What was found in Decatur'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 | 452 µg/L 11% of the EPA limit 4000 µg/L Main supplier: DECATUR WATERWORKS · 2,468 people · 2019 | 1/1 | SYR4 |
| Copper | 442.5 µg/L 34% of the EPA limit 1300 µg/L Main supplier: DECATUR WATERWORKS · 2,468 people · 2017 | 1/1 | SYR4 |
| Cyanide | 270 µg/L 135% of the EPA limit, at the 95th percentile of samples — 200 µg/L Main supplier: DECATUR WATERWORKS · 2,468 people · 2019 | 1/1 | SYR4 |
| TTHM | 74.65 µg/L 93% of the EPA limit 80 µg/L Main supplier: DECATUR WATERWORKS · 2,468 people · 2019 | 1/1 | SYR4 |
| Chloroform | 67.1 µg/L No EPA limit set Main supplier: DECATUR WATERWORKS · 2,468 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 54.84 µg/L 91% of the EPA limit 60 µg/L Main supplier: DECATUR WATERWORKS · 2,468 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 27.56 µg/L No EPA limit set Main supplier: DECATUR WATERWORKS · 2,468 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 21.7 µg/L No EPA limit set Main supplier: DECATUR WATERWORKS · 2,468 people · 2019 | 1/1 | SYR4 |
| Lithium | 10 µg/L No EPA limit set Main supplier: DECATUR WATERWORKS · 2,468 people · 2024 | 1/1 | UCMR-5 |
| Lead | 8.505 µg/L 57% of the EPA limit 15 µg/L Main supplier: DECATUR WATERWORKS · 2,468 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 7.8 µg/L No EPA limit set Main supplier: DECATUR WATERWORKS · 2,468 people · 2019 | 1/1 | SYR4 |
| Gross Beta Particle Activity | 3.94 pCi/L No EPA limit set Main supplier: DECATUR WATERWORKS · 2,468 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 3.21 µg/L No EPA limit set Main supplier: DECATUR WATERWORKS · 2,468 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 1.805 µg/L No EPA limit set Main supplier: DECATUR WATERWORKS · 2,468 people · 2019 | 1/1 | SYR4 |
| Monobromoacetic Acid | 1.69 µg/L No EPA limit set Main supplier: DECATUR WATERWORKS · 2,468 people · 2019 | 1/1 | SYR4 |
| Chromium | 1.3 µg/L 1.3% of the EPA limit 100 µg/L Main supplier: DECATUR WATERWORKS · 2,468 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 1 µg/L No EPA limit set Main supplier: DECATUR WATERWORKS · 2,468 people · 2019 | 1/1 | SYR4 |
| Lead | 0.0030 mg/L 20% of the EPA limit 0.0150 mg/L Main supplier: DECATUR WATERWORKS · 2,468 people · 2002 | 1/1 | LCR |
Water suppliers serving Decatur
| Supplier | Population served |
|---|---|
| DECATUR WATERWORKS | 2,468 |
Frequently asked questions about Decatur tap water
Is Decatur tap water safe to drink?
EPA testing detected 18 contaminants in the water serving Decatur. 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 Decatur?
1 public water supplier report drinking-water monitoring for Decatur, Arkansas to the EPA. Each is listed above with its population served.
What contaminants are in Decatur's water?
The contaminants EPA monitoring detected in Decatur include Fluoride, Copper, Cyanide, 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.