What was found in ZIP 74820
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 | 1340 µg/L 13% of the EPA limit 10000 µg/L Main supplier: ADA · 22,600 people · 2019
Highest in the ZIP: 5368.5 µg/L — PONTOTOC CO RWD # 8 · 4,250 people · 2019 | 3/4 | SYR4 |
| Fluoride | 840 µg/L 21% of the EPA limit 4000 µg/L Main supplier: ADA · 22,600 people · 2015 | 1/4 | SYR4 |
| Copper | 299.6 µg/L 23% of the EPA limit 1300 µg/L Main supplier: ADA · 22,600 people · 2019
Highest in the ZIP: 364.019 µg/L — PONTOTOC CO RWD # 8 · 4,250 people · 2019 | 4/4 | SYR4 |
| TTHM | 9.76 µg/L 12% of the EPA limit 80 µg/L Main supplier: ADA · 22,600 people · 2019
Highest in the ZIP: 122.275 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 4/4 | SYR4 |
| Chloroform | 3.759 µg/L No EPA limit set Main supplier: ADA · 22,600 people · 2019
Highest in the ZIP: 94.645 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 4/4 | SYR4 |
| Barium | 49 µg/L 2.5% of the EPA limit 2000 µg/L Main supplier: ADA · 22,600 people · 2015
Highest in the ZIP: 75.89 µg/L — PONTOTOC CO RWD # 8 · 4,250 people · 2019 | 3/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 1.11 µg/L 1.9% of the EPA limit 60 µg/L Main supplier: ADA · 22,600 people · 2019
Highest in the ZIP: 62.71 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 4/4 | SYR4 |
| Trichloroacetic Acid | 1.11 µg/L No EPA limit set Main supplier: ADA · 22,600 people · 2019
Highest in the ZIP: 36.03 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 3/4 | SYR4 |
| Dichloroacetic Acid | 30.355 µg/L No EPA limit set Highest in the ZIP: BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 2/4 | SYR4 |
| Bromodichloromethane | 3.754 µg/L No EPA limit set Main supplier: ADA · 22,600 people · 2019
Highest in the ZIP: 24.055 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 3/4 | SYR4 |
| Lead | 9.6325 µg/L 64% of the EPA limit 15 µg/L Main supplier: ADA · 22,600 people · 2019
Highest in the ZIP: 18.392 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2018 | 4/4 | SYR4 |
| Dibromochloromethane | 2.825 µg/L No EPA limit set Main supplier: ADA · 22,600 people · 2019
Highest in the ZIP: 8.8385 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 4/4 | SYR4 |
| Monochloroacetic Acid | 8.368 µg/L No EPA limit set Highest in the ZIP: BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 2/4 | SYR4 |
| Gross Alpha, Excl. Radon And U | 4.483 pCi/L 30% of the EPA limit 15 pCi/L Main supplier: ADA · 22,600 people · 2017
Highest in the ZIP: 5.686 pCi/L — PONTOTOC CO RWD # 8 · 4,250 people · 2019 | 2/4 | SYR4 |
| Gross Beta Particle Activity | 3.89 pCi/L No EPA limit set Main supplier: ADA · 22,600 people · 2017 | 3/4 | SYR4 |
| Monobromoacetic Acid | 3.6495 µg/L No EPA limit set Highest in the ZIP: BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 2/4 | SYR4 |
| Bromoform | 0.9460 µg/L No EPA limit set Main supplier: ADA · 22,600 people · 2019
Highest in the ZIP: 3.542 µg/L — PONTOTOC CO RWD # 8 · 4,250 people · 2019 | 4/4 | SYR4 |
| Dibromoacetic Acid | 2.612 µg/L No EPA limit set Highest in the ZIP: BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 2/4 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 2.6 µg/L 43% of the EPA limit 6 µg/L Main supplier: ADA · 22,600 people · 2019 | 1/4 | SYR4 |
| Combined Radium (-226 And -228) | 1.45825 pCi/L 29% of the EPA limit 5 pCi/L Main supplier: ADA · 22,600 people · 2017 | 3/4 | SYR4 |
| Antimony, Total | 1.26 µg/L 21% of the EPA limit 6 µg/L Main supplier: ADA · 22,600 people · 2015 | 1/4 | SYR4 |
| Selenium | 1.1 µg/L 2.2% of the EPA limit 50 µg/L Highest in the ZIP: PONTOTOC CO RWD # 8 · 4,250 people · 2019 | 1/4 | 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 | 1/4 | SYR4 |
| Arsenic | 0.6884 µg/L 6.9% of the EPA limit 10 µg/L Main supplier: ADA · 22,600 people · 2017 | 1/4 | SYR4 |
| Chromium | 0.5600 µg/L 0.6% of the EPA limit 100 µg/L Highest in the ZIP: PONTOTOC CO RWD # 8 · 4,250 people · 2019 | 1/4 | SYR4 |
| Lead | 0.0017 mg/L 12% of the EPA limit 0.0150 mg/L Main supplier: ADA · 22,600 people · 2025
Highest in the ZIP: 0.0023 mg/L — PONTOTOC CO RWD # 8 · 4,250 people · 2025 | 4/4 | 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 74820
| Supplier | State | Population served |
|---|---|---|
| ADA | OK | 22,600 |
| BRYAN CO. RWS & SWMD #2 | OK | 6,270 |
| PONTOTOC CO RWD # 7 | OK | 4,863 |
| PONTOTOC CO RWD # 8 | OK | 4,250 |
Frequently asked questions about ZIP 74820 tap water
Is the tap water in ZIP 74820 safe to drink?
EPA testing detected 26 contaminants across the water suppliers serving ZIP 74820. 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 74820?
4 public water suppliers report EPA drinking-water monitoring for ZIP 74820. Each is listed above with its population served.
What contaminants are in ZIP 74820's water?
EPA monitoring detected Nitrate-Nitrite, Fluoride, Copper, TTHM, Chloroform, and others across this ZIP's suppliers. The full list with levels and sources is above.