What was found in ZIP 74818
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 | 470 µg/L 12% of the EPA limit 4000 µg/L Main supplier: SEMINOLE · 6,899 people · 2019 | 1/1 | SYR4 |
| Nitrate-Nitrite | 403 µg/L 4% of the EPA limit 10000 µg/L Main supplier: SEMINOLE · 6,899 people · 2019 | 1/1 | SYR4 |
| Barium | 157.09 µg/L 7.9% of the EPA limit 2000 µg/L Main supplier: SEMINOLE · 6,899 people · 2019 | 1/1 | SYR4 |
| Copper | 94.5575 µg/L 7.3% of the EPA limit 1300 µg/L Main supplier: SEMINOLE · 6,899 people · 2019 | 1/1 | SYR4 |
| Lithium | 25 µg/L No EPA limit set Main supplier: SEMINOLE · 6,899 people · 2025 | 1/1 | UCMR-5 |
| Lead | 10.082 µg/L 67% of the EPA limit 15 µg/L Main supplier: SEMINOLE · 6,899 people · 2019 | 1/1 | SYR4 |
| Gross Beta Particle Activity | 9.784 pCi/L No EPA limit set Main supplier: SEMINOLE · 6,899 people · 2019 | 1/1 | SYR4 |
| Selenium | 9.5 µg/L 19% of the EPA limit 50 µg/L Main supplier: SEMINOLE · 6,899 people · 2019 | 1/1 | SYR4 |
| Gross Alpha, Excl. Radon And U | 7.906 pCi/L 53% of the EPA limit 15 pCi/L Main supplier: SEMINOLE · 6,899 people · 2019 | 1/1 | SYR4 |
| TTHM | 7.436 µg/L 9.3% of the EPA limit 80 µg/L Main supplier: SEMINOLE · 6,899 people · 2019 | 1/1 | SYR4 |
| Combined Radium (-226 And -228) | 5.304 pCi/L 106% of the EPA limit, at the 95th percentile of samples — 5 pCi/L Main supplier: SEMINOLE · 6,899 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 2.78 µg/L No EPA limit set Main supplier: SEMINOLE · 6,899 people · 2019 | 1/1 | SYR4 |
| Arsenic | 2.16 µg/L 22% of the EPA limit 10 µg/L Main supplier: SEMINOLE · 6,899 people · 2019 | 1/1 | SYR4 |
| Bromoform | 1.9005 µg/L No EPA limit set Main supplier: SEMINOLE · 6,899 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 1.87 µg/L No EPA limit set Main supplier: SEMINOLE · 6,899 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 1.38 µg/L No EPA limit set Main supplier: SEMINOLE · 6,899 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 1.38 µg/L 2.3% of the EPA limit 60 µg/L Main supplier: SEMINOLE · 6,899 people · 2019 | 1/1 | SYR4 |
| Antimony, Total | 1.1445 µg/L 19% of the EPA limit 6 µg/L Main supplier: SEMINOLE · 6,899 people · 2019 | 1/1 | SYR4 |
| Chloroform | 1.118 µg/L No EPA limit set Main supplier: SEMINOLE · 6,899 people · 2019 | 1/1 | SYR4 |
| Chromium | 0.9000 µg/L 0.9% of the EPA limit 100 µg/L Main supplier: SEMINOLE · 6,899 people · 2019 | 1/1 | SYR4 |
| Mercury | 0.1520 µg/L 7.6% of the EPA limit 2 µg/L Main supplier: SEMINOLE · 6,899 people · 2019 | 1/1 | SYR4 |
| Lead | 0.0017 mg/L 11% of the EPA limit 0.0150 mg/L Main supplier: SEMINOLE · 6,899 people · 2025 | 1/1 | 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 74818
| Supplier | State | Population served |
|---|---|---|
| SEMINOLE | OK | 6,899 |
Frequently asked questions about ZIP 74818 tap water
Is the tap water in ZIP 74818 safe to drink?
EPA testing detected 22 contaminants across the water suppliers serving ZIP 74818. 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 74818?
1 public water supplier report EPA drinking-water monitoring for ZIP 74818. Each is listed above with its population served.
What contaminants are in ZIP 74818's water?
EPA monitoring detected Fluoride, Nitrate-Nitrite, Barium, Copper, Lithium, and others across this ZIP's suppliers. The full list with levels and sources is above.