What was found in Monticello'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 | 1650 µg/L 41% of the EPA limit 4000 µg/L Main supplier: MONTICELLO WATER DEPARTMENT · 8,442 people · 2019 | 1/6 | SYR4 |
| Nitrate-Nitrite | 470 µg/L 4.7% of the EPA limit 10000 µg/L Main supplier: MONTICELLO WATER DEPARTMENT · 8,442 people · 2019 | 1/6 | SYR4 |
| Nitrate | 390 µg/L 3.9% of the EPA limit 10000 µg/L Main supplier: MONTICELLO WATER DEPARTMENT · 8,442 people · 2019 | 1/6 | SYR4 |
| Copper | 367.7 µg/L 28% of the EPA limit 1300 µg/L Main supplier: MONTICELLO WATER DEPARTMENT · 8,442 people · 2019 | 6/6 | SYR4 |
| Nitrite | 322.5 µg/L 32% of the EPA limit 1000 µg/L Main supplier: MONTICELLO WATER DEPARTMENT · 8,442 people · 2019 | 1/6 | SYR4 |
| Cyanide | 170 µg/L 85% of the EPA limit 200 µg/L Main supplier: MONTICELLO WATER DEPARTMENT · 8,442 people · 2019 | 1/6 | SYR4 |
| TTHM | 9.97 µg/L 12% of the EPA limit 80 µg/L Main supplier: MONTICELLO WATER DEPARTMENT · 8,442 people · 2019
Highest in the city: 20.175 µg/L — GREEN HILL-BROOKS CHAPEL WATER · 597 people · 2019 | 6/6 | SYR4 |
| Lead | 4.5 µg/L 30% of the EPA limit 15 µg/L Main supplier: MONTICELLO WATER DEPARTMENT · 8,442 people · 2019
Highest in the city: 14.05 µg/L — SELMA WATER ASSOCIATION · 1,600 people · 2017 | 5/6 | SYR4 |
| Total Haloacetic Acids (HAA5) | 5.84 µg/L 9.7% of the EPA limit 60 µg/L Main supplier: MONTICELLO WATER DEPARTMENT · 8,442 people · 2019
Highest in the city: 13.1 µg/L — GREEN HILL-BROOKS CHAPEL WATER · 597 people · 2019 | 6/6 | SYR4 |
| Chloroform | 5.95 µg/L No EPA limit set Main supplier: MONTICELLO WATER DEPARTMENT · 8,442 people · 2019
Highest in the city: 11.775 µg/L — GREEN HILL-BROOKS CHAPEL WATER · 597 people · 2019 | 6/6 | SYR4 |
| Trichloroacetic Acid | 2.985 µg/L No EPA limit set Main supplier: MONTICELLO WATER DEPARTMENT · 8,442 people · 2019
Highest in the city: 6.305 µg/L — GREEN HILL-BROOKS CHAPEL WATER · 597 people · 2019 | 6/6 | SYR4 |
| Bromodichloromethane | 4.404 µg/L No EPA limit set Main supplier: MONTICELLO WATER DEPARTMENT · 8,442 people · 2019
Highest in the city: 5.73 µg/L — GREEN HILL-BROOKS CHAPEL WATER · 597 people · 2019 | 3/6 | SYR4 |
| Dichloroacetic Acid | 2.64 µg/L No EPA limit set Main supplier: MONTICELLO WATER DEPARTMENT · 8,442 people · 2019
Highest in the city: 5.175 µg/L — SELMA WATER ASSOCIATION · 1,600 people · 2019 | 6/6 | SYR4 |
| Dibromochloromethane | 2.612 µg/L No EPA limit set Main supplier: MONTICELLO WATER DEPARTMENT · 8,442 people · 2019
Highest in the city: 3.41 µg/L — GREEN HILL-BROOKS CHAPEL WATER · 597 people · 2019 | 3/6 | SYR4 |
| Monobromoacetic Acid | 2.795 µg/L No EPA limit set Main supplier: MONTICELLO WATER DEPARTMENT · 8,442 people · 2019 | 2/6 | SYR4 |
| Dibromoacetic Acid | 1.195 µg/L No EPA limit set Highest in the city: BOWSER WATER ASSN · 635 people · 2019 | 3/6 | SYR4 |
| Xylenes, Total | 0.5600 µg/L 0% of the EPA limit 10000 µg/L Main supplier: MONTICELLO WATER DEPARTMENT · 8,442 people · 2019 | 1/6 | SYR4 |
| Lead | 0.0010 mg/L 6.7% of the EPA limit 0.0150 mg/L Main supplier: MONTICELLO WATER DEPARTMENT · 8,442 people · 2025
Highest in the city: 0.0040 mg/L — LACEY-LADELLE WATER ASSOCIATIO · 1,438 people · 2004 | 6/6 | 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 Monticello
| Supplier | Population served |
|---|---|
| MONTICELLO WATER DEPARTMENT | 8,442 |
| SELMA WATER ASSOCIATION | 1,600 |
| LACEY-LADELLE WATER ASSOCIATIO | 1,438 |
| BOWSER WATER ASSN | 635 |
| GREEN HILL-BROOKS CHAPEL WATER | 597 |
| ENON WATER ASSOCIATION | 488 |
Frequently asked questions about Monticello tap water
Is Monticello tap water safe to drink?
EPA testing detected 18 contaminants in the water serving Monticello. 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 Monticello?
6 public water suppliers report drinking-water monitoring for Monticello, Arkansas to the EPA. Each is listed above with its population served.
What contaminants are in Monticello's water?
The contaminants EPA monitoring detected in Monticello include Fluoride, Nitrate-Nitrite, Nitrate, Copper, Nitrite. 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.