What was found in Indianapolis's water
The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 3370 µg/L 34% of the EPA limit 10000 µg/L | 1/1 | SYR4 |
| Nitrate-Nitrite | 3370 µg/L 34% of the EPA limit 10000 µg/L | 1/1 | SYR4 |
| Fluoride | 1185 µg/L 30% of the EPA limit 4000 µg/L | 1/1 | SYR4 |
| Copper | 428 µg/L 33% of the EPA limit 1300 µg/L | 1/1 | SYR4 |
| Barium | 300 µg/L 15% of the EPA limit 2000 µg/L | 1/1 | SYR4 |
| TTHM | 98.7 µg/L 123% of the EPA limit, in the worst sample — 80 µg/L | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 97.4 µg/L 162% of the EPA limit, in the worst sample — 60 µg/L | 1/1 | SYR4 |
| Chloroform | 72.7 µg/L No EPA limit set | 1/1 | SYR4 |
| Lead | 35.9 µg/L 239% of the EPA limit, in the worst sample — 15 µg/L | 1/1 | SYR4 |
| Bromodichloromethane | 19.9 µg/L No EPA limit set | 1/1 | SYR4 |
| Gross Alpha, Excl. Radon And U | 8.8 pCi/L 59% of the EPA limit 15 pCi/L | 1/1 | SYR4 |
| Dibromochloromethane | 7.5 µg/L No EPA limit set | 1/1 | SYR4 |
| Arsenic | 5.6 µg/L 56% of the EPA limit 10 µg/L | 1/1 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 4.84 µg/L 81% of the EPA limit 6 µg/L | 1/1 | SYR4 |
| Chromium | 4.4 µg/L 4.4% of the EPA limit 100 µg/L | 1/1 | SYR4 |
| Atrazine | 2.8 µg/L 93% of the EPA limit 3 µg/L | 1/1 | SYR4 |
| Xylenes, Total | 2.6 µg/L 0% of the EPA limit 10000 µg/L | 1/1 | SYR4 |
| 2,4-D | 2.03 µg/L 2.9% of the EPA limit 70 µg/L | 1/1 | SYR4 |
| Simazine | 1.8 µg/L 45% of the EPA limit 4 µg/L | 1/1 | SYR4 |
| Combined Radium (-226 And -228) | 1.73 pCi/L 35% of the EPA limit 5 pCi/L | 1/1 | SYR4 |
| Bromoform | 1.7 µg/L No EPA limit set | 1/1 | SYR4 |
| Toluene | 1.5 µg/L 0.2% of the EPA limit 1000 µg/L | 1/1 | SYR4 |
| Combined Uranium | 1.3857 µg/L 4.6% of the EPA limit 30 µg/L | 1/1 | SYR4 |
| 2,4,5-TP | 1.21 µg/L 2.4% of the EPA limit 50 µg/L | 1/1 | SYR4 |
| cis-1,2-Dichloroethylene | 1 µg/L 1.4% of the EPA limit 70 µg/L | 1/1 | SYR4 |
| Antimony, Total | 0.6000 µg/L 10% of the EPA limit 6 µg/L | 1/1 | SYR4 |
| Vinyl Chloride | 0.6000 µg/L 30% of the EPA limit 2 µg/L | 1/1 | SYR4 |
| 1,2-Dichloropropane | 0.5000 µg/L 10% of the EPA limit 5 µg/L | 1/1 | SYR4 |
| Benzo(A)Pyrene | 0.1000 µg/L 50% of the EPA limit 0.2000 µg/L | 1/1 | SYR4 |
| Pfpea | 0.0076 µg/L No EPA limit set | 1/1 | UCMR-5 |
| Pfba | 0.0057 µg/L No EPA limit set | 1/1 | UCMR-5 |
| Lead | 0.0052 mg/L 35% of the EPA limit 0.0150 mg/L | 1/1 | LCR |
| Pfhxa | 0.0051 µg/L No EPA limit set | 1/1 | UCMR-5 |
| PFBS | 0.0040 µg/L No EPA limit set | 1/1 | UCMR-5 |
Water suppliers serving Indianapolis
| Supplier | Population served |
|---|---|
| CITIZENS WATER - INDIANAPOLIS | 880,345 |
Frequently asked questions about Indianapolis tap water
Is Indianapolis tap water safe to drink?
EPA testing detected 34 contaminants in the water serving Indianapolis. 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 Indianapolis?
1 public water supplier report drinking-water monitoring for Indianapolis, Indiana to the EPA. Each is listed above with its population served.
What contaminants are in Indianapolis's water?
The contaminants EPA monitoring detected in Indianapolis include Nitrate, Nitrate-Nitrite, Fluoride, Copper, Barium. 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.