Tap WaterIndex

← Arkansas

Tap water quality report

Lonoke, AR

EPA monitoring detected 15 contaminants across the 1 water supplier serving Lonoke. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

1
water supplier
4,277
people served
15
contaminants found
Arkansas rankings Lead in Arkansas PFAS in Arkansas

What was found in Lonoke'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.

ContaminantLevel vs EPA limitSuppliersSource
Fluoride
1192 µg/L 30%
of the EPA limit 4000 µg/L
Main supplier: LONOKE WATERWORKS · 4,277 people · 2019
1/1 SYR4
Copper
487.5 µg/L 38%
of the EPA limit 1300 µg/L
Main supplier: LONOKE WATERWORKS · 4,277 people · 2017
1/1 SYR4
Nitrate-Nitrite
340 µg/L 3.4%
of the EPA limit 10000 µg/L
Main supplier: LONOKE WATERWORKS · 4,277 people · 2019
1/1 SYR4
Barium
230 µg/L 12%
of the EPA limit 2000 µg/L
Main supplier: LONOKE WATERWORKS · 4,277 people · 2017
1/1 SYR4
TTHM
17.559999999999995 µg/L 22%
of the EPA limit 80 µg/L
Main supplier: LONOKE WATERWORKS · 4,277 people · 2019
1/1 SYR4
Lead
7.219999999999999 µg/L 48%
of the EPA limit 15 µg/L
Main supplier: LONOKE WATERWORKS · 4,277 people · 2017
1/1 SYR4
Total Haloacetic Acids (HAA5)
4.38 µg/L 7.3%
of the EPA limit 60 µg/L
Main supplier: LONOKE WATERWORKS · 4,277 people · 2019
1/1 SYR4
Bromodichloromethane
3.8199999999999976 µg/L
No EPA limit set
Main supplier: LONOKE WATERWORKS · 4,277 people · 2019
1/1 SYR4
Dibromochloromethane
3.7799999999999985 µg/L
No EPA limit set
Main supplier: LONOKE WATERWORKS · 4,277 people · 2019
1/1 SYR4
Chloroform
3.2379999999999995 µg/L
No EPA limit set
Main supplier: LONOKE WATERWORKS · 4,277 people · 2019
1/1 SYR4
Bromoform
2.4749999999999988 µg/L
No EPA limit set
Main supplier: LONOKE WATERWORKS · 4,277 people · 2019
1/1 SYR4
Dibromoacetic Acid
2.41 µg/L
No EPA limit set
Main supplier: LONOKE WATERWORKS · 4,277 people · 2019
1/1 SYR4
Dichloroacetic Acid
2.38 µg/L
No EPA limit set
Main supplier: LONOKE WATERWORKS · 4,277 people · 2019
1/1 SYR4
Trichloroacetic Acid
2 µg/L
No EPA limit set
Main supplier: LONOKE WATERWORKS · 4,277 people · 2019
1/1 SYR4
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
Main supplier: LONOKE WATERWORKS · 4,277 people · 2025
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 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 Lonoke

SupplierPopulation served
LONOKE WATERWORKS 4,277

Frequently asked questions about Lonoke tap water

Is Lonoke tap water safe to drink?

EPA testing detected 15 contaminants in the water serving Lonoke. 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 Lonoke?

1 public water supplier report drinking-water monitoring for Lonoke, Arkansas to the EPA. Each is listed above with its population served.

What contaminants are in Lonoke's water?

The contaminants EPA monitoring detected in Lonoke include Fluoride, Copper, Nitrate-Nitrite, Barium, 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.