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Tap water quality report

Danville, IL

EPA monitoring detected 20 contaminants across the 1 water supplier serving Danville. 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
30,106
people served
20
contaminants found
Illinois rankings Lead in Illinois PFAS in Illinois

What was found in Danville'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
Nitrate
8795 µg/L 88%
of the EPA limit 10000 µg/L
Main supplier: AQUA ILLINOIS-VERMILION COUNTY · 30,106 people · 2019
1/1 SYR4
Nitrate-Nitrite
7225 µg/L 72%
of the EPA limit 10000 µg/L
Main supplier: AQUA ILLINOIS-VERMILION COUNTY · 30,106 people · 2018
1/1 SYR4
Fluoride
969.25 µg/L 24%
of the EPA limit 4000 µg/L
Main supplier: AQUA ILLINOIS-VERMILION COUNTY · 30,106 people · 2019
1/1 SYR4
TTHM
55.822 µg/L 70%
of the EPA limit 80 µg/L
Main supplier: AQUA ILLINOIS-VERMILION COUNTY · 30,106 people · 2019
1/1 SYR4
Copper
54.7 µg/L 4.2%
of the EPA limit 1300 µg/L
Main supplier: AQUA ILLINOIS-VERMILION COUNTY · 30,106 people · 2017
1/1 SYR4
Chloroform
46.74 µg/L
No EPA limit set
Main supplier: AQUA ILLINOIS-VERMILION COUNTY · 30,106 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
29.96 µg/L 50%
of the EPA limit 60 µg/L
Main supplier: AQUA ILLINOIS-VERMILION COUNTY · 30,106 people · 2019
1/1 SYR4
Dichloroacetic Acid
21.4 µg/L
No EPA limit set
Main supplier: AQUA ILLINOIS-VERMILION COUNTY · 30,106 people · 2019
1/1 SYR4
Lead
21 µg/L 140%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: AQUA ILLINOIS-VERMILION COUNTY · 30,106 people · 2017
1/1 SYR4
Barium
8.175 µg/L 0.4%
of the EPA limit 2000 µg/L
Main supplier: AQUA ILLINOIS-VERMILION COUNTY · 30,106 people · 2019
1/1 SYR4
Bromodichloromethane
7.93 µg/L
No EPA limit set
Main supplier: AQUA ILLINOIS-VERMILION COUNTY · 30,106 people · 2019
1/1 SYR4
Trichloroacetic Acid
7.215 µg/L
No EPA limit set
Main supplier: AQUA ILLINOIS-VERMILION COUNTY · 30,106 people · 2019
1/1 SYR4
Monobromoacetic Acid
6.272 µg/L
No EPA limit set
Main supplier: AQUA ILLINOIS-VERMILION COUNTY · 30,106 people · 2019
1/1 SYR4
Monochloroacetic Acid
3.975 µg/L
No EPA limit set
Main supplier: AQUA ILLINOIS-VERMILION COUNTY · 30,106 people · 2019
1/1 SYR4
Dibromochloromethane
3.47955 µg/L
No EPA limit set
Main supplier: AQUA ILLINOIS-VERMILION COUNTY · 30,106 people · 2019
1/1 SYR4
Atrazine
2.751 µg/L 92%
of the EPA limit 3 µg/L
Main supplier: AQUA ILLINOIS-VERMILION COUNTY · 30,106 people · 2019
1/1 SYR4
Dibromoacetic Acid
1.795 µg/L
No EPA limit set
Main supplier: AQUA ILLINOIS-VERMILION COUNTY · 30,106 people · 2019
1/1 SYR4
Combined Radium (-226 And -228)
0.9730 pCi/L 19%
of the EPA limit 5 pCi/L
Main supplier: AQUA ILLINOIS-VERMILION COUNTY · 30,106 people · 2014
1/1 SYR4
Lead
0.0080 mg/L 53%
of the EPA limit 0.0150 mg/L
Main supplier: AQUA ILLINOIS-VERMILION COUNTY · 30,106 people · 2026
1/1 LCR
Pfba
0.0073 µg/L
No EPA limit set
Main supplier: AQUA ILLINOIS-VERMILION COUNTY · 30,106 people · 2024
1/1 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 Danville

SupplierPopulation served
AQUA ILLINOIS-VERMILION COUNTY 30,106

Frequently asked questions about Danville tap water

Is Danville tap water safe to drink?

EPA testing detected 20 contaminants in the water serving Danville. 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 Danville?

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

What contaminants are in Danville's water?

The contaminants EPA monitoring detected in Danville include Nitrate, Nitrate-Nitrite, Fluoride, TTHM, 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.