What was found in Harrison'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 | 387.2 µg/L 30% of the EPA limit 1300 µg/L Main supplier: HARRISON WATERWORKS · 17,455 people · 2019
Highest in the city: 782.45 µg/L — COTTONWOOD WATER ASSOCIATION · 820 people · 2019 | 4/4 | SYR4 |
| Lead | 90.98 µg/L 607% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: HARRISON WATERWORKS · 17,455 people · 2019
Highest in the city: 522 µg/L — COTTONWOOD WATER ASSOCIATION · 820 people · 2019 | 4/4 | SYR4 |
| Fluoride | 340 µg/L 8.5% of the EPA limit 4000 µg/L Highest in the city: KROOKED KREEK WATER ASSN · 2,250 people · 2019 | 2/4 | SYR4 |
| Nitrate-Nitrite | 290 µg/L 2.9% of the EPA limit 10000 µg/L Highest in the city: SW BOONE COUNTY WATER ASSOC · 4,558 people · 2019 | 1/4 | SYR4 |
| Cyanide | 76 µg/L 38% of the EPA limit 200 µg/L Highest in the city: SW BOONE COUNTY WATER ASSOC · 4,558 people · 2019 | 1/4 | SYR4 |
| TTHM | 72.575 µg/L 91% of the EPA limit 80 µg/L Main supplier: HARRISON WATERWORKS · 17,455 people · 2019 | 3/4 | SYR4 |
| Chloroform | 66.64 µg/L No EPA limit set Main supplier: HARRISON WATERWORKS · 17,455 people · 2019 | 4/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 43.54 µg/L 73% of the EPA limit 60 µg/L Main supplier: HARRISON WATERWORKS · 17,455 people · 2019 | 4/4 | SYR4 |
| Dichloroacetic Acid | 21.445 µg/L No EPA limit set Main supplier: HARRISON WATERWORKS · 17,455 people · 2019
Highest in the city: 23.4 µg/L — SW BOONE COUNTY WATER ASSOC · 4,558 people · 2019 | 4/4 | SYR4 |
| Trichloroacetic Acid | 21.29 µg/L No EPA limit set Main supplier: HARRISON WATERWORKS · 17,455 people · 2019
Highest in the city: 21.375 µg/L — SW BOONE COUNTY WATER ASSOC · 4,558 people · 2019 | 3/4 | SYR4 |
| Bromodichloromethane | 8.3 µg/L No EPA limit set Main supplier: HARRISON WATERWORKS · 17,455 people · 2019 | 3/4 | SYR4 |
| Monochloroacetic Acid | 3.16 µg/L No EPA limit set Main supplier: HARRISON WATERWORKS · 17,455 people · 2019
Highest in the city: 5.6 µg/L — COTTONWOOD WATER ASSOCIATION · 820 people · 2019 | 4/4 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 4.48 µg/L 75% of the EPA limit 6 µg/L Highest in the city: SW BOONE COUNTY WATER ASSOC · 4,558 people · 2019 | 1/4 | SYR4 |
| Gross Beta Particle Activity | 3.64 pCi/L No EPA limit set Highest in the city: KROOKED KREEK WATER ASSN · 2,250 people · 2017 | 2/4 | SYR4 |
| Monobromoacetic Acid | 2.08 µg/L No EPA limit set Main supplier: HARRISON WATERWORKS · 17,455 people · 2019
Highest in the city: 3.115 µg/L — KROOKED KREEK WATER ASSN · 2,250 people · 2019 | 4/4 | SYR4 |
| Dichloromethane | 1.9095 µg/L 38% of the EPA limit 5 µg/L Highest in the city: KROOKED KREEK WATER ASSN · 2,250 people · 2019 | 1/4 | SYR4 |
| Xylenes, Total | 1.819 µg/L 0% of the EPA limit 10000 µg/L Highest in the city: SW BOONE COUNTY WATER ASSOC · 4,558 people · 2019 | 1/4 | SYR4 |
| Dibromochloromethane | 1.435 µg/L No EPA limit set Main supplier: HARRISON WATERWORKS · 17,455 people · 2019
Highest in the city: 1.81816 µg/L — KROOKED KREEK WATER ASSN · 2,250 people · 2019 | 4/4 | SYR4 |
| Lead | 0.0050 mg/L 33% of the EPA limit 0.0150 mg/L Main supplier: HARRISON WATERWORKS · 17,455 people · 2024
Highest in the city: 0.0260 mg/L — COTTONWOOD WATER ASSOCIATION · 820 people · 2019 | 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 Harrison
| Supplier | Population served |
|---|---|
| HARRISON WATERWORKS | 17,455 |
| SW BOONE COUNTY WATER ASSOC | 4,558 |
| KROOKED KREEK WATER ASSN | 2,250 |
| COTTONWOOD WATER ASSOCIATION | 820 |
Frequently asked questions about Harrison tap water
Is Harrison tap water safe to drink?
EPA testing detected 19 contaminants in the water serving Harrison. 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 Harrison?
4 public water suppliers report drinking-water monitoring for Harrison, Arkansas to the EPA. Each is listed above with its population served.
What contaminants are in Harrison's water?
The contaminants EPA monitoring detected in Harrison include Copper, Lead, Fluoride, Nitrate-Nitrite, Cyanide. 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.