What was found in Del City's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate-Nitrite | 2782.5 µg/L 28% of the EPA limit 10000 µg/L Main supplier: DEL CITY · 22,128 people · 2019
Highest in the city: 4170 µg/L — SKYLINE MHP · 120 people · 2019 | 2/2 | SYR4 |
| Barium | 657.05 µg/L 33% of the EPA limit 2000 µg/L Main supplier: DEL CITY · 22,128 people · 2015 | 2/2 | SYR4 |
| Fluoride | 638 µg/L 16% of the EPA limit 4000 µg/L Main supplier: DEL CITY · 22,128 people · 2016 | 1/2 | SYR4 |
| Copper | 423.5 µg/L 33% of the EPA limit 1300 µg/L Main supplier: DEL CITY · 22,128 people · 2019 | 2/2 | SYR4 |
| TTHM | 91.15 µg/L 114% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: DEL CITY · 22,128 people · 2019 | 2/2 | SYR4 |
| Chloroform | 29.87 µg/L No EPA limit set Main supplier: DEL CITY · 22,128 people · 2019 | 2/2 | SYR4 |
| Lithium | 28.5 µg/L No EPA limit set Main supplier: DEL CITY · 22,128 people · 2024 | 1/2 | UCMR-5 |
| Dibromochloromethane | 24.985 µg/L No EPA limit set Main supplier: DEL CITY · 22,128 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 23.67 µg/L No EPA limit set Main supplier: DEL CITY · 22,128 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 21.41 µg/L 36% of the EPA limit 60 µg/L Main supplier: DEL CITY · 22,128 people · 2019 | 1/2 | SYR4 |
| Lead | 20.005 µg/L 133% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: DEL CITY · 22,128 people · 2019 | 1/2 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 20 µg/L 333% of the EPA limit, at the 95th percentile of samples — 6 µg/L Main supplier: DEL CITY · 22,128 people · 2019 | 1/2 | SYR4 |
| Dichloroacetic Acid | 12.96 µg/L No EPA limit set Main supplier: DEL CITY · 22,128 people · 2019 | 1/2 | SYR4 |
| Bromoform | 11.825 µg/L No EPA limit set Main supplier: DEL CITY · 22,128 people · 2019 | 2/2 | SYR4 |
| Trichloroacetic Acid | 10.822 µg/L No EPA limit set Main supplier: DEL CITY · 22,128 people · 2019 | 1/2 | SYR4 |
| Chromium | 8.485 µg/L 8.5% of the EPA limit 100 µg/L Main supplier: DEL CITY · 22,128 people · 2015
Highest in the city: 8.9 µg/L — SKYLINE MHP · 120 people · 2017 | 2/2 | SYR4 |
| Monochloroacetic Acid | 8.0235 µg/L No EPA limit set Main supplier: DEL CITY · 22,128 people · 2019 | 1/2 | SYR4 |
| Gross Beta Particle Activity | 7.7415 pCi/L No EPA limit set Main supplier: DEL CITY · 22,128 people · 2019 | 2/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 6.27 pCi/L 42% of the EPA limit 15 pCi/L Main supplier: DEL CITY · 22,128 people · 2019 | 1/2 | SYR4 |
| Dibromoacetic Acid | 6.094 µg/L No EPA limit set Main supplier: DEL CITY · 22,128 people · 2019 | 1/2 | SYR4 |
| Arsenic | 3.88 µg/L 39% of the EPA limit 10 µg/L Main supplier: DEL CITY · 22,128 people · 2018 | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 2.5 pCi/L 50% of the EPA limit 5 pCi/L Main supplier: DEL CITY · 22,128 people · 2019 | 2/2 | SYR4 |
| Tetrachloroethylene | 2 µg/L 40% of the EPA limit 5 µg/L Main supplier: DEL CITY · 22,128 people · 2019 | 1/2 | SYR4 |
| Combined Uranium | 1.745 µg/L 5.8% of the EPA limit 30 µg/L Main supplier: DEL CITY · 22,128 people · 2019 | 1/2 | SYR4 |
| Monobromoacetic Acid | 1.494 µg/L No EPA limit set Main supplier: DEL CITY · 22,128 people · 2019 | 1/2 | SYR4 |
| Dichloromethane | 1.34 µg/L 27% of the EPA limit 5 µg/L Main supplier: DEL CITY · 22,128 people · 2019 | 1/2 | SYR4 |
| Pfba | 0.0070 µg/L No EPA limit set Main supplier: DEL CITY · 22,128 people · 2024 | 1/2 | UCMR-5 |
| Pfpea | 0.0059 µg/L No EPA limit set Main supplier: DEL CITY · 22,128 people · 2024 | 1/2 | UCMR-5 |
| Pfhxa | 0.0043 µg/L No EPA limit set Main supplier: DEL CITY · 22,128 people · 2024 | 1/2 | UCMR-5 |
| Lead | 0.0016 mg/L 11% of the EPA limit 0.0150 mg/L Main supplier: DEL CITY · 22,128 people · 2025 | 2/2 | 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.
These are the utilities' own EPA-reported results, not a city-wide
average. A detection means the lab measured the
substance — it isn't the same as exceeding a legal limit. Hover a source
tag to see the EPA program and years behind each figure.
Water suppliers serving Del City
| Supplier | Population served |
|---|---|
| DEL CITY | 22,128 |
| SKYLINE MHP | 120 |
Frequently asked questions about Del City tap water
Is Del City tap water safe to drink?
EPA testing detected 30 contaminants in the water serving Del City. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve Del City?
2 public water suppliers report drinking-water monitoring for Del City, Oklahoma to the EPA. Each is listed above with its population served.
What contaminants are in Del City's water?
The contaminants EPA monitoring detected in Del City include Nitrate-Nitrite, Barium, Fluoride, Copper, TTHM. The full list, with the level at the main supplier and the data source, is in the table above.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.