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Tap water quality report

Palos Park, IL

EPA monitoring detected 13 contaminants across the 2 water suppliers serving Palos 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.

2
water suppliers
7,673
people served
13
contaminants found
Illinois rankings Lead in Illinois PFAS in Illinois

What was found in Palos 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
Copper
230 µg/L 18%
of the EPA limit 1300 µg/L
Main supplier: PALOS PARK · 4,873 people · 2018
2/2 SYR4
TTHM
62.39 µg/L 78%
of the EPA limit 80 µg/L
Main supplier: PALOS PARK · 4,873 people · 2019
2/2 SYR4
Chloroform
41.585 µg/L
No EPA limit set
Main supplier: PALOS PARK · 4,873 people · 2019
2/2 SYR4
Monobromoacetic Acid
1.868 µg/L
No EPA limit set
Main supplier: PALOS PARK · 4,873 people · 2019
Highest in the city: 38.6 µg/L — SOUTH PALOS TWSP SANITARY DIST · 2,800 people · 2019
2/2 SYR4
Total Haloacetic Acids (HAA5)
26.655 µg/L 44%
of the EPA limit 60 µg/L
Main supplier: PALOS PARK · 4,873 people · 2019
Highest in the city: 32.027 µg/L — SOUTH PALOS TWSP SANITARY DIST · 2,800 people · 2019
2/2 SYR4
Dichloroacetic Acid
16.7 µg/L
No EPA limit set
Main supplier: PALOS PARK · 4,873 people · 2019
2/2 SYR4
Bromodichloromethane
14.56 µg/L
No EPA limit set
Main supplier: PALOS PARK · 4,873 people · 2019
2/2 SYR4
Lead
11.265 µg/L 75%
of the EPA limit 15 µg/L
Main supplier: PALOS PARK · 4,873 people · 2018
2/2 SYR4
Trichloroacetic Acid
10.065 µg/L
No EPA limit set
Main supplier: PALOS PARK · 4,873 people · 2019
2/2 SYR4
Dibromochloromethane
6.8865 µg/L
No EPA limit set
Main supplier: PALOS PARK · 4,873 people · 2019
2/2 SYR4
Dibromoacetic Acid
2.076 µg/L
No EPA limit set
Main supplier: PALOS PARK · 4,873 people · 2019
1/2 SYR4
Bromoform
1.055 µg/L
No EPA limit set
Main supplier: PALOS PARK · 4,873 people · 2019
2/2 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: PALOS PARK · 4,873 people · 2025
2/2 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 Palos Park

SupplierPopulation served
PALOS PARK 4,873
SOUTH PALOS TWSP SANITARY DIST 2,800

Frequently asked questions about Palos Park tap water

Is Palos Park tap water safe to drink?

EPA testing detected 13 contaminants in the water serving Palos 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 Palos Park?

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

What contaminants are in Palos Park's water?

The contaminants EPA monitoring detected in Palos Park include Copper, TTHM, Chloroform, Monobromoacetic Acid, 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.