What was found in ZIP 74401
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 | 895 µg/L 9% of the EPA limit 10000 µg/L Main supplier: MUSKOGEE MUNICIPAL AUTHORITY · 38,310 people · 2019 | 1/3 | SYR4 |
| Chlorite | 828 µg/L 83% of the EPA limit 1000 µg/L Main supplier: MUSKOGEE MUNICIPAL AUTHORITY · 38,310 people · 2019 | 1/3 | SYR4 |
| Fluoride | 720 µg/L 18% of the EPA limit 4000 µg/L Main supplier: MUSKOGEE MUNICIPAL AUTHORITY · 38,310 people · 2016 | 1/3 | SYR4 |
| Copper | 447.1 µg/L 34% of the EPA limit 1300 µg/L Main supplier: MUSKOGEE MUNICIPAL AUTHORITY · 38,310 people · 2019
Highest in the ZIP: 520.55 µg/L — MUSKOGEE CO. RWD #5 · 4,135 people · 2019 | 3/3 | SYR4 |
| TTHM | 109 µg/L 136% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: MUSKOGEE MUNICIPAL AUTHORITY · 38,310 people · 2019
Highest in the ZIP: 166.65 µg/L — MUSKOGEE CO. RWD #5 · 4,135 people · 2019 | 3/3 | SYR4 |
| Chloroform | 85.44 µg/L No EPA limit set Main supplier: MUSKOGEE MUNICIPAL AUTHORITY · 38,310 people · 2019
Highest in the ZIP: 155.15 µg/L — MUSKOGEE CO. RWD #5 · 4,135 people · 2019 | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 87.86 µg/L 146% of the EPA limit, at the 95th percentile of samples — 60 µg/L Main supplier: MUSKOGEE MUNICIPAL AUTHORITY · 38,310 people · 2019
Highest in the ZIP: 129 µg/L — MUSKOGEE CO. RWD #5 · 4,135 people · 2019 | 3/3 | SYR4 |
| Dichloroacetic Acid | 38.295 µg/L No EPA limit set Main supplier: MUSKOGEE MUNICIPAL AUTHORITY · 38,310 people · 2019
Highest in the ZIP: 63.7 µg/L — MUSKOGEE CO. RWD #5 · 4,135 people · 2019 | 3/3 | SYR4 |
| Trichloroacetic Acid | 44.46 µg/L No EPA limit set Main supplier: MUSKOGEE MUNICIPAL AUTHORITY · 38,310 people · 2019
Highest in the ZIP: 61.965 µg/L — MUSKOGEE CO. RWD #5 · 4,135 people · 2019 | 3/3 | SYR4 |
| Barium | 48 µg/L 2.4% of the EPA limit 2000 µg/L Main supplier: MUSKOGEE MUNICIPAL AUTHORITY · 38,310 people · 2016 | 1/3 | SYR4 |
| Bromodichloromethane | 20.24 µg/L No EPA limit set Main supplier: MUSKOGEE MUNICIPAL AUTHORITY · 38,310 people · 2019
Highest in the ZIP: 22.53 µg/L — MUSKOGEE CO. RWD #1 (OKTAHA) · 2,280 people · 2019 | 3/3 | SYR4 |
| Monochloroacetic Acid | 10.069 µg/L No EPA limit set Main supplier: MUSKOGEE MUNICIPAL AUTHORITY · 38,310 people · 2019
Highest in the ZIP: 14.63 µg/L — MUSKOGEE CO. RWD #5 · 4,135 people · 2019 | 3/3 | SYR4 |
| Lead | 6.7 µg/L 45% of the EPA limit 15 µg/L Main supplier: MUSKOGEE MUNICIPAL AUTHORITY · 38,310 people · 2019
Highest in the ZIP: 10.26 µg/L — MUSKOGEE CO. RWD #5 · 4,135 people · 2019 | 2/3 | SYR4 |
| Dibromochloromethane | 5.674 µg/L No EPA limit set Main supplier: MUSKOGEE MUNICIPAL AUTHORITY · 38,310 people · 2019
Highest in the ZIP: 6.906 µg/L — MUSKOGEE CO. RWD #5 · 4,135 people · 2019 | 3/3 | SYR4 |
| Gross Beta Particle Activity | 4.5195 pCi/L No EPA limit set Main supplier: MUSKOGEE MUNICIPAL AUTHORITY · 38,310 people · 2016 | 1/3 | SYR4 |
| Monobromoacetic Acid | 2.3375 µg/L No EPA limit set Main supplier: MUSKOGEE MUNICIPAL AUTHORITY · 38,310 people · 2019 | 2/3 | SYR4 |
| Dibromoacetic Acid | 2.063 µg/L No EPA limit set Main supplier: MUSKOGEE MUNICIPAL AUTHORITY · 38,310 people · 2019
Highest in the ZIP: 2.3015 µg/L — MUSKOGEE CO. RWD #1 (OKTAHA) · 2,280 people · 2019 | 3/3 | SYR4 |
| Combined Radium (-226 And -228) | 0.2170 pCi/L 4.3% of the EPA limit 5 pCi/L Main supplier: MUSKOGEE MUNICIPAL AUTHORITY · 38,310 people · 2016 | 1/3 | SYR4 |
| Lead | 0.0054 mg/L 36% of the EPA limit 0.0150 mg/L Main supplier: MUSKOGEE MUNICIPAL AUTHORITY · 38,310 people · 2025 | 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 74401
| Supplier | State | Population served |
|---|---|---|
| MUSKOGEE MUNICIPAL AUTHORITY | OK | 38,310 |
| MUSKOGEE CO. RWD #5 | OK | 4,135 |
| MUSKOGEE CO. RWD #1 (OKTAHA) | OK | 2,280 |
Frequently asked questions about ZIP 74401 tap water
Is the tap water in ZIP 74401 safe to drink?
EPA testing detected 19 contaminants across the water suppliers serving ZIP 74401. 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 74401?
3 public water suppliers report EPA drinking-water monitoring for ZIP 74401. Each is listed above with its population served.
What contaminants are in ZIP 74401's water?
EPA monitoring detected Nitrate-Nitrite, Chlorite, Fluoride, Copper, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.