What was found in Marianna'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 | 1262.5 µg/L 97% of the EPA limit 1300 µg/L Highest in the city: MARIANNA WATERWORKS · 3,238 people · 2017 | 2/3 | SYR4 |
| Fluoride | 880 µg/L 22% of the EPA limit 4000 µg/L Highest in the city: MARIANNA WATERWORKS · 3,238 people · 2019 | 2/3 | SYR4 |
| Barium | 397 µg/L 20% of the EPA limit 2000 µg/L Highest in the city: MARIANNA WATERWORKS · 3,238 people · 2018 | 1/3 | SYR4 |
| Nitrate-Nitrite | 140 µg/L 1.4% of the EPA limit 10000 µg/L Highest in the city: MARIANNA WATERWORKS · 3,238 people · 2019 | 1/3 | SYR4 |
| TTHM | 116 µg/L 145% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: LEE COUNTY WATER ASSOCIATION · 3,770 people · 2019 | 3/3 | SYR4 |
| Bromoform | 107.9 µg/L No EPA limit set Main supplier: LEE COUNTY WATER ASSOCIATION · 3,770 people · 2019 | 3/3 | SYR4 |
| Cyanide | 100 µg/L 50% of the EPA limit 200 µg/L Highest in the city: ADC EAST ARKANSAS REGIONAL · 1,650 people · 2019 | 1/3 | SYR4 |
| Dichloroacetic Acid | 1.4 µg/L No EPA limit set Main supplier: LEE COUNTY WATER ASSOCIATION · 3,770 people · 2019
Highest in the city: 29.805 µg/L — MARIANNA WATERWORKS · 3,238 people · 2019 | 3/3 | SYR4 |
| Trichloroacetic Acid | 28.5 µg/L No EPA limit set Highest in the city: MARIANNA WATERWORKS · 3,238 people · 2019 | 2/3 | SYR4 |
| Lithium | 28.5 µg/L No EPA limit set Main supplier: LEE COUNTY WATER ASSOCIATION · 3,770 people · 2024 | 2/3 | UCMR-5 |
| Dibromochloromethane | 12.7 µg/L No EPA limit set Main supplier: LEE COUNTY WATER ASSOCIATION · 3,770 people · 2019
Highest in the city: 21.78 µg/L — ADC EAST ARKANSAS REGIONAL · 1,650 people · 2019 | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 20.165 µg/L 34% of the EPA limit 60 µg/L Main supplier: LEE COUNTY WATER ASSOCIATION · 3,770 people · 2019 | 3/3 | SYR4 |
| Dibromoacetic Acid | 18.95 µg/L No EPA limit set Main supplier: LEE COUNTY WATER ASSOCIATION · 3,770 people · 2019 | 3/3 | SYR4 |
| Xylenes, Total | 18.216 µg/L 0.2% of the EPA limit 10000 µg/L Highest in the city: ADC EAST ARKANSAS REGIONAL · 1,650 people · 2019 | 1/3 | SYR4 |
| Bromodichloromethane | 2.45 µg/L No EPA limit set Main supplier: LEE COUNTY WATER ASSOCIATION · 3,770 people · 2019
Highest in the city: 10.92 µg/L — ADC EAST ARKANSAS REGIONAL · 1,650 people · 2019 | 3/3 | SYR4 |
| Gross Beta Particle Activity | 7.38 pCi/L No EPA limit set Highest in the city: MARIANNA WATERWORKS · 3,238 people · 2019 | 1/3 | SYR4 |
| Lead | 5.7 µg/L 38% of the EPA limit 15 µg/L Highest in the city: ADC EAST ARKANSAS REGIONAL · 1,650 people · 2019 | 2/3 | SYR4 |
| Chloroform | 5.1 µg/L No EPA limit set Highest in the city: ADC EAST ARKANSAS REGIONAL · 1,650 people · 2019 | 1/3 | SYR4 |
| Monobromoacetic Acid | 3 µg/L No EPA limit set Main supplier: LEE COUNTY WATER ASSOCIATION · 3,770 people · 2019
Highest in the city: 4.32 µg/L — MARIANNA WATERWORKS · 3,238 people · 2019 | 3/3 | SYR4 |
| Ethylbenzene | 4.04 µg/L 0.6% of the EPA limit 700 µg/L Highest in the city: ADC EAST ARKANSAS REGIONAL · 1,650 people · 2019 | 1/3 | SYR4 |
| Chromium | 3.2 µg/L 3.2% of the EPA limit 100 µg/L Highest in the city: MARIANNA WATERWORKS · 3,238 people · 2018 | 1/3 | SYR4 |
| Monochloroacetic Acid | 3.1 µg/L No EPA limit set Highest in the city: MARIANNA WATERWORKS · 3,238 people · 2019 | 1/3 | SYR4 |
| Mercury | 0.2600 µg/L 13% of the EPA limit 2 µg/L Highest in the city: MARIANNA WATERWORKS · 3,238 people · 2018 | 1/3 | SYR4 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L Main supplier: LEE COUNTY WATER ASSOCIATION · 3,770 people · 2004
Highest in the city: 0.0040 mg/L — ADC EAST ARKANSAS REGIONAL · 1,650 people · 2004 | 3/3 | 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 Marianna
| Supplier | Population served |
|---|---|
| LEE COUNTY WATER ASSOCIATION | 3,770 |
| MARIANNA WATERWORKS | 3,238 |
| ADC EAST ARKANSAS REGIONAL | 1,650 |
Frequently asked questions about Marianna tap water
Is Marianna tap water safe to drink?
EPA testing detected 24 contaminants in the water serving Marianna. 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 Marianna?
3 public water suppliers report drinking-water monitoring for Marianna, Arkansas to the EPA. Each is listed above with its population served.
What contaminants are in Marianna's water?
The contaminants EPA monitoring detected in Marianna include Copper, Fluoride, Barium, Nitrate-Nitrite, 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.