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Tap water quality report

Olney, IL

EPA monitoring detected 19 contaminants across the 2 water suppliers serving Olney. 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
8,929
people served
19
contaminants found
Illinois rankings Lead in Illinois PFAS in Illinois

What was found in Olney'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
Fluoride
1160 µg/L 29%
of the EPA limit 4000 µg/L
Main supplier: OLNEY · 8,877 people · 2019
1/2 SYR4
Nitrate
360 µg/L 3.6%
of the EPA limit 10000 µg/L
Main supplier: OLNEY · 8,877 people · 2019
1/2 SYR4
Lead
12 µg/L 80%
of the EPA limit 15 µg/L
Main supplier: OLNEY · 8,877 people · 2017
Highest in the city: 290.315 µg/L — ACORN ACRES MHP · 52 people · 2019
2/2 SYR4
Nitrate-Nitrite
208 µg/L 2.1%
of the EPA limit 10000 µg/L
Main supplier: OLNEY · 8,877 people · 2018
1/2 SYR4
Copper
110 µg/L 8.5%
of the EPA limit 1300 µg/L
Main supplier: OLNEY · 8,877 people · 2017
2/2 SYR4
TTHM
58.656 µg/L 73%
of the EPA limit 80 µg/L
Main supplier: OLNEY · 8,877 people · 2019
2/2 SYR4
Chloroform
53.16 µg/L
No EPA limit set
Main supplier: OLNEY · 8,877 people · 2019
2/2 SYR4
Total Haloacetic Acids (HAA5)
32.8 µg/L 55%
of the EPA limit 60 µg/L
Main supplier: OLNEY · 8,877 people · 2019
2/2 SYR4
Barium
28.95 µg/L 1.4%
of the EPA limit 2000 µg/L
Main supplier: OLNEY · 8,877 people · 2019
1/2 SYR4
Trichloroacetic Acid
19.16 µg/L
No EPA limit set
Main supplier: OLNEY · 8,877 people · 2019
1/2 SYR4
Dichloroacetic Acid
15.4 µg/L
No EPA limit set
Main supplier: OLNEY · 8,877 people · 2019
2/2 SYR4
Monobromoacetic Acid
8.187 µg/L
No EPA limit set
Main supplier: OLNEY · 8,877 people · 2019
1/2 SYR4
Chromium
7.5 µg/L 7.5%
of the EPA limit 100 µg/L
Main supplier: OLNEY · 8,877 people · 2019
1/2 SYR4
Bromodichloromethane
6.055 µg/L
No EPA limit set
Main supplier: OLNEY · 8,877 people · 2019
2/2 SYR4
Dibromochloromethane
4.223 µg/L
No EPA limit set
Main supplier: OLNEY · 8,877 people · 2019
1/2 SYR4
Monochloroacetic Acid
2 µg/L
No EPA limit set
Main supplier: OLNEY · 8,877 people · 2019
Highest in the city: 2.68865 µg/L — ACORN ACRES MHP · 52 people · 2019
2/2 SYR4
Combined Radium (-226 And -228)
1.609 pCi/L 32%
of the EPA limit 5 pCi/L
Main supplier: OLNEY · 8,877 people · 2014
1/2 SYR4
Arsenic
1.2 µg/L 12%
of the EPA limit 10 µg/L
Main supplier: OLNEY · 8,877 people · 2019
1/2 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: OLNEY · 8,877 people · 2025
Highest in the city: 0.1527 mg/L — ACORN ACRES MHP · 52 people · 2019
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 Olney

SupplierPopulation served
OLNEY 8,877
ACORN ACRES MHP 52

Frequently asked questions about Olney tap water

Is Olney tap water safe to drink?

EPA testing detected 19 contaminants in the water serving Olney. 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 Olney?

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

What contaminants are in Olney's water?

The contaminants EPA monitoring detected in Olney include Fluoride, Nitrate, Lead, Nitrate-Nitrite, Copper. 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.