What was found in ZIP 60164
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 | 247.25 µg/L 19% of the EPA limit 1300 µg/L Main supplier: NORTHLAKE · 12,840 people · 2017
Highest in the ZIP: 442.1 µg/L — LEYDEN TWSP WATER DISTRICT · 10,000 people · 2017 | 2/2 | SYR4 |
| TTHM | 47.4 µg/L 59% of the EPA limit 80 µg/L Main supplier: NORTHLAKE · 12,840 people · 2019 | 2/2 | SYR4 |
| Chloroform | 26.9 µg/L No EPA limit set Main supplier: NORTHLAKE · 12,840 people · 2019 | 2/2 | SYR4 |
| Lead | 14.6475 µg/L 98% of the EPA limit 15 µg/L Main supplier: NORTHLAKE · 12,840 people · 2017
Highest in the ZIP: 20.77 µg/L — LEYDEN TWSP WATER DISTRICT · 10,000 people · 2017 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 20.08 µg/L 33% of the EPA limit 60 µg/L Main supplier: NORTHLAKE · 12,840 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 14.1 µg/L No EPA limit set Main supplier: NORTHLAKE · 12,840 people · 2019 | 2/2 | SYR4 |
| Trichloroacetic Acid | 10.51 µg/L No EPA limit set Main supplier: NORTHLAKE · 12,840 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 9.29 µg/L No EPA limit set Main supplier: NORTHLAKE · 12,840 people · 2019
Highest in the ZIP: 9.35 µg/L — LEYDEN TWSP WATER DISTRICT · 10,000 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 6.97 µg/L No EPA limit set Main supplier: NORTHLAKE · 12,840 people · 2019 | 2/2 | SYR4 |
| Monochloroacetic Acid | 2.16 µg/L No EPA limit set Main supplier: NORTHLAKE · 12,840 people · 2019 | 1/2 | SYR4 |
| Monobromoacetic Acid | 1.918 µg/L No EPA limit set Main supplier: NORTHLAKE · 12,840 people · 2019 | 1/2 | SYR4 |
| Dibromoacetic Acid | 1.845 µg/L No EPA limit set Main supplier: NORTHLAKE · 12,840 people · 2019 | 2/2 | SYR4 |
| Bromoform | 0.5950 µg/L No EPA limit set Main supplier: NORTHLAKE · 12,840 people · 2019
Highest in the ZIP: 1.3 µg/L — LEYDEN TWSP WATER DISTRICT · 10,000 people · 2019 | 2/2 | SYR4 |
| Lead | 0.0040 mg/L 26% of the EPA limit 0.0150 mg/L Main supplier: NORTHLAKE · 12,840 people · 2025
Highest in the ZIP: 0.0107 mg/L — LEYDEN TWSP WATER DISTRICT · 10,000 people · 2026 | 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 60164
| Supplier | State | Population served |
|---|---|---|
| NORTHLAKE | IL | 12,840 |
| LEYDEN TWSP WATER DISTRICT | IL | 10,000 |
Frequently asked questions about ZIP 60164 tap water
Is the tap water in ZIP 60164 safe to drink?
EPA testing detected 14 contaminants across the water suppliers serving ZIP 60164. 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 60164?
2 public water suppliers report EPA drinking-water monitoring for ZIP 60164. Each is listed above with its population served.
What contaminants are in ZIP 60164'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.