What was found in ZIP 62864
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 |
|---|---|---|---|
| Copper | 225.2 µg/L 17% of the EPA limit 1300 µg/L Main supplier: MOUNT VERNON · 15,793 people · 2017
Highest in the ZIP: 335.75 µg/L — CORINTH PWD · 3,927 people · 2019 | 3/4 | SYR4 |
| TTHM | 52.73 µg/L 66% of the EPA limit 80 µg/L Main supplier: MOUNT VERNON · 15,793 people · 2019 | 4/4 | SYR4 |
| Chloroform | 38.06 µg/L No EPA limit set Main supplier: MOUNT VERNON · 15,793 people · 2019
Highest in the ZIP: 43.02 µg/L — NORTHEAST MOUNT VERNON WATER COMPANY · 5,483 people · 2019 | 4/4 | SYR4 |
| Lead | 34.7 µg/L 231% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: MOUNT VERNON · 15,793 people · 2017 | 3/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 28 µg/L 47% of the EPA limit 60 µg/L Main supplier: MOUNT VERNON · 15,793 people · 2019
Highest in the ZIP: 28.915 µg/L — WOODLAWN · 3,587 people · 2019 | 4/4 | SYR4 |
| Dichloroacetic Acid | 23.49 µg/L No EPA limit set Main supplier: MOUNT VERNON · 15,793 people · 2019
Highest in the ZIP: 25.86 µg/L — WOODLAWN · 3,587 people · 2019 | 4/4 | SYR4 |
| Bromodichloromethane | 10.8 µg/L No EPA limit set Main supplier: MOUNT VERNON · 15,793 people · 2019
Highest in the ZIP: 10.82 µg/L — NORTHEAST MOUNT VERNON WATER COMPANY · 5,483 people · 2019 | 4/4 | SYR4 |
| Trichloroacetic Acid | 4.7 µg/L No EPA limit set Main supplier: MOUNT VERNON · 15,793 people · 2019 | 4/4 | SYR4 |
| Monochloroacetic Acid | 3.01 µg/L No EPA limit set Main supplier: MOUNT VERNON · 15,793 people · 2019
Highest in the ZIP: 4.59 µg/L — WOODLAWN · 3,587 people · 2019 | 4/4 | SYR4 |
| Dibromochloromethane | 3.945 µg/L No EPA limit set Main supplier: MOUNT VERNON · 15,793 people · 2019
Highest in the ZIP: 4.57 µg/L — NORTHEAST MOUNT VERNON WATER COMPANY · 5,483 people · 2019 | 4/4 | SYR4 |
| Monobromoacetic Acid | 2.62 µg/L No EPA limit set Highest in the ZIP: WOODLAWN · 3,587 people · 2019 | 1/4 | SYR4 |
| Dibromoacetic Acid | 1.5 µg/L No EPA limit set Main supplier: MOUNT VERNON · 15,793 people · 2019
Highest in the ZIP: 1.95 µg/L — WOODLAWN · 3,587 people · 2019 | 4/4 | SYR4 |
| Bromoform | 0.6800 µg/L No EPA limit set Highest in the ZIP: WOODLAWN · 3,587 people · 2019 | 1/4 | SYR4 |
| Pfba | 0.0099 µg/L No EPA limit set Main supplier: MOUNT VERNON · 15,793 people · 2024 | 4/4 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: MOUNT VERNON · 15,793 people · 2025
Highest in the ZIP: 0.0062 mg/L — NORTHEAST MOUNT VERNON WATER COMPANY · 5,483 people · 2025 | 4/4 | 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 62864
| Supplier | State | Population served |
|---|---|---|
| MOUNT VERNON | IL | 15,793 |
| NORTHEAST MOUNT VERNON WATER COMPANY | IL | 5,483 |
| CORINTH PWD | IL | 3,927 |
| WOODLAWN | IL | 3,587 |
Frequently asked questions about ZIP 62864 tap water
Is the tap water in ZIP 62864 safe to drink?
EPA testing detected 15 contaminants across the water suppliers serving ZIP 62864. 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 62864?
4 public water suppliers report EPA drinking-water monitoring for ZIP 62864. Each is listed above with its population served.
What contaminants are in ZIP 62864's water?
EPA monitoring detected Copper, TTHM, Chloroform, Lead, Total Haloacetic Acids (HAA5), and others across this ZIP's suppliers. The full list with levels and sources is above.