What was found in ZIP 62231
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 | 1600 µg/L 16% of the EPA limit 10000 µg/L Highest in the ZIP: CARLYLE · 3,373 people · 2019 | 1/3 | SYR4 |
| Fluoride | 1309.5 µg/L 33% of the EPA limit 4000 µg/L Highest in the ZIP: CARLYLE · 3,373 people · 2019 | 1/3 | SYR4 |
| Copper | 335.75 µg/L 26% of the EPA limit 1300 µg/L Main supplier: CORINTH PWD · 3,927 people · 2019
Highest in the ZIP: 832 µg/L — TRITOWNSHIP WATER DISTRICT · 3,470 people · 2019 | 3/3 | SYR4 |
| Nitrate-Nitrite | 765 µg/L 7.7% of the EPA limit 10000 µg/L Highest in the ZIP: CARLYLE · 3,373 people · 2018 | 1/3 | SYR4 |
| TTHM | 49.12 µg/L 61% of the EPA limit 80 µg/L Main supplier: CORINTH PWD · 3,927 people · 2019
Highest in the ZIP: 123.75 µg/L — TRITOWNSHIP WATER DISTRICT · 3,470 people · 2019 | 3/3 | SYR4 |
| Chloroform | 41.87 µg/L No EPA limit set Main supplier: CORINTH PWD · 3,927 people · 2019
Highest in the ZIP: 107.6 µg/L — TRITOWNSHIP WATER DISTRICT · 3,470 people · 2019 | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 24.975 µg/L 42% of the EPA limit 60 µg/L Main supplier: CORINTH PWD · 3,927 people · 2019
Highest in the ZIP: 78.93 µg/L — TRITOWNSHIP WATER DISTRICT · 3,470 people · 2019 | 3/3 | SYR4 |
| Barium | 49.65 µg/L 2.5% of the EPA limit 2000 µg/L Highest in the ZIP: CARLYLE · 3,373 people · 2019 | 1/3 | SYR4 |
| Dichloroacetic Acid | 20.16 µg/L No EPA limit set Main supplier: CORINTH PWD · 3,927 people · 2019
Highest in the ZIP: 49.18 µg/L — TRITOWNSHIP WATER DISTRICT · 3,470 people · 2019 | 3/3 | SYR4 |
| Trichloroacetic Acid | 4.2 µg/L No EPA limit set Main supplier: CORINTH PWD · 3,927 people · 2019
Highest in the ZIP: 39.82 µg/L — CARLYLE · 3,373 people · 2019 | 3/3 | SYR4 |
| Bromodichloromethane | 10.5 µg/L No EPA limit set Main supplier: CORINTH PWD · 3,927 people · 2019
Highest in the ZIP: 17 µg/L — TRITOWNSHIP WATER DISTRICT · 3,470 people · 2019 | 3/3 | SYR4 |
| Lead | 8.016 µg/L 53% of the EPA limit 15 µg/L Main supplier: CORINTH PWD · 3,927 people · 2019
Highest in the ZIP: 14 µg/L — TRITOWNSHIP WATER DISTRICT · 3,470 people · 2019 | 3/3 | SYR4 |
| Monobromoacetic Acid | 7.1935 µg/L No EPA limit set Highest in the ZIP: CARLYLE · 3,373 people · 2019 | 2/3 | SYR4 |
| Monochloroacetic Acid | 2.94 µg/L No EPA limit set Main supplier: CORINTH PWD · 3,927 people · 2019
Highest in the ZIP: 5.21 µg/L — TRITOWNSHIP WATER DISTRICT · 3,470 people · 2019 | 3/3 | SYR4 |
| Dibromochloromethane | 3.785 µg/L No EPA limit set Main supplier: CORINTH PWD · 3,927 people · 2019
Highest in the ZIP: 4.6425 µg/L — TRITOWNSHIP WATER DISTRICT · 3,470 people · 2019 | 3/3 | SYR4 |
| Arsenic | 2.66 µg/L 27% of the EPA limit 10 µg/L Highest in the ZIP: CARLYLE · 3,373 people · 2019 | 1/3 | SYR4 |
| Atrazine | 2.225 µg/L 74% of the EPA limit 3 µg/L Highest in the ZIP: CARLYLE · 3,373 people · 2019 | 1/3 | SYR4 |
| Dibromoacetic Acid | 1.58 µg/L No EPA limit set Main supplier: CORINTH PWD · 3,927 people · 2019
Highest in the ZIP: 2.164 µg/L — TRITOWNSHIP WATER DISTRICT · 3,470 people · 2019 | 3/3 | SYR4 |
| Simazine | 1.46 µg/L 37% of the EPA limit 4 µg/L Highest in the ZIP: CARLYLE · 3,373 people · 2019 | 1/3 | SYR4 |
| Combined Radium (-226 And -228) | 0.6000 pCi/L 12% of the EPA limit 5 pCi/L Highest in the ZIP: CARLYLE · 3,373 people · 2015 | 1/3 | SYR4 |
| Lead | 0.0046 mg/L 30% of the EPA limit 0.0150 mg/L Main supplier: CORINTH PWD · 3,927 people · 2025
Highest in the ZIP: 0.0110 mg/L — CARLYLE · 3,373 people · 2026 | 3/3 | LCR |
| Pfba | 0.0056 µg/L No EPA limit set Main supplier: CORINTH PWD · 3,927 people · 2023 | 1/3 | 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 62231
| Supplier | State | Population served |
|---|---|---|
| CORINTH PWD | IL | 3,927 |
| TRITOWNSHIP WATER DISTRICT | IL | 3,470 |
| CARLYLE | IL | 3,373 |
Frequently asked questions about ZIP 62231 tap water
Is the tap water in ZIP 62231 safe to drink?
EPA testing detected 22 contaminants across the water suppliers serving ZIP 62231. 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 62231?
3 public water suppliers report EPA drinking-water monitoring for ZIP 62231. Each is listed above with its population served.
What contaminants are in ZIP 62231's water?
EPA monitoring detected Nitrate, Fluoride, Copper, Nitrate-Nitrite, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.