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Tap water quality report

Fox Lake, IL

EPA monitoring detected 23 contaminants across the 2 water suppliers serving Fox Lake. 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.

2
water suppliers
12,194
people served
23
contaminants found
Illinois rankings Lead in Illinois PFAS in Illinois

What was found in Fox Lake'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
1786 µg/L 137%
of the EPA limit, at the 95th percentile of samples — 1300 µg/L
Main supplier: FOX LAKE · 11,780 people · 2019
2/2 SYR4
Fluoride
1065 µg/L 27%
of the EPA limit 4000 µg/L
Main supplier: FOX LAKE · 11,780 people · 2018
Highest in the city: 1493.9 µg/L — HILLDALE MANOR SUBDIVISION · 414 people · 2018
2/2 SYR4
Nitrate
630 µg/L 6.3%
of the EPA limit 10000 µg/L
Main supplier: FOX LAKE · 11,780 people · 2019
1/2 SYR4
Nitrate-Nitrite
488 µg/L 4.9%
of the EPA limit 10000 µg/L
Main supplier: FOX LAKE · 11,780 people · 2018
1/2 SYR4
Barium
149 µg/L 7.5%
of the EPA limit 2000 µg/L
Main supplier: FOX LAKE · 11,780 people · 2018
2/2 SYR4
TTHM
37.085 µg/L 46%
of the EPA limit 80 µg/L
Main supplier: FOX LAKE · 11,780 people · 2019
2/2 SYR4
Chloroform
20.2975 µg/L
No EPA limit set
Main supplier: FOX LAKE · 11,780 people · 2019
2/2 SYR4
Lead
10.2 µg/L 68%
of the EPA limit 15 µg/L
Main supplier: FOX LAKE · 11,780 people · 2019
Highest in the city: 16.75 µg/L — HILLDALE MANOR SUBDIVISION · 414 people · 2018
2/2 SYR4
Total Haloacetic Acids (HAA5)
15.12 µg/L 25%
of the EPA limit 60 µg/L
Main supplier: FOX LAKE · 11,780 people · 2019
2/2 SYR4
Bromodichloromethane
11.157 µg/L
No EPA limit set
Main supplier: FOX LAKE · 11,780 people · 2019
2/2 SYR4
Lithium
10.6 µg/L
No EPA limit set
Main supplier: FOX LAKE · 11,780 people · 2024
1/2 UCMR-5
Dichloroacetic Acid
8.7295 µg/L
No EPA limit set
Main supplier: FOX LAKE · 11,780 people · 2019
1/2 SYR4
Trichloroacetic Acid
6.832 µg/L
No EPA limit set
Main supplier: FOX LAKE · 11,780 people · 2019
1/2 SYR4
Dibromochloromethane
5.3656 µg/L
No EPA limit set
Main supplier: FOX LAKE · 11,780 people · 2019
2/2 SYR4
Dibromoacetic Acid
1.458 µg/L
No EPA limit set
Main supplier: FOX LAKE · 11,780 people · 2019
Highest in the city: 2.745 µg/L — HILLDALE MANOR SUBDIVISION · 414 people · 2017
2/2 SYR4
Combined Radium (-226 And -228)
2.568 pCi/L 51%
of the EPA limit 5 pCi/L
Main supplier: FOX LAKE · 11,780 people · 2018
1/2 SYR4
Bromoform
2.5208 µg/L
No EPA limit set
Main supplier: FOX LAKE · 11,780 people · 2019
2/2 SYR4
Arsenic
2.44 µg/L 24%
of the EPA limit 10 µg/L
Main supplier: FOX LAKE · 11,780 people · 2018
2/2 SYR4
Monobromoacetic Acid
1.01 µg/L
No EPA limit set
Main supplier: FOX LAKE · 11,780 people · 2019
1/2 SYR4
cis-1,2-Dichloroethylene
0.9180 µg/L 1.3%
of the EPA limit 70 µg/L
Main supplier: FOX LAKE · 11,780 people · 2019
1/2 SYR4
Lead
0.0061 mg/L 41%
of the EPA limit 0.0150 mg/L
Main supplier: FOX LAKE · 11,780 people · 2025
2/2 LCR
PFOS
0.0050 µg/L
No EPA limit set
Main supplier: FOX LAKE · 11,780 people · 2024
1/2 UCMR-5
Pfpea
0.0035 µg/L
No EPA limit set
Main supplier: FOX LAKE · 11,780 people · 2024
1/2 UCMR-5
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 Fox Lake

SupplierPopulation served
FOX LAKE 11,780
HILLDALE MANOR SUBDIVISION 414

Frequently asked questions about Fox Lake tap water

Is Fox Lake tap water safe to drink?

EPA testing detected 23 contaminants in the water serving Fox Lake. 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 Fox Lake?

2 public water suppliers report drinking-water monitoring for Fox Lake, Illinois to the EPA. Each is listed above with its population served.

What contaminants are in Fox Lake's water?

The contaminants EPA monitoring detected in Fox Lake include Copper, Fluoride, Nitrate, Nitrate-Nitrite, Barium. 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.