What was found in ZIP 46224
The level at this ZIP's main supplier, the highest level anywhere in it, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 2900 µg/L 29% of the EPA limit 10000 µg/L Main supplier: CITIZENS WATER - INDIANAPOLIS · 880,345 people · 2019 | 2/2 | SYR4 |
| Nitrate-Nitrite | 2884 µg/L 29% of the EPA limit 10000 µg/L Main supplier: CITIZENS WATER - INDIANAPOLIS · 880,345 people · 2019 | 1/2 | SYR4 |
| Fluoride | 970 µg/L 24% of the EPA limit 4000 µg/L Main supplier: CITIZENS WATER - INDIANAPOLIS · 880,345 people · 2019
Highest in the ZIP: 1052.4 µg/L — SPEEDWAY WATER WORKS · 10,578 people · 2019 | 2/2 | SYR4 |
| Copper | 329.45 µg/L 25% of the EPA limit 1300 µg/L Main supplier: CITIZENS WATER - INDIANAPOLIS · 880,345 people · 2018 | 2/2 | SYR4 |
| Barium | 270.2 µg/L 14% of the EPA limit 2000 µg/L Main supplier: CITIZENS WATER - INDIANAPOLIS · 880,345 people · 2019
Highest in the ZIP: 283.65 µg/L — SPEEDWAY WATER WORKS · 10,578 people · 2019 | 2/2 | SYR4 |
| TTHM | 77.34 µg/L 97% of the EPA limit 80 µg/L Main supplier: CITIZENS WATER - INDIANAPOLIS · 880,345 people · 2019
Highest in the ZIP: 98.99 µg/L — SPEEDWAY WATER WORKS · 10,578 people · 2019 | 2/2 | SYR4 |
| Cyanide | 98 µg/L 49% of the EPA limit 200 µg/L Highest in the ZIP: SPEEDWAY WATER WORKS · 10,578 people · 2019 | 1/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 64.62 µg/L 108% of the EPA limit, at the 95th percentile of samples — 60 µg/L Main supplier: CITIZENS WATER - INDIANAPOLIS · 880,345 people · 2019
Highest in the ZIP: 91.615 µg/L — SPEEDWAY WATER WORKS · 10,578 people · 2019 | 2/2 | SYR4 |
| Chloroform | 48.285 µg/L No EPA limit set Main supplier: CITIZENS WATER - INDIANAPOLIS · 880,345 people · 2019
Highest in the ZIP: 74.68 µg/L — SPEEDWAY WATER WORKS · 10,578 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 15.09 µg/L No EPA limit set Main supplier: CITIZENS WATER - INDIANAPOLIS · 880,345 people · 2019
Highest in the ZIP: 22.54 µg/L — SPEEDWAY WATER WORKS · 10,578 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 4.67 µg/L No EPA limit set Main supplier: CITIZENS WATER - INDIANAPOLIS · 880,345 people · 2019
Highest in the ZIP: 13.325 µg/L — SPEEDWAY WATER WORKS · 10,578 people · 2019 | 2/2 | SYR4 |
| Lead | 12.88 µg/L 86% of the EPA limit 15 µg/L Main supplier: CITIZENS WATER - INDIANAPOLIS · 880,345 people · 2018 | 2/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 7.76 pCi/L 52% of the EPA limit 15 pCi/L Main supplier: CITIZENS WATER - INDIANAPOLIS · 880,345 people · 2019 | 2/2 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 4.528 µg/L 75% of the EPA limit 6 µg/L Main supplier: CITIZENS WATER - INDIANAPOLIS · 880,345 people · 2019 | 2/2 | SYR4 |
| Arsenic | 3.92 µg/L 39% of the EPA limit 10 µg/L Main supplier: CITIZENS WATER - INDIANAPOLIS · 880,345 people · 2019 | 1/2 | SYR4 |
| Chromium | 3.34 µg/L 3.3% of the EPA limit 100 µg/L Main supplier: CITIZENS WATER - INDIANAPOLIS · 880,345 people · 2019 | 2/2 | SYR4 |
| Xylenes, Total | 2.375 µg/L 0% of the EPA limit 10000 µg/L Main supplier: CITIZENS WATER - INDIANAPOLIS · 880,345 people · 2019 | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 1.706 pCi/L 34% of the EPA limit 5 pCi/L Main supplier: CITIZENS WATER - INDIANAPOLIS · 880,345 people · 2019 | 1/2 | SYR4 |
| Atrazine | 1.7 µg/L 57% of the EPA limit 3 µg/L Main supplier: CITIZENS WATER - INDIANAPOLIS · 880,345 people · 2019 | 2/2 | SYR4 |
| Toluene | 1.47 µg/L 0.1% of the EPA limit 1000 µg/L Main supplier: CITIZENS WATER - INDIANAPOLIS · 880,345 people · 2019 | 1/2 | SYR4 |
| Combined Uranium | 1.34398 µg/L 4.5% of the EPA limit 30 µg/L Main supplier: CITIZENS WATER - INDIANAPOLIS · 880,345 people · 2016 | 1/2 | SYR4 |
| Cadmium | 1.3 µg/L 26% of the EPA limit 5 µg/L Highest in the ZIP: SPEEDWAY WATER WORKS · 10,578 people · 2019 | 1/2 | SYR4 |
| 2,4,5-TP | 1.21 µg/L 2.4% of the EPA limit 50 µg/L Main supplier: CITIZENS WATER - INDIANAPOLIS · 880,345 people · 2019 | 1/2 | SYR4 |
| Bromoform | 1.15 µg/L No EPA limit set Main supplier: CITIZENS WATER - INDIANAPOLIS · 880,345 people · 2019 | 1/2 | SYR4 |
| 2,4-D | 1.099 µg/L 1.6% of the EPA limit 70 µg/L Main supplier: CITIZENS WATER - INDIANAPOLIS · 880,345 people · 2019 | 2/2 | SYR4 |
| cis-1,2-Dichloroethylene | 1 µg/L 1.4% of the EPA limit 70 µg/L Main supplier: CITIZENS WATER - INDIANAPOLIS · 880,345 people · 2019 | 1/2 | SYR4 |
| Simazine | 0.7820 µg/L 20% of the EPA limit 4 µg/L Main supplier: CITIZENS WATER - INDIANAPOLIS · 880,345 people · 2019 | 2/2 | SYR4 |
| Antimony, Total | 0.6000 µg/L 10% of the EPA limit 6 µg/L Main supplier: CITIZENS WATER - INDIANAPOLIS · 880,345 people · 2019 | 2/2 | SYR4 |
| Vinyl Chloride | 0.5800 µg/L 29% of the EPA limit 2 µg/L Main supplier: CITIZENS WATER - INDIANAPOLIS · 880,345 people · 2019 | 1/2 | SYR4 |
| 1,2-Dichloropropane | 0.5000 µg/L 10% of the EPA limit 5 µg/L Main supplier: CITIZENS WATER - INDIANAPOLIS · 880,345 people · 2019 | 1/2 | SYR4 |
| Hexachlorocyclopentadiene | 0.1000 µg/L 0.2% of the EPA limit 50 µg/L Highest in the ZIP: SPEEDWAY WATER WORKS · 10,578 people · 2019 | 1/2 | SYR4 |
| Benzo(A)Pyrene | 0.0970 µg/L 49% of the EPA limit 0.2000 µg/L Main supplier: CITIZENS WATER - INDIANAPOLIS · 880,345 people · 2019 | 1/2 | SYR4 |
| Pfba | 0.0057 µg/L No EPA limit set Main supplier: CITIZENS WATER - INDIANAPOLIS · 880,345 people · 2024
Highest in the ZIP: 0.0180 µg/L — SPEEDWAY WATER WORKS · 10,578 people · 2025 | 2/2 | UCMR-5 |
| Pfpea | 0.0076 µg/L No EPA limit set Main supplier: CITIZENS WATER - INDIANAPOLIS · 880,345 people · 2024 | 2/2 | UCMR-5 |
| Lead | 0.0052 mg/L 35% of the EPA limit 0.0150 mg/L Main supplier: CITIZENS WATER - INDIANAPOLIS · 880,345 people · 2025 | 2/2 | LCR |
| Pfhxa | 0.0051 µg/L No EPA limit set Main supplier: CITIZENS WATER - INDIANAPOLIS · 880,345 people · 2024 | 2/2 | UCMR-5 |
| PFBS | 0.0040 µg/L No EPA limit set Main supplier: CITIZENS WATER - INDIANAPOLIS · 880,345 people · 2024 | 1/2 | UCMR-5 |
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.
Water suppliers serving ZIP 46224
| Supplier | State | Population served |
|---|---|---|
| CITIZENS WATER - INDIANAPOLIS | IN | 880,345 |
| SPEEDWAY WATER WORKS | IN | 10,578 |
Frequently asked questions about ZIP 46224 tap water
Is the tap water in ZIP 46224 safe to drink?
EPA testing detected 37 contaminants across the water suppliers serving ZIP 46224. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.
Which water suppliers serve ZIP 46224?
2 public water suppliers report EPA drinking-water monitoring for ZIP 46224. Each is listed above with its population served.
What contaminants are in ZIP 46224's water?
EPA monitoring detected Nitrate, Nitrate-Nitrite, Fluoride, Copper, Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.