What was found in Dardanelle'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 | 2340 µg/L 23% of the EPA limit 10000 µg/L Highest in the city: DARDANELLE WATERWORKS · 4,517 people · 2019 | 1/2 | SYR4 |
| Nitrate | 2160 µg/L 22% of the EPA limit 10000 µg/L Highest in the city: DARDANELLE WATERWORKS · 4,517 people · 2019 | 1/2 | SYR4 |
| Copper | 427.5000000000001 µg/L 33% of the EPA limit 1300 µg/L Main supplier: NE YELL COUNTY WATER ASSOC · 7,198 people · 2018
Highest in the city: 1003.9999999999995 µg/L — DARDANELLE WATERWORKS · 4,517 people · 2017 | 2/2 | SYR4 |
| Fluoride | 910 µg/L 23% of the EPA limit 4000 µg/L Highest in the city: DARDANELLE WATERWORKS · 4,517 people · 2019 | 1/2 | SYR4 |
| TTHM | 108.54999999999997 µg/L 136% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: NE YELL COUNTY WATER ASSOC · 7,198 people · 2019 | 2/2 | SYR4 |
| Chloroform | 95.73999999999997 µg/L No EPA limit set Main supplier: NE YELL COUNTY WATER ASSOC · 7,198 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 42.2 µg/L 70% of the EPA limit 60 µg/L Main supplier: NE YELL COUNTY WATER ASSOC · 7,198 people · 2019 | 2/2 | SYR4 |
| Lead | 26.199999999999974 µg/L 175% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: NE YELL COUNTY WATER ASSOC · 7,198 people · 2018 | 2/2 | SYR4 |
| Dichloroacetic Acid | 24.1 µg/L No EPA limit set Main supplier: NE YELL COUNTY WATER ASSOC · 7,198 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 15.229999999999997 µg/L No EPA limit set Main supplier: NE YELL COUNTY WATER ASSOC · 7,198 people · 2019
Highest in the city: 23.444999999999993 µg/L — DARDANELLE WATERWORKS · 4,517 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 16.5 µg/L No EPA limit set Main supplier: NE YELL COUNTY WATER ASSOC · 7,198 people · 2019
Highest in the city: 22.799999999999997 µg/L — DARDANELLE WATERWORKS · 4,517 people · 2019 | 2/2 | SYR4 |
| Trichloroacetic Acid | 18.67999999999997 µg/L No EPA limit set Main supplier: NE YELL COUNTY WATER ASSOC · 7,198 people · 2019 | 2/2 | SYR4 |
| Monobromoacetic Acid | 8.7 µg/L No EPA limit set Main supplier: NE YELL COUNTY WATER ASSOC · 7,198 people · 2019 | 2/2 | SYR4 |
| Bromoform | 6.165000000000001 µg/L No EPA limit set Main supplier: NE YELL COUNTY WATER ASSOC · 7,198 people · 2019
Highest in the city: 7.819999999999999 µg/L — DARDANELLE WATERWORKS · 4,517 people · 2019 | 2/2 | SYR4 |
| Monochloroacetic Acid | 7.475 µg/L No EPA limit set Main supplier: NE YELL COUNTY WATER ASSOC · 7,198 people · 2019 | 2/2 | SYR4 |
| Dibromoacetic Acid | 4.2 µg/L No EPA limit set Main supplier: NE YELL COUNTY WATER ASSOC · 7,198 people · 2019 | 2/2 | SYR4 |
| Gross Beta Particle Activity | 4.165 pCi/L No EPA limit set Highest in the city: DARDANELLE WATERWORKS · 4,517 people · 2019 | 1/2 | SYR4 |
| Antimony, Total | 2.1 µg/L 35% of the EPA limit 6 µg/L Highest in the city: DARDANELLE WATERWORKS · 4,517 people · 2019 | 1/2 | SYR4 |
| Toluene | 1.38 µg/L 0.1% of the EPA limit 1000 µg/L Highest in the city: DARDANELLE WATERWORKS · 4,517 people · 2019 | 1/2 | SYR4 |
| Pfba | 0.0059 µg/L No EPA limit set Highest in the city: DARDANELLE WATERWORKS · 4,517 people · 2025 | 1/2 | UCMR-5 |
| PFHXS | 0.0053 µg/L No EPA limit set Highest in the city: DARDANELLE WATERWORKS · 4,517 people · 2025 | 1/2 | UCMR-5 |
| PFOS | 0.0044 µg/L No EPA limit set Highest in the city: DARDANELLE WATERWORKS · 4,517 people · 2025 | 1/2 | UCMR-5 |
| Lead | 0.0010 mg/L 6.7% of the EPA limit 0.0150 mg/L Main supplier: NE YELL COUNTY WATER ASSOC · 7,198 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 Dardanelle
| Supplier | Population served |
|---|---|
| NE YELL COUNTY WATER ASSOC | 7,198 |
| DARDANELLE WATERWORKS | 4,517 |
Frequently asked questions about Dardanelle tap water
Is Dardanelle tap water safe to drink?
EPA testing detected 23 contaminants in the water serving Dardanelle. 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 Dardanelle?
2 public water suppliers report drinking-water monitoring for Dardanelle, Arkansas to the EPA. Each is listed above with its population served.
What contaminants are in Dardanelle's water?
The contaminants EPA monitoring detected in Dardanelle include Nitrate-Nitrite, Nitrate, Copper, Fluoride, 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.