What was found in Mannford'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 |
|---|---|---|---|
| Copper | 78.1 µg/L 6% of the EPA limit 1300 µg/L Main supplier: MANNFORD · 3,935 people · 2019
Highest in the city: 317.79999999999944 µg/L — CREEK CO RWD # 5 · 2,500 people · 2017 | 2/2 | SYR4 |
| Fluoride | 238.5 µg/L 6% of the EPA limit 4000 µg/L Highest in the city: CREEK CO RWD # 5 · 2,500 people · 2019 | 1/2 | SYR4 |
| Nitrate-Nitrite | 210 µg/L 2.1% of the EPA limit 10000 µg/L Main supplier: MANNFORD · 3,935 people · 2019 | 2/2 | SYR4 |
| TTHM | 118.79999999999998 µg/L 149% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: MANNFORD · 3,935 people · 2019 | 2/2 | SYR4 |
| Chloroform | 77.85999999999999 µg/L No EPA limit set Main supplier: MANNFORD · 3,935 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 77.52499999999999 µg/L 129% of the EPA limit, at the 95th percentile of samples — 60 µg/L Main supplier: MANNFORD · 3,935 people · 2019 | 1/2 | SYR4 |
| Barium | 43.1 µg/L 2.2% of the EPA limit 2000 µg/L Main supplier: MANNFORD · 3,935 people · 2013
Highest in the city: 59.714999999999996 µg/L — CREEK CO RWD # 5 · 2,500 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 37.315 µg/L No EPA limit set Main supplier: MANNFORD · 3,935 people · 2019 | 1/2 | SYR4 |
| Trichloroacetic Acid | 34.974999999999994 µg/L No EPA limit set Main supplier: MANNFORD · 3,935 people · 2019 | 1/2 | SYR4 |
| Bromodichloromethane | 31.15999999999998 µg/L No EPA limit set Main supplier: MANNFORD · 3,935 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 18.909999999999997 µg/L No EPA limit set Main supplier: MANNFORD · 3,935 people · 2019 | 2/2 | SYR4 |
| Chromium | 5.7 µg/L 5.7% of the EPA limit 100 µg/L Highest in the city: CREEK CO RWD # 5 · 2,500 people · 2019 | 1/2 | SYR4 |
| Monochloroacetic Acid | 5.6665 µg/L No EPA limit set Main supplier: MANNFORD · 3,935 people · 2019 | 1/2 | SYR4 |
| Gross Beta Particle Activity | 3.55 pCi/L No EPA limit set Main supplier: MANNFORD · 3,935 people · 2016
Highest in the city: 4.2059999999999995 pCi/L — CREEK CO RWD # 5 · 2,500 people · 2019 | 2/2 | SYR4 |
| Arsenic | 3.9799999999999995 µg/L 40% of the EPA limit 10 µg/L Highest in the city: CREEK CO RWD # 5 · 2,500 people · 2019 | 1/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 3.944 pCi/L 26% of the EPA limit 15 pCi/L Highest in the city: CREEK CO RWD # 5 · 2,500 people · 2019 | 1/2 | SYR4 |
| Dibromoacetic Acid | 3.7159999999999997 µg/L No EPA limit set Main supplier: MANNFORD · 3,935 people · 2019 | 1/2 | SYR4 |
| Bromoform | 3.538 µg/L No EPA limit set Main supplier: MANNFORD · 3,935 people · 2019 | 2/2 | SYR4 |
| Combined Radium (-226 And -228) | 0.1300 pCi/L 2.6% of the EPA limit 5 pCi/L Main supplier: MANNFORD · 3,935 people · 2016
Highest in the city: 2.8554999999999997 pCi/L — CREEK CO RWD # 5 · 2,500 people · 2019 | 2/2 | SYR4 |
| Monobromoacetic Acid | 1.88 µg/L No EPA limit set Main supplier: MANNFORD · 3,935 people · 2019 | 1/2 | SYR4 |
| Xylenes, Total | 0.5000 µg/L 0% of the EPA limit 10000 µg/L Highest in the city: CREEK CO RWD # 5 · 2,500 people · 2019 | 1/2 | SYR4 |
| Mercury | 0.0795 µg/L 4% of the EPA limit 2 µg/L Highest in the city: CREEK CO RWD # 5 · 2,500 people · 2019 | 1/2 | SYR4 |
| Hexachlorocyclopentadiene | 0.0200 µg/L 0% of the EPA limit 50 µg/L Main supplier: MANNFORD · 3,935 people · 2018 | 1/2 | SYR4 |
| Pfba | 0.0076 µg/L No EPA limit set Main supplier: MANNFORD · 3,935 people · 2024 | 1/2 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: MANNFORD · 3,935 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 Mannford
| Supplier | Population served |
|---|---|
| MANNFORD | 3,935 |
| CREEK CO RWD # 5 | 2,500 |
Frequently asked questions about Mannford tap water
Is Mannford tap water safe to drink?
EPA testing detected 25 contaminants in the water serving Mannford. 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 Mannford?
2 public water suppliers report drinking-water monitoring for Mannford, Oklahoma to the EPA. Each is listed above with its population served.
What contaminants are in Mannford's water?
The contaminants EPA monitoring detected in Mannford include Copper, Fluoride, Nitrate-Nitrite, TTHM, Chloroform. 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.