What was found in ZIP 74012
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 | 860 µg/L 8.6% of the EPA limit 10000 µg/L Main supplier: TULSA · 413,000 people · 2019
Highest in the ZIP: 1206.05 µg/L — BROKEN ARROW MUNICIPAL AUTHORITY · 116,330 people · 2019 | 3/3 | SYR4 |
| Fluoride | 820 µg/L 21% of the EPA limit 4000 µg/L Main supplier: TULSA · 413,000 people · 2019 | 2/3 | SYR4 |
| Copper | 350 µg/L 27% of the EPA limit 1300 µg/L Main supplier: TULSA · 413,000 people · 2019
Highest in the ZIP: 621 µg/L — BROKEN ARROW MUNICIPAL AUTHORITY · 116,330 people · 2019 | 3/3 | SYR4 |
| Chlorite | 395.2 µg/L 40% of the EPA limit 1000 µg/L Main supplier: TULSA · 413,000 people · 2019 | 1/3 | SYR4 |
| TTHM | 56.375 µg/L 70% of the EPA limit 80 µg/L Main supplier: TULSA · 413,000 people · 2019
Highest in the ZIP: 122.275 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 32.03 µg/L 53% of the EPA limit 60 µg/L Main supplier: TULSA · 413,000 people · 2019
Highest in the ZIP: 102.15 µg/L — BROKEN ARROW MUNICIPAL AUTHORITY · 116,330 people · 2019 | 3/3 | SYR4 |
| Chloroform | 34 µg/L No EPA limit set Main supplier: TULSA · 413,000 people · 2019
Highest in the ZIP: 94.645 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 3/3 | SYR4 |
| Barium | 65.6 µg/L 3.3% of the EPA limit 2000 µg/L Main supplier: TULSA · 413,000 people · 2012 | 3/3 | SYR4 |
| Trichloroacetic Acid | 12.75 µg/L No EPA limit set Main supplier: TULSA · 413,000 people · 2019
Highest in the ZIP: 36.03 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 3/3 | SYR4 |
| Dichloroacetic Acid | 16 µg/L No EPA limit set Main supplier: TULSA · 413,000 people · 2019
Highest in the ZIP: 31.492 µg/L — BROKEN ARROW MUNICIPAL AUTHORITY · 116,330 people · 2019 | 3/3 | SYR4 |
| Bromodichloromethane | 16.065 µg/L No EPA limit set Main supplier: TULSA · 413,000 people · 2019
Highest in the ZIP: 24.055 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 3/3 | SYR4 |
| Lead | 5.9875 µg/L 40% of the EPA limit 15 µg/L Main supplier: TULSA · 413,000 people · 2019
Highest in the ZIP: 18.392 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2018 | 3/3 | SYR4 |
| Dibromochloromethane | 8.895 µg/L No EPA limit set Main supplier: TULSA · 413,000 people · 2019
Highest in the ZIP: 12.59 µg/L — BROKEN ARROW MUNICIPAL AUTHORITY · 116,330 people · 2019 | 3/3 | SYR4 |
| Monochloroacetic Acid | 3.475 µg/L No EPA limit set Main supplier: TULSA · 413,000 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 | 7.05 pCi/L No EPA limit set Highest in the ZIP: BROKEN ARROW MUNICIPAL AUTHORITY · 116,330 people · 2016 | 2/3 | SYR4 |
| Monobromoacetic Acid | 1.485 µg/L No EPA limit set Main supplier: TULSA · 413,000 people · 2019
Highest in the ZIP: 3.6495 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 3/3 | SYR4 |
| Bromoform | 1.6 µg/L No EPA limit set Main supplier: TULSA · 413,000 people · 2019
Highest in the ZIP: 3.24 µg/L — BROKEN ARROW MUNICIPAL AUTHORITY · 116,330 people · 2019 | 3/3 | SYR4 |
| Dibromoacetic Acid | 2.62 µg/L No EPA limit set Main supplier: TULSA · 413,000 people · 2019
Highest in the ZIP: 3.188 µg/L — BROKEN ARROW MUNICIPAL AUTHORITY · 116,330 people · 2019 | 3/3 | SYR4 |
| Glyphosate | 2.2 µg/L 0.3% of the EPA limit 700 µg/L Main supplier: TULSA · 413,000 people · 2019 | 1/3 | SYR4 |
| Combined Radium (-226 And -228) | 1.095 pCi/L 22% of the EPA limit 5 pCi/L Highest in the ZIP: BRYAN CO. RWS & SWMD #2 · 6,270 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 |
| Atrazine | 0.4624 µg/L 15% of the EPA limit 3 µg/L Main supplier: TULSA · 413,000 people · 2019 | 2/3 | SYR4 |
| PFOS | 0.0513 µg/L No EPA limit set Highest in the ZIP: BROKEN ARROW MUNICIPAL AUTHORITY · 116,330 people · 2023 | 1/3 | UCMR-5 |
| PFHXS | 0.0152 µg/L No EPA limit set Highest in the ZIP: BROKEN ARROW MUNICIPAL AUTHORITY · 116,330 people · 2023 | 1/3 | UCMR-5 |
| Pfhxa | 0.0069 µg/L No EPA limit set Highest in the ZIP: BROKEN ARROW MUNICIPAL AUTHORITY · 116,330 people · 2023 | 1/3 | UCMR-5 |
| Pfpea | 0.0065 µg/L No EPA limit set Highest in the ZIP: BROKEN ARROW MUNICIPAL AUTHORITY · 116,330 people · 2023 | 1/3 | UCMR-5 |
| Pfba | 0.0064 µg/L No EPA limit set Highest in the ZIP: BROKEN ARROW MUNICIPAL AUTHORITY · 116,330 people · 2023 | 1/3 | UCMR-5 |
| PFBS | 0.0045 µg/L No EPA limit set Highest in the ZIP: BROKEN ARROW MUNICIPAL AUTHORITY · 116,330 people · 2023 | 1/3 | UCMR-5 |
| Lead | 0.0012 mg/L 8% of the EPA limit 0.0150 mg/L Main supplier: TULSA · 413,000 people · 2025
Highest in the ZIP: 0.0020 mg/L — BROKEN ARROW MUNICIPAL AUTHORITY · 116,330 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 74012
| Supplier | State | Population served |
|---|---|---|
| TULSA | OK | 413,000 |
| BROKEN ARROW MUNICIPAL AUTHORITY | OK | 116,330 |
| BRYAN CO. RWS & SWMD #2 | OK | 6,270 |
Frequently asked questions about ZIP 74012 tap water
Is the tap water in ZIP 74012 safe to drink?
EPA testing detected 29 contaminants across the water suppliers serving ZIP 74012. 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 74012?
3 public water suppliers report EPA drinking-water monitoring for ZIP 74012. Each is listed above with its population served.
What contaminants are in ZIP 74012's water?
EPA monitoring detected Nitrate-Nitrite, Fluoride, Copper, Chlorite, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.