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Tap water quality report

Buffalo Grove, IL

EPA monitoring detected 14 contaminants across the 1 water supplier serving Buffalo Grove. 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
43,212
people served
14
contaminants found
Illinois rankings Lead in Illinois PFAS in Illinois

What was found in Buffalo Grove'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
135 µg/L 10%
of the EPA limit 1300 µg/L
Main supplier: BUFFALO GROVE · 43,212 people · 2017
1/1 SYR4
TTHM
50.239999999999995 µg/L 63%
of the EPA limit 80 µg/L
Main supplier: BUFFALO GROVE · 43,212 people · 2019
1/1 SYR4
Lead
41.04499999999997 µg/L 274%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: BUFFALO GROVE · 43,212 people · 2017
1/1 SYR4
Chloroform
31.059999999999995 µg/L
No EPA limit set
Main supplier: BUFFALO GROVE · 43,212 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
22.6 µg/L 38%
of the EPA limit 60 µg/L
Main supplier: BUFFALO GROVE · 43,212 people · 2019
1/1 SYR4
Bromodichloromethane
13.159999999999997 µg/L
No EPA limit set
Main supplier: BUFFALO GROVE · 43,212 people · 2019
1/1 SYR4
Dichloroacetic Acid
11.95 µg/L
No EPA limit set
Main supplier: BUFFALO GROVE · 43,212 people · 2019
1/1 SYR4
Trichloroacetic Acid
9.81 µg/L
No EPA limit set
Main supplier: BUFFALO GROVE · 43,212 people · 2019
1/1 SYR4
Monochloroacetic Acid
9 µg/L
No EPA limit set
Main supplier: BUFFALO GROVE · 43,212 people · 2019
1/1 SYR4
Dibromochloromethane
6.713999999999998 µg/L
No EPA limit set
Main supplier: BUFFALO GROVE · 43,212 people · 2019
1/1 SYR4
Monobromoacetic Acid
2.1959999999999997 µg/L
No EPA limit set
Main supplier: BUFFALO GROVE · 43,212 people · 2019
1/1 SYR4
Bromoform
2.128999999999999 µg/L
No EPA limit set
Main supplier: BUFFALO GROVE · 43,212 people · 2019
1/1 SYR4
Dibromoacetic Acid
2.019 µg/L
No EPA limit set
Main supplier: BUFFALO GROVE · 43,212 people · 2019
1/1 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: BUFFALO GROVE · 43,212 people · 2023
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 Buffalo Grove

SupplierPopulation served
BUFFALO GROVE 43,212

Frequently asked questions about Buffalo Grove tap water

Is Buffalo Grove tap water safe to drink?

EPA testing detected 14 contaminants in the water serving Buffalo Grove. 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 Buffalo Grove?

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

What contaminants are in Buffalo Grove's water?

The contaminants EPA monitoring detected in Buffalo Grove include Copper, TTHM, Lead, Chloroform, 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.