Tap WaterIndex

← Arkansas

Tap water quality report

Decatur, AR

EPA monitoring detected 18 contaminants across the 1 water supplier serving Decatur. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

1
water supplier
2,468
people served
18
contaminants found
Arkansas rankings Lead in Arkansas PFAS in Arkansas

What was found in Decatur's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Copper
490 µg/L 38%
of the EPA limit 1300 µg/L
 1/1 SYR4
Fluoride
460 µg/L 12%
of the EPA limit 4000 µg/L
 1/1 SYR4
Cyanide
310 µg/L 155%
of the EPA limit, in the worst sample — 200 µg/L
 1/1 SYR4
TTHM
80.4 µg/L 101%
of the EPA limit, in the worst sample — 80 µg/L
 1/1 SYR4
Chloroform
73 µg/L
No EPA limit set
 1/1 SYR4
Total Haloacetic Acids (HAA5)
62.2 µg/L 104%
of the EPA limit, in the worst sample — 60 µg/L
 1/1 SYR4
Trichloroacetic Acid
35.3 µg/L
No EPA limit set
 1/1 SYR4
Dichloroacetic Acid
31.6 µg/L
No EPA limit set
 1/1 SYR4
Lithium
10 µg/L
No EPA limit set
 1/1 UCMR-5
Lead
9.3 µg/L 62%
of the EPA limit 15 µg/L
 1/1 SYR4
Bromodichloromethane
9.2 µg/L
No EPA limit set
 1/1 SYR4
Gross Beta Particle Activity
4.1 pCi/L
No EPA limit set
 1/1 SYR4
Monochloroacetic Acid
3.3 µg/L
No EPA limit set
 1/1 SYR4
Dibromochloromethane
1.9 µg/L
No EPA limit set
 1/1 SYR4
Monobromoacetic Acid
1.7 µg/L
No EPA limit set
 1/1 SYR4
Chromium
1.3 µg/L 1.3%
of the EPA limit 100 µg/L
 1/1 SYR4
Dibromoacetic Acid
1 µg/L
No EPA limit set
 1/1 SYR4
Lead
0.0030 mg/L 20%
of the EPA limit 0.0150 mg/L
 1/1 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 single worst sample on record — 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 Decatur

SupplierPopulation 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 Copper, Fluoride, Cyanide, TTHM, Chloroform. The full list, with the highest level found 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.