Is Gurnee Tap Water Safe? Quality Report

Water source: SWP
Ownership: Local government
Counties served: Lake

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

health-based violations

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Resolved	2011-06-01 → 2011-06-30
MCL	Health-based	Resolved	2011-06-01 → 2011-06-30
MCL	Health-based	Resolved	2011-06-01 → 2011-06-30
MCL	Health-based	Resolved	2011-06-01 → 2011-06-30
MCL	Health-based	Resolved	2009-07-01 → 2009-07-31
MCL	Health-based	Resolved	2009-07-01 → 2009-07-31
MCL	Health-based	Resolved	2009-07-01 → 2009-07-31
MCL	Health-based	Resolved	2009-07-01 → 2009-07-31
MCL	Health-based	Archived	1992-09-01 → 1992-09-30
MCL	Health-based	Archived	1992-09-01 → 1992-09-30

Other contaminants detected

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 this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Bromodichloromethane	9.162 µg/L No EPA limit set worst single sample: 9.8 µg/L	67/67	SYR4	2012–2019
Chloroform	14.7 µg/L No EPA limit set worst single sample: 25.8 µg/L	67/67	SYR4	2012–2019
Dibromochloromethane	6.277 µg/L No EPA limit set worst single sample: 6.57 µg/L	67/67	SYR4	2012–2019
Dichloroacetic Acid	5.16 µg/L No EPA limit set worst single sample: 7.48 µg/L	67/67	SYR4	2012–2019
TTHM	30.46 µg/L 38% of the EPA limit 80 µg/L worst single sample: 41.3 µg/L	67/67	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	11.168 µg/L 19% of the EPA limit 60 µg/L worst single sample: 16.93 µg/L	67/67	SYR4	2012–2019
Trichloroacetic Acid	3.62 µg/L No EPA limit set worst single sample: 7.86 µg/L	61/67	SYR4	2012–2019
Monobromoacetic Acid	1.9965 µg/L No EPA limit set worst single sample: 2.11 µg/L	48/67	SYR4	2012–2019
Bromoform	1.35 µg/L No EPA limit set worst single sample: 1.42 µg/L	46/67	SYR4	2012–2019
Dibromoacetic Acid	2.3265 µg/L No EPA limit set worst single sample: 2.42 µg/L	18/67	SYR4	2012–2019
Lead	0.00030 mg/L 2% of the EPA limit 0.0150 mg/L	16/16	LCR	2025
Copper	271.2 µg/L 21% of the EPA limit 1300 µg/L worst single sample: 313 µg/L	12/90	SYR4	2012–2018
Lead	13.175 µg/L 88% of the EPA limit 15 µg/L worst single sample: 14 µg/L	4/90	SYR4	2012–2018
Monochloroacetic Acid	3.434 µg/L No EPA limit set worst single sample: 3.48 µg/L	3/67	SYR4	2012–2019

30 contaminants tested, none detected

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Utility contact

Contact: FRITZLER, BRETT
Phone: 847-599-6853
Email: [email protected]

Frequently asked questions about Gurnee

Is Gurnee tap water safe to drink?

EPA monitoring detected 14 contaminants in Gurnee's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Gurnee's water?

EPA monitoring detected Bromodichloromethane, Chloroform, Dibromochloromethane, Dichloroacetic Acid, TTHM, and others. The full list with the level and data source for each is above.

How many people does Gurnee serve?

Gurnee reports serving 30,193 people in Illinois, per its EPA record.

Has Gurnee had any water quality violations?

The EPA has 48 violations on file for Gurnee, of which 17 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

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.