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Tap water quality report

Charlestown, IN

EPA monitoring detected 15 contaminants across the 2 water suppliers serving Charlestown. 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.

2
water suppliers
9,268
people served
15
contaminants found
Indiana rankings Lead in Indiana PFAS in Indiana

What was found in Charlestown'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
Nitrate
260 µg/L 2.6%
of the EPA limit 10000 µg/L
Main supplier: INDIANA AMERICAN WATER - CHARLESTOWN · 8,658 people · 2019
Highest in the city: 3130 µg/L — INDIANA AMERICAN WATER - RIVERS EDGE · 610 people · 2019
2/2 SYR4
Nitrate-Nitrite
220 µg/L 2.2%
of the EPA limit 10000 µg/L
Main supplier: INDIANA AMERICAN WATER - CHARLESTOWN · 8,658 people · 2019
Highest in the city: 2270 µg/L — INDIANA AMERICAN WATER - RIVERS EDGE · 610 people · 2014
2/2 SYR4
Fluoride
1028.8 µg/L 26%
of the EPA limit 4000 µg/L
Main supplier: INDIANA AMERICAN WATER - CHARLESTOWN · 8,658 people · 2018
2/2 SYR4
Copper
894.4 µg/L 69%
of the EPA limit 1300 µg/L
Main supplier: INDIANA AMERICAN WATER - CHARLESTOWN · 8,658 people · 2019
2/2 SYR4
Barium
245 µg/L 12%
of the EPA limit 2000 µg/L
Main supplier: INDIANA AMERICAN WATER - CHARLESTOWN · 8,658 people · 2018
1/2 SYR4
TTHM
24.95 µg/L 31%
of the EPA limit 80 µg/L
Main supplier: INDIANA AMERICAN WATER - CHARLESTOWN · 8,658 people · 2019
1/2 SYR4
Lead
23 µg/L 153%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: INDIANA AMERICAN WATER - CHARLESTOWN · 8,658 people · 2019
2/2 SYR4
Total Haloacetic Acids (HAA5)
10.3 µg/L 17%
of the EPA limit 60 µg/L
Main supplier: INDIANA AMERICAN WATER - CHARLESTOWN · 8,658 people · 2019
1/2 SYR4
Arsenic
1.97 µg/L 20%
of the EPA limit 10 µg/L
Main supplier: INDIANA AMERICAN WATER - CHARLESTOWN · 8,658 people · 2018
2/2 SYR4
Gross Alpha, Excl. Radon And U
0.8000 pCi/L 5.3%
of the EPA limit 15 pCi/L
Main supplier: INDIANA AMERICAN WATER - CHARLESTOWN · 8,658 people · 2017
Highest in the city: 1.69 pCi/L — INDIANA AMERICAN WATER - RIVERS EDGE · 610 people · 2015
2/2 SYR4
Beryllium, Total
1 µg/L 25%
of the EPA limit 4 µg/L
Main supplier: INDIANA AMERICAN WATER - CHARLESTOWN · 8,658 people · 2018
1/2 SYR4
Chloroform
0.9000 µg/L
No EPA limit set
Main supplier: INDIANA AMERICAN WATER - CHARLESTOWN · 8,658 people · 2012
1/2 SYR4
Dibromochloromethane
0.7000 µg/L
No EPA limit set
Main supplier: INDIANA AMERICAN WATER - CHARLESTOWN · 8,658 people · 2012
1/2 SYR4
PFOA
0.0134 µg/L
No EPA limit set
Main supplier: INDIANA AMERICAN WATER - CHARLESTOWN · 8,658 people · 2023
1/2 UCMR-5
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: INDIANA AMERICAN WATER - CHARLESTOWN · 8,658 people · 2025
Highest in the city: 0.0010 mg/L — INDIANA AMERICAN WATER - RIVERS EDGE · 610 people · 2023
2/2 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 Charlestown

SupplierPopulation served
INDIANA AMERICAN WATER - CHARLESTOWN 8,658
INDIANA AMERICAN WATER - RIVERS EDGE 610

Frequently asked questions about Charlestown tap water

Is Charlestown tap water safe to drink?

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

2 public water suppliers report drinking-water monitoring for Charlestown, Indiana to the EPA. Each is listed above with its population served.

What contaminants are in Charlestown's water?

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