What was found in ZIP 47231
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 | 2150 µg/L 22% of the EPA limit 10000 µg/L Main supplier: MADISON WATER DEPARTMENT · 15,323 people · 2019 | 1/2 | SYR4 |
| Fluoride | 752.15 µg/L 19% of the EPA limit 4000 µg/L Main supplier: MADISON WATER DEPARTMENT · 15,323 people · 2017 | 1/2 | SYR4 |
| Copper | 421.89999999999975 µg/L 32% of the EPA limit 1300 µg/L Main supplier: MADISON WATER DEPARTMENT · 15,323 people · 2017 | 2/2 | SYR4 |
| Barium | 98 µg/L 4.9% of the EPA limit 2000 µg/L Main supplier: MADISON WATER DEPARTMENT · 15,323 people · 2017 | 1/2 | SYR4 |
| TTHM | 21.15 µg/L 26% of the EPA limit 80 µg/L Main supplier: MADISON WATER DEPARTMENT · 15,323 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 10.939999999999994 µg/L 18% of the EPA limit 60 µg/L Main supplier: MADISON WATER DEPARTMENT · 15,323 people · 2019
Highest in the ZIP: 12.499999999999998 µg/L — DUPONT WATER COMPANY · 3,865 people · 2019 | 2/2 | SYR4 |
| Lead | 5.799999999999992 µg/L 39% of the EPA limit 15 µg/L Main supplier: MADISON WATER DEPARTMENT · 15,323 people · 2017 | 2/2 | SYR4 |
| Chromium | 2 µg/L 2% of the EPA limit 100 µg/L Main supplier: MADISON WATER DEPARTMENT · 15,323 people · 2017 | 1/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 1.52765 pCi/L 10% of the EPA limit 15 pCi/L Main supplier: MADISON WATER DEPARTMENT · 15,323 people · 2017 | 1/2 | SYR4 |
| Arsenic | 1.4 µg/L 14% of the EPA limit 10 µg/L Main supplier: MADISON WATER DEPARTMENT · 15,323 people · 2017 | 1/2 | SYR4 |
| Chloroform | 1.18 µg/L No EPA limit set Main supplier: MADISON WATER DEPARTMENT · 15,323 people · 2014 | 1/2 | SYR4 |
| Dibromochloromethane | 1.17 µg/L No EPA limit set Main supplier: MADISON WATER DEPARTMENT · 15,323 people · 2014 | 1/2 | SYR4 |
| Selenium | 1.1 µg/L 2.2% of the EPA limit 50 µg/L Main supplier: MADISON WATER DEPARTMENT · 15,323 people · 2017 | 1/2 | SYR4 |
| Bromodichloromethane | 0.8850 µg/L No EPA limit set Main supplier: MADISON WATER DEPARTMENT · 15,323 people · 2014 | 1/2 | SYR4 |
| PFBS | 0.0085 µg/L No EPA limit set Main supplier: MADISON WATER DEPARTMENT · 15,323 people · 2024 | 2/2 | UCMR-5 |
| PFOA | 0.0046 µg/L No EPA limit set Main supplier: MADISON WATER DEPARTMENT · 15,323 people · 2024 | 1/2 | UCMR-5 |
| Lead | 0.0018 mg/L 12% of the EPA limit 0.0150 mg/L Main supplier: MADISON WATER DEPARTMENT · 15,323 people · 2023
Highest in the ZIP: 0.0033 mg/L — DUPONT WATER COMPANY · 3,865 people · 2025 | 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.
Water suppliers serving ZIP 47231
| Supplier | State | Population served |
|---|---|---|
| MADISON WATER DEPARTMENT | IN | 15,323 |
| DUPONT WATER COMPANY | IN | 3,865 |
Frequently asked questions about ZIP 47231 tap water
Is the tap water in ZIP 47231 safe to drink?
EPA testing detected 17 contaminants across the water suppliers serving ZIP 47231. 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 47231?
2 public water suppliers report EPA drinking-water monitoring for ZIP 47231. Each is listed above with its population served.
What contaminants are in ZIP 47231's water?
EPA monitoring detected Nitrate, Fluoride, Copper, Barium, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.