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Tap water quality report

Gurnee, IL

EPA monitoring detected 14 contaminants across the 1 water supplier serving Gurnee. 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
30,193
people served
14
contaminants found
Illinois rankings Lead in Illinois PFAS in Illinois

What was found in Gurnee'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
271.2 µg/L 21%
of the EPA limit 1300 µg/L
Main supplier: GURNEE · 30,193 people · 2018
1/1 SYR4
TTHM
30.46 µg/L 38%
of the EPA limit 80 µg/L
Main supplier: GURNEE · 30,193 people · 2019
1/1 SYR4
Chloroform
14.7 µg/L
No EPA limit set
Main supplier: GURNEE · 30,193 people · 2019
1/1 SYR4
Lead
13.175 µg/L 88%
of the EPA limit 15 µg/L
Main supplier: GURNEE · 30,193 people · 2018
1/1 SYR4
Total Haloacetic Acids (HAA5)
11.168 µg/L 19%
of the EPA limit 60 µg/L
Main supplier: GURNEE · 30,193 people · 2019
1/1 SYR4
Bromodichloromethane
9.162 µg/L
No EPA limit set
Main supplier: GURNEE · 30,193 people · 2019
1/1 SYR4
Dibromochloromethane
6.277 µg/L
No EPA limit set
Main supplier: GURNEE · 30,193 people · 2019
1/1 SYR4
Dichloroacetic Acid
5.16 µg/L
No EPA limit set
Main supplier: GURNEE · 30,193 people · 2019
1/1 SYR4
Trichloroacetic Acid
3.62 µg/L
No EPA limit set
Main supplier: GURNEE · 30,193 people · 2019
1/1 SYR4
Monochloroacetic Acid
3.434 µg/L
No EPA limit set
Main supplier: GURNEE · 30,193 people · 2019
1/1 SYR4
Dibromoacetic Acid
2.3265 µg/L
No EPA limit set
Main supplier: GURNEE · 30,193 people · 2019
1/1 SYR4
Monobromoacetic Acid
1.9965 µg/L
No EPA limit set
Main supplier: GURNEE · 30,193 people · 2019
1/1 SYR4
Bromoform
1.35 µg/L
No EPA limit set
Main supplier: GURNEE · 30,193 people · 2019
1/1 SYR4
Lead
0.00030 mg/L 2%
of the EPA limit 0.0150 mg/L
Main supplier: GURNEE · 30,193 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 Gurnee

SupplierPopulation served
GURNEE 30,193

Frequently asked questions about Gurnee tap water

Is Gurnee tap water safe to drink?

EPA testing detected 14 contaminants in the water serving Gurnee. 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 Gurnee?

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

What contaminants are in Gurnee's water?

The contaminants EPA monitoring detected in Gurnee include Copper, TTHM, Chloroform, Lead, Total Haloacetic Acids (HAA5). 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.