What was found in ZIP 60657
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 |
|---|---|---|---|
| Fluoride | 950 µg/L 24% of the EPA limit 4000 µg/L Main supplier: CHICAGO · 2,721,308 people · 2019 | 1/2 | SYR4 |
| Nitrate | 436.7 µg/L 4.4% of the EPA limit 10000 µg/L Main supplier: CHICAGO · 2,721,308 people · 2019 | 1/2 | SYR4 |
| Nitrate-Nitrite | 427.5 µg/L 4.3% of the EPA limit 10000 µg/L Main supplier: CHICAGO · 2,721,308 people · 2019 | 1/2 | SYR4 |
| Copper | 157 µg/L 12% of the EPA limit 1300 µg/L Main supplier: CHICAGO · 2,721,308 people · 2018
Highest in the ZIP: 335.75 µg/L — CORINTH PWD · 3,927 people · 2019 | 2/2 | SYR4 |
| TTHM | 32.895 µg/L 41% of the EPA limit 80 µg/L Main supplier: CHICAGO · 2,721,308 people · 2019
Highest in the ZIP: 49.12 µg/L — CORINTH PWD · 3,927 people · 2019 | 2/2 | SYR4 |
| Chloroform | 17.2 µg/L No EPA limit set Main supplier: CHICAGO · 2,721,308 people · 2019
Highest in the ZIP: 41.87 µg/L — CORINTH PWD · 3,927 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 17.6 µg/L 29% of the EPA limit 60 µg/L Main supplier: CHICAGO · 2,721,308 people · 2019
Highest in the ZIP: 24.975 µg/L — CORINTH PWD · 3,927 people · 2019 | 2/2 | SYR4 |
| Barium | 22.4 µg/L 1.1% of the EPA limit 2000 µg/L Main supplier: CHICAGO · 2,721,308 people · 2019 | 1/2 | SYR4 |
| Dichloroacetic Acid | 9.1 µg/L No EPA limit set Main supplier: CHICAGO · 2,721,308 people · 2019
Highest in the ZIP: 20.16 µg/L — CORINTH PWD · 3,927 people · 2019 | 2/2 | SYR4 |
| Lead | 11 µg/L 73% of the EPA limit 15 µg/L Main supplier: CHICAGO · 2,721,308 people · 2018 | 2/2 | SYR4 |
| Bromodichloromethane | 10.8 µg/L No EPA limit set Main supplier: CHICAGO · 2,721,308 people · 2019 | 2/2 | SYR4 |
| Trichloroacetic Acid | 7.8 µg/L No EPA limit set Main supplier: CHICAGO · 2,721,308 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 5.9 µg/L No EPA limit set Main supplier: CHICAGO · 2,721,308 people · 2019 | 2/2 | SYR4 |
| Monochloroacetic Acid | 4.8 µg/L No EPA limit set Main supplier: CHICAGO · 2,721,308 people · 2019 | 2/2 | SYR4 |
| Selenium | 2.48 µg/L 5% of the EPA limit 50 µg/L Main supplier: CHICAGO · 2,721,308 people · 2019 | 1/2 | SYR4 |
| Dibromoacetic Acid | 1.7 µg/L No EPA limit set Main supplier: CHICAGO · 2,721,308 people · 2019 | 2/2 | SYR4 |
| Combined Radium (-226 And -228) | 0.8230 pCi/L 16% of the EPA limit 5 pCi/L Main supplier: CHICAGO · 2,721,308 people · 2014 | 1/2 | SYR4 |
| Arsenic | 0.7528 µg/L 7.5% of the EPA limit 10 µg/L Main supplier: CHICAGO · 2,721,308 people · 2019 | 1/2 | SYR4 |
| Lead | 0.0070 mg/L 47% of the EPA limit 0.0150 mg/L Main supplier: CHICAGO · 2,721,308 people · 2026 | 2/2 | LCR |
| Pfba | 0.0056 µg/L No EPA limit set Highest in the ZIP: CORINTH PWD · 3,927 people · 2023 | 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 60657
| Supplier | State | Population served |
|---|---|---|
| CHICAGO | IL | 2,721,308 |
| CORINTH PWD | IL | 3,927 |
Frequently asked questions about ZIP 60657 tap water
Is the tap water in ZIP 60657 safe to drink?
EPA testing detected 20 contaminants across the water suppliers serving ZIP 60657. 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 60657?
2 public water suppliers report EPA drinking-water monitoring for ZIP 60657. Each is listed above with its population served.
What contaminants are in ZIP 60657's water?
EPA monitoring detected Fluoride, Nitrate, Nitrate-Nitrite, Copper, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.