What was found in Indiana'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 |
|---|---|---|---|
| Nitrate | 3040 µg/L 30% of the EPA limit 10000 µg/L Main supplier: ICMSA CROOKED CREEK · 9,638 people · 2019 | 6/8 | SYR4 |
| Xylenes, Total | 2952.12 µg/L 30% of the EPA limit 10000 µg/L Highest in the city: ICMSA CHERRYTREE · 400 people · 2019 | 1/8 | SYR4 |
| Copper | 268.4 µg/L 21% of the EPA limit 1300 µg/L Main supplier: ICMSA CROOKED CREEK · 9,638 people · 2019
Highest in the city: 2029 µg/L — ICMSA CHERRYTREE · 400 people · 2019 | 8/8 | SYR4 |
| Barium | 42.49 µg/L 2.1% of the EPA limit 2000 µg/L Main supplier: ICMSA CROOKED CREEK · 9,638 people · 2019
Highest in the city: 632.55 µg/L — ICMSA PLUMVILLE · 883 people · 2018 | 6/8 | SYR4 |
| Ethylbenzene | 610 µg/L 87% of the EPA limit 700 µg/L Highest in the city: ICMSA CHERRYTREE · 400 people · 2019 | 1/8 | SYR4 |
| Fluoride | 92 µg/L 2.3% of the EPA limit 4000 µg/L Main supplier: ICMSA CROOKED CREEK · 9,638 people · 2019
Highest in the city: 408 µg/L — ICMSA PLUMVILLE · 883 people · 2018 | 3/8 | SYR4 |
| Total Haloacetic Acids (HAA5) | 76.97 µg/L 128% of the EPA limit, at the 95th percentile of samples — 60 µg/L Main supplier: ICMSA CROOKED CREEK · 9,638 people · 2019
Highest in the city: 158.25 µg/L — ICMSA CHERRYTREE · 400 people · 2019 | 8/8 | SYR4 |
| TTHM | 107.1 µg/L 134% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: ICMSA CROOKED CREEK · 9,638 people · 2019
Highest in the city: 141.15 µg/L — ICMSA ROSSITER · 500 people · 2019 | 8/8 | SYR4 |
| Chloroform | 69.7 µg/L No EPA limit set Main supplier: ICMSA CROOKED CREEK · 9,638 people · 2019
Highest in the city: 122.8 µg/L — ICMSA ROSSITER · 500 people · 2019 | 8/8 | SYR4 |
| Lead | 11.7 µg/L 78% of the EPA limit 15 µg/L Main supplier: ICMSA CROOKED CREEK · 9,638 people · 2019
Highest in the city: 109 µg/L — ICMSA ARCADIA · 65 people · 2019 | 6/8 | SYR4 |
| Monochloroacetic Acid | 97.7 µg/L No EPA limit set Main supplier: ICMSA CROOKED CREEK · 9,638 people · 2019 | 6/8 | SYR4 |
| Trichloroacetic Acid | 52.6 µg/L No EPA limit set Main supplier: ICMSA CROOKED CREEK · 9,638 people · 2019
Highest in the city: 58.44 µg/L — ICMSA ARCADIA · 65 people · 2019 | 8/8 | SYR4 |
| Dichloroacetic Acid | 41.95 µg/L No EPA limit set Main supplier: ICMSA CROOKED CREEK · 9,638 people · 2019
Highest in the city: 54.425 µg/L — ICMSA ROSSITER · 500 people · 2019 | 8/8 | SYR4 |
| Arsenic | 38.5 µg/L 385% of the EPA limit, at the 95th percentile of samples — 10 µg/L Main supplier: ICMSA CROOKED CREEK · 9,638 people · 2019 | 1/8 | SYR4 |
| Bromodichloromethane | 29.865 µg/L No EPA limit set Main supplier: ICMSA CROOKED CREEK · 9,638 people · 2019 | 8/8 | SYR4 |
| Dibromochloromethane | 16.9 µg/L No EPA limit set Main supplier: ICMSA CROOKED CREEK · 9,638 people · 2019
Highest in the city: 25.835 µg/L — ICMSA PLUMVILLE · 883 people · 2019 | 8/8 | SYR4 |
| Bromoform | 7.243 µg/L No EPA limit set Main supplier: ICMSA CROOKED CREEK · 9,638 people · 2019
Highest in the city: 13.375 µg/L — ICMSA PLUMVILLE · 883 people · 2019 | 4/8 | SYR4 |
| Dibromoacetic Acid | 1.5 µg/L No EPA limit set Main supplier: ICMSA CROOKED CREEK · 9,638 people · 2019
Highest in the city: 4 µg/L — ICMSA ARCADIA · 65 people · 2019 | 6/8 | SYR4 |
| Dalapon | 2.112 µg/L 1.1% of the EPA limit 200 µg/L Highest in the city: ICMSA ARCADIA · 65 people · 2019 | 3/8 | SYR4 |
| Antimony, Total | 0.4000 µg/L 6.7% of the EPA limit 6 µg/L Highest in the city: ICMSA CHERRYTREE · 400 people · 2019 | 3/8 | SYR4 |
| Monobromoacetic Acid | 0.3600 µg/L No EPA limit set Main supplier: ICMSA CROOKED CREEK · 9,638 people · 2019 | 1/8 | SYR4 |
| Hexachlorocyclopentadiene | 0.2900 µg/L 0.6% of the EPA limit 50 µg/L Highest in the city: ICMSA CHERRYTREE · 400 people · 2019 | 3/8 | SYR4 |
| Atrazine | 0.1000 µg/L 3.3% of the EPA limit 3 µg/L Main supplier: ICMSA CROOKED CREEK · 9,638 people · 2019 | 1/8 | SYR4 |
| Lead | 0.0019 mg/L 13% of the EPA limit 0.0150 mg/L Main supplier: ICMSA CROOKED CREEK · 9,638 people · 2025
Highest in the city: 0.0545 mg/L — ICMSA ARCADIA · 65 people · 2019 | 8/8 | 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 Indiana
| Supplier | Population served |
|---|---|
| ICMSA CROOKED CREEK | 9,638 |
| ICMSA PINE TOWNSHIP | 1,932 |
| ICMSA PLUMVILLE | 883 |
| ICMSA COY | 650 |
| ICMSA LUCERNE | 625 |
| ICMSA ROSSITER | 500 |
| ICMSA CHERRYTREE | 400 |
| ICMSA ARCADIA | 65 |
Frequently asked questions about Indiana tap water
Is Indiana tap water safe to drink?
EPA testing detected 24 contaminants in the water serving Indiana. 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 Indiana?
8 public water suppliers report drinking-water monitoring for Indiana, Pennsylvania to the EPA. Each is listed above with its population served.
What contaminants are in Indiana's water?
The contaminants EPA monitoring detected in Indiana include Nitrate, Xylenes, Total, Copper, Barium, Ethylbenzene. 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.