What was found in ZIP 60093
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 | 1132.5 µg/L 28% of the EPA limit 4000 µg/L Main supplier: WINNETKA · 12,475 people · 2019 | 2/3 | SYR4 |
| Nitrate | 600 µg/L 6% of the EPA limit 10000 µg/L Main supplier: WINNETKA · 12,475 people · 2019
Highest in the ZIP: 740 µg/L — GLENCOE · 8,849 people · 2019 | 2/3 | SYR4 |
| Nitrate-Nitrite | 714 µg/L 7.1% of the EPA limit 10000 µg/L Highest in the ZIP: GLENCOE · 8,849 people · 2018 | 1/3 | SYR4 |
| Copper | 495.05 µg/L 38% of the EPA limit 1300 µg/L Main supplier: WINNETKA · 12,475 people · 2017 | 3/3 | SYR4 |
| Lead | 8.805 µg/L 59% of the EPA limit 15 µg/L Main supplier: WINNETKA · 12,475 people · 2017
Highest in the ZIP: 67.01 µg/L — NORTHFIELD · 5,470 people · 2017 | 3/3 | SYR4 |
| TTHM | 45.01 µg/L 56% of the EPA limit 80 µg/L Main supplier: WINNETKA · 12,475 people · 2019
Highest in the ZIP: 50.54 µg/L — NORTHFIELD · 5,470 people · 2019 | 3/3 | SYR4 |
| Chloroform | 19.69 µg/L No EPA limit set Main supplier: WINNETKA · 12,475 people · 2019
Highest in the ZIP: 26.275 µg/L — NORTHFIELD · 5,470 people · 2019 | 3/3 | SYR4 |
| Barium | 22 µg/L 1.1% of the EPA limit 2000 µg/L Main supplier: WINNETKA · 12,475 people · 2019 | 2/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 21.68 µg/L 36% of the EPA limit 60 µg/L Main supplier: WINNETKA · 12,475 people · 2019 | 3/3 | SYR4 |
| Bromodichloromethane | 14.4 µg/L No EPA limit set Main supplier: WINNETKA · 12,475 people · 2019
Highest in the ZIP: 15.77 µg/L — NORTHFIELD · 5,470 people · 2019 | 3/3 | SYR4 |
| Dichloroacetic Acid | 12.575 µg/L No EPA limit set Main supplier: WINNETKA · 12,475 people · 2019
Highest in the ZIP: 13.2 µg/L — GLENCOE · 8,849 people · 2019 | 3/3 | SYR4 |
| Monochloroacetic Acid | 12.1 µg/L No EPA limit set Highest in the ZIP: NORTHFIELD · 5,470 people · 2019 | 1/3 | SYR4 |
| Dibromochloromethane | 8.568 µg/L No EPA limit set Main supplier: WINNETKA · 12,475 people · 2019
Highest in the ZIP: 9.3735 µg/L — NORTHFIELD · 5,470 people · 2019 | 3/3 | SYR4 |
| Trichloroacetic Acid | 7.38 µg/L No EPA limit set Main supplier: WINNETKA · 12,475 people · 2019
Highest in the ZIP: 7.9785 µg/L — NORTHFIELD · 5,470 people · 2019 | 3/3 | SYR4 |
| Bromoform | 2.8525 µg/L No EPA limit set Main supplier: WINNETKA · 12,475 people · 2019 | 3/3 | SYR4 |
| Dibromoacetic Acid | 2.485 µg/L No EPA limit set Main supplier: WINNETKA · 12,475 people · 2019 | 3/3 | SYR4 |
| Monobromoacetic Acid | 2.17 µg/L No EPA limit set Main supplier: WINNETKA · 12,475 people · 2019 | 3/3 | SYR4 |
| Arsenic | 1.37 µg/L 14% of the EPA limit 10 µg/L Main supplier: WINNETKA · 12,475 people · 2019
Highest in the ZIP: 1.81 µg/L — GLENCOE · 8,849 people · 2019 | 2/3 | SYR4 |
| Combined Radium (-226 And -228) | 0.8370 pCi/L 17% of the EPA limit 5 pCi/L Main supplier: WINNETKA · 12,475 people · 2014
Highest in the ZIP: 1.39 pCi/L — GLENCOE · 8,849 people · 2015 | 2/3 | SYR4 |
| Lead | 0.0085 mg/L 57% of the EPA limit 0.0150 mg/L Main supplier: WINNETKA · 12,475 people · 2025
Highest in the ZIP: 0.0170 mg/L — NORTHFIELD · 5,470 people · 2025 | 3/3 | 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 60093
| Supplier | State | Population served |
|---|---|---|
| WINNETKA | IL | 12,475 |
| GLENCOE | IL | 8,849 |
| NORTHFIELD | IL | 5,470 |
Frequently asked questions about ZIP 60093 tap water
Is the tap water in ZIP 60093 safe to drink?
EPA testing detected 20 contaminants across the water suppliers serving ZIP 60093. 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 60093?
3 public water suppliers report EPA drinking-water monitoring for ZIP 60093. Each is listed above with its population served.
What contaminants are in ZIP 60093's water?
EPA monitoring detected Fluoride, Nitrate, Nitrate-Nitrite, Copper, Lead, and others across this ZIP's suppliers. The full list with levels and sources is above.