What was found in Benton'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 |
|---|---|---|---|
| Fluoride | 940 µg/L 24% of the EPA limit 4000 µg/L Main supplier: BENTON WATERWORKS · 30,681 people · 2019
Highest in the city: 1211.4999999999995 µg/L — ARKANSAS HEALTH CENTER · 700 people · 2019 | 2/4 | SYR4 |
| Copper | 217 µg/L 17% of the EPA limit 1300 µg/L Main supplier: BENTON WATERWORKS · 30,681 people · 2019
Highest in the city: 760 µg/L — ARKANSAS HEALTH CENTER · 700 people · 2017 | 4/4 | SYR4 |
| Nitrate-Nitrite | 340 µg/L 3.4% of the EPA limit 10000 µg/L Main supplier: BENTON WATERWORKS · 30,681 people · 2019 | 1/4 | SYR4 |
| TTHM | 67.59999999999995 µg/L 84% of the EPA limit 80 µg/L Main supplier: BENTON WATERWORKS · 30,681 people · 2019
Highest in the city: 97.99 µg/L — ARKANSAS HEALTH CENTER · 700 people · 2019 | 4/4 | SYR4 |
| Chloroform | 49.349999999999994 µg/L No EPA limit set Main supplier: BENTON WATERWORKS · 30,681 people · 2019
Highest in the city: 80.2 µg/L — ARKANSAS HEALTH CENTER · 700 people · 2019 | 4/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 28.269999999999975 µg/L 47% of the EPA limit 60 µg/L Main supplier: BENTON WATERWORKS · 30,681 people · 2019
Highest in the city: 48.625 µg/L — ARKANSAS HEALTH CENTER · 700 people · 2019 | 4/4 | SYR4 |
| Trichloroacetic Acid | 11.539999999999997 µg/L No EPA limit set Main supplier: BENTON WATERWORKS · 30,681 people · 2019
Highest in the city: 27.1 µg/L — ARKANSAS HEALTH CENTER · 700 people · 2019 | 4/4 | SYR4 |
| Dichloroacetic Acid | 13.839999999999998 µg/L No EPA limit set Main supplier: BENTON WATERWORKS · 30,681 people · 2019
Highest in the city: 26.275 µg/L — ARKANSAS HEALTH CENTER · 700 people · 2019 | 4/4 | SYR4 |
| Bromodichloromethane | 13.55 µg/L No EPA limit set Main supplier: BENTON WATERWORKS · 30,681 people · 2019
Highest in the city: 14.619999999999996 µg/L — SOUTHWEST WATER USERS LLC · 9,573 people · 2019 | 4/4 | SYR4 |
| Lead | 11.25 µg/L 75% of the EPA limit 15 µg/L Main supplier: BENTON WATERWORKS · 30,681 people · 2019 | 4/4 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 8.92 µg/L 149% of the EPA limit, at the 95th percentile of samples — 6 µg/L Highest in the city: ARKANSAS HEALTH CENTER · 700 people · 2019 | 1/4 | SYR4 |
| Monochloroacetic Acid | 5.9 µg/L No EPA limit set Main supplier: BENTON WATERWORKS · 30,681 people · 2019 | 4/4 | SYR4 |
| Dibromochloromethane | 4.074999999999999 µg/L No EPA limit set Main supplier: BENTON WATERWORKS · 30,681 people · 2019
Highest in the city: 4.14 µg/L — SOUTHWEST WATER USERS LLC · 9,573 people · 2019 | 4/4 | SYR4 |
| Xylenes, Total | 4.068 µg/L 0% of the EPA limit 10000 µg/L Highest in the city: ARKANSAS HEALTH CENTER · 700 people · 2019 | 1/4 | SYR4 |
| Gross Beta Particle Activity | 2.8 pCi/L No EPA limit set Main supplier: BENTON WATERWORKS · 30,681 people · 2019
Highest in the city: 4 pCi/L — ARKANSAS HEALTH CENTER · 700 people · 2019 | 2/4 | SYR4 |
| Monobromoacetic Acid | 1.57 µg/L No EPA limit set Main supplier: BENTON WATERWORKS · 30,681 people · 2019
Highest in the city: 2.1 µg/L — ARKANSAS HEALTH CENTER · 700 people · 2019 | 4/4 | SYR4 |
| Dibromoacetic Acid | 1.17 µg/L No EPA limit set Main supplier: BENTON WATERWORKS · 30,681 people · 2019
Highest in the city: 1.19 µg/L — ARKANSAS HEALTH CENTER · 700 people · 2019 | 4/4 | SYR4 |
| Ethylbenzene | 0.9985 µg/L 0.1% of the EPA limit 700 µg/L Highest in the city: ARKANSAS HEALTH CENTER · 700 people · 2019 | 1/4 | SYR4 |
| Benzo(A)Pyrene | 0.0900 µg/L 45% of the EPA limit 0.2000 µg/L Highest in the city: ARKANSAS HEALTH CENTER · 700 people · 2019 | 1/4 | SYR4 |
| Lead | 0.0010 mg/L 6.7% of the EPA limit 0.0150 mg/L Main supplier: BENTON WATERWORKS · 30,681 people · 2025
Highest in the city: 0.0020 mg/L — ARKANSAS HEALTH CENTER · 700 people · 2002 | 4/4 | 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 Benton
| Supplier | Population served |
|---|---|
| BENTON WATERWORKS | 30,681 |
| SALEM WATER USERS LLC | 22,775 |
| SOUTHWEST WATER USERS LLC | 9,573 |
| ARKANSAS HEALTH CENTER | 700 |
Frequently asked questions about Benton tap water
Is Benton tap water safe to drink?
EPA testing detected 20 contaminants in the water serving Benton. 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 Benton?
4 public water suppliers report drinking-water monitoring for Benton, Arkansas to the EPA. Each is listed above with its population served.
What contaminants are in Benton's water?
The contaminants EPA monitoring detected in Benton include Fluoride, Copper, 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.