What was found in ZIP 74074
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 | 1204 µg/L 12% of the EPA limit 10000 µg/L Main supplier: STILLWATER UTILITIES AUTHORITY · 53,000 people · 2019 | 1/1 | SYR4 |
| Nitrate | 1111 µg/L 11% of the EPA limit 10000 µg/L Main supplier: STILLWATER UTILITIES AUTHORITY · 53,000 people · 2019 | 1/1 | SYR4 |
| Fluoride | 928 µg/L 23% of the EPA limit 4000 µg/L Main supplier: STILLWATER UTILITIES AUTHORITY · 53,000 people · 2019 | 1/1 | SYR4 |
| Copper | 117 µg/L 9% of the EPA limit 1300 µg/L Main supplier: STILLWATER UTILITIES AUTHORITY · 53,000 people · 2018 | 1/1 | SYR4 |
| Barium | 51.85 µg/L 2.6% of the EPA limit 2000 µg/L Main supplier: STILLWATER UTILITIES AUTHORITY · 53,000 people · 2015 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 31.9 µg/L 53% of the EPA limit 60 µg/L Main supplier: STILLWATER UTILITIES AUTHORITY · 53,000 people · 2019 | 1/1 | SYR4 |
| TTHM | 31.275 µg/L 39% of the EPA limit 80 µg/L Main supplier: STILLWATER UTILITIES AUTHORITY · 53,000 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 22.2 µg/L No EPA limit set Main supplier: STILLWATER UTILITIES AUTHORITY · 53,000 people · 2019 | 1/1 | SYR4 |
| Lithium | 21.6 µg/L No EPA limit set Main supplier: STILLWATER UTILITIES AUTHORITY · 53,000 people · 2024 | 1/1 | UCMR-5 |
| Lead | 21.4 µg/L 143% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: STILLWATER UTILITIES AUTHORITY · 53,000 people · 2018 | 1/1 | SYR4 |
| Chloroform | 16.9 µg/L No EPA limit set Main supplier: STILLWATER UTILITIES AUTHORITY · 53,000 people · 2019 | 1/1 | SYR4 |
| Cyanide | 15 µg/L 7.5% of the EPA limit 200 µg/L Main supplier: STILLWATER UTILITIES AUTHORITY · 53,000 people · 2012 | 1/1 | SYR4 |
| Bromodichloromethane | 11.6 µg/L No EPA limit set Main supplier: STILLWATER UTILITIES AUTHORITY · 53,000 people · 2019 | 1/1 | SYR4 |
| Bromate | 9.146 µg/L 91% of the EPA limit 10 µg/L Main supplier: STILLWATER UTILITIES AUTHORITY · 53,000 people · 2019 | 1/1 | SYR4 |
| Selenium | 8 µg/L 16% of the EPA limit 50 µg/L Main supplier: STILLWATER UTILITIES AUTHORITY · 53,000 people · 2015 | 1/1 | SYR4 |
| Dibromochloromethane | 6.9195 µg/L No EPA limit set Main supplier: STILLWATER UTILITIES AUTHORITY · 53,000 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 6.2875 µg/L No EPA limit set Main supplier: STILLWATER UTILITIES AUTHORITY · 53,000 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 6.236 µg/L No EPA limit set Main supplier: STILLWATER UTILITIES AUTHORITY · 53,000 people · 2019 | 1/1 | SYR4 |
| Gross Beta Particle Activity | 5 pCi/L No EPA limit set Main supplier: STILLWATER UTILITIES AUTHORITY · 53,000 people · 2014 | 1/1 | SYR4 |
| Dibromoacetic Acid | 4.535 µg/L No EPA limit set Main supplier: STILLWATER UTILITIES AUTHORITY · 53,000 people · 2019 | 1/1 | SYR4 |
| Bromoform | 4.0075 µg/L No EPA limit set Main supplier: STILLWATER UTILITIES AUTHORITY · 53,000 people · 2019 | 1/1 | SYR4 |
| Monobromoacetic Acid | 2.048 µg/L No EPA limit set Main supplier: STILLWATER UTILITIES AUTHORITY · 53,000 people · 2019 | 1/1 | SYR4 |
| Gross Alpha, Excl. Radon And U | 1.05 pCi/L 7% of the EPA limit 15 pCi/L Main supplier: STILLWATER UTILITIES AUTHORITY · 53,000 people · 2014 | 1/1 | SYR4 |
| Combined Radium (-226 And -228) | 0.1580 pCi/L 3.2% of the EPA limit 5 pCi/L Main supplier: STILLWATER UTILITIES AUTHORITY · 53,000 people · 2014 | 1/1 | SYR4 |
| PFOS | 0.0086 µg/L No EPA limit set Main supplier: STILLWATER UTILITIES AUTHORITY · 53,000 people · 2024 | 1/1 | UCMR-5 |
| PFHXS | 0.0064 µg/L No EPA limit set Main supplier: STILLWATER UTILITIES AUTHORITY · 53,000 people · 2024 | 1/1 | UCMR-5 |
| Pfhxa | 0.0049 µg/L No EPA limit set Main supplier: STILLWATER UTILITIES AUTHORITY · 53,000 people · 2024 | 1/1 | UCMR-5 |
| Pfpea | 0.0044 µg/L No EPA limit set Main supplier: STILLWATER UTILITIES AUTHORITY · 53,000 people · 2024 | 1/1 | UCMR-5 |
| PFBS | 0.0030 µg/L No EPA limit set Main supplier: STILLWATER UTILITIES AUTHORITY · 53,000 people · 2024 | 1/1 | UCMR-5 |
| Lead | 0.0021 mg/L 14% of the EPA limit 0.0150 mg/L Main supplier: STILLWATER UTILITIES AUTHORITY · 53,000 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 74074
| Supplier | State | Population served |
|---|---|---|
| STILLWATER UTILITIES AUTHORITY | OK | 53,000 |
Frequently asked questions about ZIP 74074 tap water
Is the tap water in ZIP 74074 safe to drink?
EPA testing detected 30 contaminants across the water suppliers serving ZIP 74074. 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 74074?
1 public water supplier report EPA drinking-water monitoring for ZIP 74074. Each is listed above with its population served.
What contaminants are in ZIP 74074's water?
EPA monitoring detected Nitrate-Nitrite, Nitrate, Fluoride, Copper, Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.