587 people · 2019
Highest in the ZIP: 94.645 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 73.15 µg/L 122% of the EPA limit, at the 95th percentile of samples — 60 µg/L Main supplier: MARSHALL COUNTY RURAL WATER DISTRICT #2 · 17,587 people · 2019 | 3/3 | SYR4 |
| Barium | 60.7 µg/L 3% of the EPA limit 2000 µg/L Main supplier: MARSHALL COUNTY RURAL WATER DISTRICT #2 · 17,587 people · 2019 | 2/3 | SYR4 |
| Trichloroacetic Acid | 43.61 µg/L No EPA limit set Main supplier: MARSHALL COUNTY RURAL WATER DISTRICT #2 · 17,587 people · 2019 | 3/3 | SYR4 |
| Dichloroacetic Acid | 37.96 µg/L No EPA limit set Main supplier: MARSHALL COUNTY RURAL WATER DISTRICT #2 · 17,587 people · 2019 | 3/3 | SYR4 |
| Bromodichloromethane | 27 µg/L No EPA limit set Main supplier: MARSHALL COUNTY RURAL WATER DISTRICT #2 · 17,587 people · 2019 | 3/3 | SYR4 |
| Lead | 13.55 µg/L 90% of the EPA limit 15 µg/L Main supplier: MARSHALL COUNTY RURAL WATER DISTRICT #2 · 17,587 people · 2017
Highest in the ZIP: 18.392 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2018 | 3/3 | SYR4 |
| Dibromochloromethane | 14.27 µg/L No EPA limit set Main supplier: MARSHALL COUNTY RURAL WATER DISTRICT #2 · 17,587 people · 2019 | 3/3 | SYR4 |
| Monochloroacetic Acid | 7.3495 µg/L No EPA limit set Main supplier: MARSHALL COUNTY RURAL WATER DISTRICT #2 · 17,587 people · 2019
Highest in the ZIP: 8.368 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 3/3 | SYR4 |
| Gross Beta Particle Activity | 5.6575 pCi/L No EPA limit set Main supplier: MARSHALL COUNTY RURAL WATER DISTRICT #2 · 17,587 people · 2017 | 3/3 | SYR4 |
| Bromoform | 4.088 µg/L No EPA limit set Main supplier: MARSHALL COUNTY RURAL WATER DISTRICT #2 · 17,587 people · 2019 | 2/3 | SYR4 |
| Dibromoacetic Acid | 3.9425 µg/L No EPA limit set Main supplier: MARSHALL COUNTY RURAL WATER DISTRICT #2 · 17,587 people · 2019 | 3/3 | SYR4 |
| Monobromoacetic Acid | 1.3775 µg/L No EPA limit set Main supplier: MARSHALL COUNTY RURAL WATER DISTRICT #2 · 17,587 people · 2019
Highest in the ZIP: 3.6495 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 3/3 | SYR4 |
| Gross Alpha, Excl. Radon And U | 2.295 pCi/L 15% of the EPA limit 15 pCi/L Main supplier: MARSHALL COUNTY RURAL WATER DISTRICT #2 · 17,587 people · 2017 | 2/3 | SYR4 |
| Combined Radium (-226 And -228) | 0.4360 pCi/L 8.7% of the EPA limit 5 pCi/L Main supplier: MARSHALL COUNTY RURAL WATER DISTRICT #2 · 17,587 people · 2017
Highest in the ZIP: 1.095 pCi/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 3/3 | SYR4 |
| Combined Uranium | 1.02 µg/L 3.4% of the EPA limit 30 µg/L Main supplier: MARSHALL COUNTY RURAL WATER DISTRICT #2 · 17,587 people · 2017 | 1/3 | 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 | 1/3 | SYR4 |
| Lead | 0.0011 mg/L 7.3% of the EPA limit 0.0150 mg/L Main supplier: MARSHALL COUNTY RURAL WATER DISTRICT #2 · 17,587 people · 2023
Highest in the ZIP: 0.0017 mg/L — MADILL · 3,410 people · 2023 | 3/3 | 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 73446
| Supplier | State | Population served |
|---|---|---|
| MARSHALL COUNTY RURAL WATER DISTRICT #2 | 17,587 | |
| BRYAN CO. RWS & SWMD #2 | OK | 6,270 |
| MADILL | OK | 3,410 |
Frequently asked questions about ZIP 73446 tap water
Is the tap water in ZIP 73446 safe to drink?
EPA testing detected 23 contaminants across the water suppliers serving ZIP 73446. 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 73446?
3 public water suppliers report EPA drinking-water monitoring for ZIP 73446. Each is listed above with its population served.
What contaminants are in ZIP 73446's water?
EPA monitoring detected Fluoride, Chlorite, Nitrate-Nitrite, Copper, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.