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Tap water quality report

Glen Ellyn, IL

EPA monitoring detected 13 contaminants across the 1 water supplier serving Glen Ellyn. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

1
water supplier
28,850
people served
13
contaminants found
Illinois rankings Lead in Illinois PFAS in Illinois

What was found in Glen Ellyn's water

The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Copper
1343.85 µg/L 103%
of the EPA limit, at the 95th percentile of samples — 1300 µg/L
Main supplier: GLEN ELLYN · 28,850 people · 2017
1/1 SYR4
TTHM
56.1 µg/L 70%
of the EPA limit 80 µg/L
Main supplier: GLEN ELLYN · 28,850 people · 2019
1/1 SYR4
Chloroform
33.45 µg/L
No EPA limit set
Main supplier: GLEN ELLYN · 28,850 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
25.15 µg/L 42%
of the EPA limit 60 µg/L
Main supplier: GLEN ELLYN · 28,850 people · 2019
1/1 SYR4
Bromodichloromethane
15.4 µg/L
No EPA limit set
Main supplier: GLEN ELLYN · 28,850 people · 2019
1/1 SYR4
Dichloroacetic Acid
12.6 µg/L
No EPA limit set
Main supplier: GLEN ELLYN · 28,850 people · 2019
1/1 SYR4
Trichloroacetic Acid
12.5 µg/L
No EPA limit set
Main supplier: GLEN ELLYN · 28,850 people · 2019
1/1 SYR4
Dibromochloromethane
7.575 µg/L
No EPA limit set
Main supplier: GLEN ELLYN · 28,850 people · 2019
1/1 SYR4
Lead
6.333 µg/L 42%
of the EPA limit 15 µg/L
Main supplier: GLEN ELLYN · 28,850 people · 2017
1/1 SYR4
Monochloroacetic Acid
4.6935 µg/L
No EPA limit set
Main supplier: GLEN ELLYN · 28,850 people · 2019
1/1 SYR4
Monobromoacetic Acid
1.698 µg/L
No EPA limit set
Main supplier: GLEN ELLYN · 28,850 people · 2019
1/1 SYR4
Dibromoacetic Acid
1.642 µg/L
No EPA limit set
Main supplier: GLEN ELLYN · 28,850 people · 2019
1/1 SYR4
Lead
0.0027 mg/L 18%
of the EPA limit 0.0150 mg/L
Main supplier: GLEN ELLYN · 28,850 people · 2025
1/1 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. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving Glen Ellyn

SupplierPopulation served
GLEN ELLYN 28,850

Frequently asked questions about Glen Ellyn tap water

Is Glen Ellyn tap water safe to drink?

EPA testing detected 13 contaminants in the water serving Glen Ellyn. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve Glen Ellyn?

1 public water supplier report drinking-water monitoring for Glen Ellyn, Illinois to the EPA. Each is listed above with its population served.

What contaminants are in Glen Ellyn's water?

The contaminants EPA monitoring detected in Glen Ellyn include Copper, TTHM, Chloroform, Total Haloacetic Acids (HAA5), Bromodichloromethane. The full list, with the level at the main supplier and the data source, is in the table above.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.