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Tap water quality report

Normal, IL

EPA monitoring detected 22 contaminants across the 3 water suppliers serving Normal. 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.

3
water suppliers
59,831
people served
22
contaminants found
Illinois rankings Lead in Illinois PFAS in Illinois

What was found in Normal'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
1018 µg/L 25%
of the EPA limit 4000 µg/L
Main supplier: NORMAL · 52,736 people · 2018
1/3 SYR4
Chlorite
540 µg/L 54%
of the EPA limit 1000 µg/L
Main supplier: NORMAL · 52,736 people · 2019
1/3 SYR4
Copper
57.65 µg/L 4.4%
of the EPA limit 1300 µg/L
Main supplier: NORMAL · 52,736 people · 2017
Highest in the city: 248.8 µg/L — ILLINOIS STATE UNIVERSITY-NORMAL · 6,600 people · 2019
3/3 SYR4
Nitrate
150 µg/L 1.5%
of the EPA limit 10000 µg/L
Main supplier: NORMAL · 52,736 people · 2019
1/3 SYR4
Barium
147.95 µg/L 7.4%
of the EPA limit 2000 µg/L
Main supplier: NORMAL · 52,736 people · 2018
1/3 SYR4
Lead
4.5 µg/L 30%
of the EPA limit 15 µg/L
Main supplier: NORMAL · 52,736 people · 2017
Highest in the city: 53.14 µg/L — ILLINOIS STATE UNIVERSITY-NORMAL · 6,600 people · 2019
3/3 SYR4
Nitrate-Nitrite
48.5 µg/L 0.5%
of the EPA limit 10000 µg/L
Main supplier: NORMAL · 52,736 people · 2018
1/3 SYR4
Monobromoacetic Acid
28.8 µg/L
No EPA limit set
Main supplier: NORMAL · 52,736 people · 2019
2/3 SYR4
Total Haloacetic Acids (HAA5)
28.8 µg/L 48%
of the EPA limit 60 µg/L
Main supplier: NORMAL · 52,736 people · 2019
3/3 SYR4
Monochloroacetic Acid
19.19 µg/L
No EPA limit set
Main supplier: NORMAL · 52,736 people · 2019
1/3 SYR4
Dichloroacetic Acid
8.65 µg/L
No EPA limit set
Main supplier: NORMAL · 52,736 people · 2019
3/3 SYR4
Chromium
7.9 µg/L 7.9%
of the EPA limit 100 µg/L
Main supplier: NORMAL · 52,736 people · 2018
1/3 SYR4
TTHM
4.79165 µg/L 6%
of the EPA limit 80 µg/L
Main supplier: NORMAL · 52,736 people · 2019
Highest in the city: 5.395 µg/L — ILLINOIS STATE UNIVERSITY-NORMAL · 6,600 people · 2019
3/3 SYR4
Chloroform
3.293 µg/L
No EPA limit set
Main supplier: NORMAL · 52,736 people · 2019
Highest in the city: 3.4589 µg/L — NORTH MEADOW VILLAGE MHP · 495 people · 2017
3/3 SYR4
Combined Radium (-226 And -228)
2.1208 pCi/L 42%
of the EPA limit 5 pCi/L
Main supplier: NORMAL · 52,736 people · 2017
1/3 SYR4
Bromodichloromethane
1.3845 µg/L
No EPA limit set
Main supplier: NORMAL · 52,736 people · 2019
Highest in the city: 2.07 µg/L — ILLINOIS STATE UNIVERSITY-NORMAL · 6,600 people · 2019
3/3 SYR4
Trichloroacetic Acid
1.68 µg/L
No EPA limit set
Highest in the city: ILLINOIS STATE UNIVERSITY-NORMAL · 6,600 people · 2019
1/3 SYR4
Arsenic
1.5 µg/L 15%
of the EPA limit 10 µg/L
Main supplier: NORMAL · 52,736 people · 2018
1/3 SYR4
Dibromoacetic Acid
1.495 µg/L
No EPA limit set
Main supplier: NORMAL · 52,736 people · 2019
3/3 SYR4
Dibromochloromethane
0.5320 µg/L
No EPA limit set
Main supplier: NORMAL · 52,736 people · 2019
Highest in the city: 1 µg/L — ILLINOIS STATE UNIVERSITY-NORMAL · 6,600 people · 2019
2/3 SYR4
cis-1,2-Dichloroethylene
0.6200 µg/L 0.9%
of the EPA limit 70 µg/L
Main supplier: NORMAL · 52,736 people · 2018
1/3 SYR4
Lead
0.0055 mg/L 37%
of the EPA limit 0.0150 mg/L
Main supplier: NORMAL · 52,736 people · 2025
3/3 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 Normal

SupplierPopulation served
NORMAL 52,736
ILLINOIS STATE UNIVERSITY-NORMAL 6,600
NORTH MEADOW VILLAGE MHP 495

Frequently asked questions about Normal tap water

Is Normal tap water safe to drink?

EPA testing detected 22 contaminants in the water serving Normal. 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 Normal?

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

What contaminants are in Normal's water?

The contaminants EPA monitoring detected in Normal include Fluoride, Chlorite, Copper, Nitrate, Barium. 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.