What was found in ZIP 73020
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 | 959 µg/L 24% of the EPA limit 4000 µg/L Main supplier: MIDWEST CITY · 55,935 people · 2018 | 2/3 | SYR4 |
| Nitrate-Nitrite | 421.5 µg/L 4.2% of the EPA limit 10000 µg/L Main supplier: MIDWEST CITY · 55,935 people · 2019
Highest in the ZIP: 890 µg/L — CHOCTAW UA · 3,926 people · 2019 | 3/3 | SYR4 |
| Barium | 514.2 µg/L 26% of the EPA limit 2000 µg/L Main supplier: MIDWEST CITY · 55,935 people · 2018 | 3/3 | SYR4 |
| Copper | 240.4 µg/L 18% of the EPA limit 1300 µg/L Main supplier: MIDWEST CITY · 55,935 people · 2019
Highest in the ZIP: 288.5 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2018 | 3/3 | SYR4 |
| Chlorite | 233.8 µg/L 23% of the EPA limit 1000 µg/L Main supplier: MIDWEST CITY · 55,935 people · 2019 | 1/3 | SYR4 |
| TTHM | 100.925 µg/L 126% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: MIDWEST CITY · 55,935 people · 2019
Highest in the ZIP: 122.275 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 3/3 | SYR4 |
| Chloroform | 50.475 µg/L No EPA limit set Main supplier: MIDWEST CITY · 55,935 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) | 34.45 µg/L 57% of the EPA limit 60 µg/L Main supplier: MIDWEST CITY · 55,935 people · 2019
Highest in the ZIP: 62.71 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 2/3 | SYR4 |
| Trichloroacetic Acid | 17.05 µg/L No EPA limit set Main supplier: MIDWEST CITY · 55,935 people · 2019
Highest in the ZIP: 36.03 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 2/3 | SYR4 |
| Dichloroacetic Acid | 14.25 µg/L No EPA limit set Main supplier: MIDWEST CITY · 55,935 people · 2019
Highest in the ZIP: 30.355 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 2/3 | SYR4 |
| Bromodichloromethane | 29.2 µg/L No EPA limit set Main supplier: MIDWEST CITY · 55,935 people · 2019 | 3/3 | SYR4 |
| Chromium | 15.5 µg/L 16% of the EPA limit 100 µg/L Main supplier: MIDWEST CITY · 55,935 people · 2018
Highest in the ZIP: 20.17 µg/L — CHOCTAW UA · 3,926 people · 2018 | 2/3 | SYR4 |
| Lead | 17.18 µg/L 115% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: MIDWEST CITY · 55,935 people · 2019
Highest in the ZIP: 18.392 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2018 | 2/3 | SYR4 |
| Lithium | 17.4 µg/L No EPA limit set Main supplier: MIDWEST CITY · 55,935 people · 2025
Highest in the ZIP: 18.1 µg/L — CHOCTAW UA · 3,926 people · 2024 | 2/3 | UCMR-5 |
| Dibromochloromethane | 14.16 µg/L No EPA limit set Main supplier: MIDWEST CITY · 55,935 people · 2019 | 3/3 | SYR4 |
| Gross Alpha, Excl. Radon And U | 7.2225 pCi/L 48% of the EPA limit 15 pCi/L Main supplier: MIDWEST CITY · 55,935 people · 2018
Highest in the ZIP: 14.1485 pCi/L — CHOCTAW UA · 3,926 people · 2019 | 2/3 | SYR4 |
| Monochloroacetic Acid | 3.33 µg/L No EPA limit set Main supplier: MIDWEST CITY · 55,935 people · 2019
Highest in the ZIP: 8.368 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 2/3 | SYR4 |
| Combined Uranium | 3.66 µg/L 12% of the EPA limit 30 µg/L Main supplier: MIDWEST CITY · 55,935 people · 2018
Highest in the ZIP: 7.58 µg/L — CHOCTAW UA · 3,926 people · 2019 | 2/3 | SYR4 |
| Gross Beta Particle Activity | 4.14 pCi/L No EPA limit set Main supplier: MIDWEST CITY · 55,935 people · 2018
Highest in the ZIP: 6.4363 pCi/L — CHOCTAW UA · 3,926 people · 2019 | 3/3 | SYR4 |
| Monobromoacetic Acid | 1.133 µg/L No EPA limit set Main supplier: MIDWEST CITY · 55,935 people · 2019
Highest in the ZIP: 3.6495 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 2/3 | SYR4 |
| Bromoform | 3.1215 µg/L No EPA limit set Main supplier: MIDWEST CITY · 55,935 people · 2019 | 2/3 | SYR4 |
| Dibromoacetic Acid | 2.938 µg/L No EPA limit set Main supplier: MIDWEST CITY · 55,935 people · 2019 | 2/3 | SYR4 |
| Arsenic | 2.9 µg/L 29% of the EPA limit 10 µg/L Highest in the ZIP: CHOCTAW UA · 3,926 people · 2019 | 1/3 | SYR4 |
| Combined Radium (-226 And -228) | 2.6435 pCi/L 53% of the EPA limit 5 pCi/L Main supplier: MIDWEST CITY · 55,935 people · 2018 | 3/3 | SYR4 |
| Dalapon | 1.64 µg/L 0.8% of the EPA limit 200 µg/L Main supplier: MIDWEST CITY · 55,935 people · 2019 | 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 | 0.0012 mg/L 8% of the EPA limit 0.0150 mg/L Main supplier: MIDWEST CITY · 55,935 people · 2025
Highest in the ZIP: 0.0114 mg/L — CHOCTAW UA · 3,926 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 73020
| Supplier | State | Population served |
|---|---|---|
| MIDWEST CITY | OK | 55,935 |
| BRYAN CO. RWS & SWMD #2 | OK | 6,270 |
| CHOCTAW UA | 3,926 |
Frequently asked questions about ZIP 73020 tap water
Is the tap water in ZIP 73020 safe to drink?
EPA testing detected 27 contaminants across the water suppliers serving ZIP 73020. 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 73020?
3 public water suppliers report EPA drinking-water monitoring for ZIP 73020. Each is listed above with its population served.
What contaminants are in ZIP 73020's water?
EPA monitoring detected Fluoride, Nitrate-Nitrite, Barium, Copper, Chlorite, and others across this ZIP's suppliers. The full list with levels and sources is above.