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Tap water quality report

ZIP 60523 — Westmont, IL

EPA monitoring across the 2 water suppliers serving ZIP 60523 in Westmont, IL detected 14 contaminants. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier below, with the EPA limit for each.

2
water suppliers
33,561
people served
14
contaminants found

What was found in ZIP 60523

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.

ContaminantLevel vs EPA limitSuppliersSource
Copper
649.5 µg/L 50%
of the EPA limit 1300 µg/L
Main supplier: WESTMONT · 24,161 people · 2017
2/2 SYR4
TTHM
49.02999999999999 µg/L 61%
of the EPA limit 80 µg/L
Main supplier: WESTMONT · 24,161 people · 2019
Highest in the ZIP: 55.309999999999995 µg/L — OAK BROOK · 9,400 people · 2019
2/2 SYR4
Chloroform
29.469999999999995 µg/L
No EPA limit set
Main supplier: WESTMONT · 24,161 people · 2019
Highest in the ZIP: 32.39999999999999 µg/L — OAK BROOK · 9,400 people · 2019
2/2 SYR4
Total Haloacetic Acids (HAA5)
25.799999999999994 µg/L 43%
of the EPA limit 60 µg/L
Main supplier: WESTMONT · 24,161 people · 2019
2/2 SYR4
Bromodichloromethane
13.339999999999991 µg/L
No EPA limit set
Main supplier: WESTMONT · 24,161 people · 2019
Highest in the ZIP: 15.2 µg/L — OAK BROOK · 9,400 people · 2019
2/2 SYR4
Lead
13.544999999999998 µg/L 90%
of the EPA limit 15 µg/L
Main supplier: WESTMONT · 24,161 people · 2017
2/2 SYR4
Dichloroacetic Acid
11.799999999999994 µg/L
No EPA limit set
Main supplier: WESTMONT · 24,161 people · 2019
2/2 SYR4
Trichloroacetic Acid
11.549999999999997 µg/L
No EPA limit set
Main supplier: WESTMONT · 24,161 people · 2019
2/2 SYR4
Dibromochloromethane
6.672999999999999 µg/L
No EPA limit set
Main supplier: WESTMONT · 24,161 people · 2019
Highest in the ZIP: 8.982999999999999 µg/L — OAK BROOK · 9,400 people · 2019
2/2 SYR4
Monochloroacetic Acid
3.8745 µg/L
No EPA limit set
Main supplier: WESTMONT · 24,161 people · 2019
Highest in the ZIP: 3.8979999999999997 µg/L — OAK BROOK · 9,400 people · 2019
2/2 SYR4
Dibromoacetic Acid
1.4705 µg/L
No EPA limit set
Main supplier: WESTMONT · 24,161 people · 2019
Highest in the ZIP: 1.81 µg/L — OAK BROOK · 9,400 people · 2019
2/2 SYR4
Monobromoacetic Acid
1.79 µg/L
No EPA limit set
Main supplier: WESTMONT · 24,161 people · 2019
2/2 SYR4
Bromoform
1.394 µg/L
No EPA limit set
Highest in the ZIP: OAK BROOK · 9,400 people · 2019
1/2 SYR4
Lead
0.0083 mg/L 55%
of the EPA limit 0.0150 mg/L
Main supplier: WESTMONT · 24,161 people · 2025
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 60523

SupplierStatePopulation served
WESTMONT IL 24,161
OAK BROOK IL 9,400

Frequently asked questions about ZIP 60523 tap water

Is the tap water in ZIP 60523 safe to drink?

EPA testing detected 14 contaminants across the water suppliers serving ZIP 60523. 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 60523?

2 public water suppliers report EPA drinking-water monitoring for ZIP 60523. Each is listed above with its population served.

What contaminants are in ZIP 60523's water?

EPA monitoring detected Copper, TTHM, Chloroform, Total Haloacetic Acids (HAA5), Bromodichloromethane, and others across this ZIP's suppliers. The full list with levels and sources is above.