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Tap water quality report

Maple Park, IL

EPA monitoring detected 15 contaminants across the 1 water supplier serving Maple Park. 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
1,484
people served
15
contaminants found
Illinois rankings Lead in Illinois PFAS in Illinois

What was found in Maple Park'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
Barium
2910 µg/L 146%
of the EPA limit, at the 95th percentile of samples — 2000 µg/L
Main supplier: MAPLE PARK · 1,484 people · 2019
1/1 SYR4
Fluoride
949.5 µg/L 24%
of the EPA limit 4000 µg/L
Main supplier: MAPLE PARK · 1,484 people · 2018
1/1 SYR4
Copper
409 µg/L 31%
of the EPA limit 1300 µg/L
Main supplier: MAPLE PARK · 1,484 people · 2018
1/1 SYR4
Cyanide
15 µg/L 7.5%
of the EPA limit 200 µg/L
Main supplier: MAPLE PARK · 1,484 people · 2018
1/1 SYR4
Nitrite
13.7 µg/L 1.4%
of the EPA limit 1000 µg/L
Main supplier: MAPLE PARK · 1,484 people · 2019
1/1 SYR4
Combined Radium (-226 And -228)
11.88 pCi/L 238%
of the EPA limit, at the 95th percentile of samples — 5 pCi/L
Main supplier: MAPLE PARK · 1,484 people · 2019
1/1 SYR4
TTHM
3.148 µg/L 3.9%
of the EPA limit 80 µg/L
Main supplier: MAPLE PARK · 1,484 people · 2019
1/1 SYR4
Chloroform
1.6675 µg/L
No EPA limit set
Main supplier: MAPLE PARK · 1,484 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
1.5846 µg/L 2.6%
of the EPA limit 60 µg/L
Main supplier: MAPLE PARK · 1,484 people · 2019
1/1 SYR4
Bromodichloromethane
1.11 µg/L
No EPA limit set
Main supplier: MAPLE PARK · 1,484 people · 2019
1/1 SYR4
Dibromochloromethane
1.1 µg/L
No EPA limit set
Main supplier: MAPLE PARK · 1,484 people · 2019
1/1 SYR4
Trichloroacetic Acid
0.8730 µg/L
No EPA limit set
Main supplier: MAPLE PARK · 1,484 people · 2019
1/1 SYR4
Dichloroacetic Acid
0.7325 µg/L
No EPA limit set
Main supplier: MAPLE PARK · 1,484 people · 2019
1/1 SYR4
Dibromoacetic Acid
0.5130 µg/L
No EPA limit set
Main supplier: MAPLE PARK · 1,484 people · 2019
1/1 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: MAPLE PARK · 1,484 people · 2024
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 Maple Park

SupplierPopulation served
MAPLE PARK 1,484

Frequently asked questions about Maple Park tap water

Is Maple Park tap water safe to drink?

EPA testing detected 15 contaminants in the water serving Maple Park. 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 Maple Park?

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

What contaminants are in Maple Park's water?

The contaminants EPA monitoring detected in Maple Park include Barium, Fluoride, Copper, Cyanide, Nitrite. 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.