Normal water quality

Updated 2026-10-22 · Illinois · Affiliate disclosure

We read 8 results from Normal’s 2025 water quality report. No results over a legal limit; 2 above a health goal or guideline.

Serves about 45,841 people · Water system ID IL1130900 · Read the district’s 2025 report (opens in a new tab)

Open this district in the water lookupCompare with your own test results, see the district map and get matched filters.

Results from the 2025 report

Each number is copied from the district’s report and links to the page it’s printed on. Where the report lists several plants, wells or purchased water, the highest is shown.

ContaminantResultHealth goalLegal limitWhat it means
Chloritehighest measured · range 0.12 to 0.54 · listed as a violation in the report · Distribution system · 2025 report, page 70.54 ppm0.05 ppm1 ppmAbove the health goal11x the health goal
Lead90th percentile of homes tested, 2 over the action level · listed as a violation in the report · Customer taps · 2025 report, page 79 ppb0.2 ppb15 ppb (action level)Above the health goal45x the health goal
Bariumhighest measured · range 0.02 to 0.02 · listed as a violation in the report · Treatment plant · 2025 report, page 80.02 ppm2 ppm2 ppmBelow the health goal
Chlorinehighest measured · range 3 to 4 · listed as a violation in the report · Distribution system · 2025 report, page 73.7 ppmNone set4 ppmBelow the legal limit
Copper90th percentile of homes tested, 0 over the action level · listed as a violation in the report · Customer taps · 2025 report, page 70.13 ppm0.3 ppm1.3 ppm (action level)Below the health goal
Fluoridehighest measured · range 0.73 to 0.73 · listed as a violation in the report · Treatment plant · 2025 report, page 80.73 ppm1 ppm4 ppmBelow the health goal
Nitrate (as N)highest measured · range 0.03 to 0.03 · listed as a violation in the report · Treatment plant · 2025 report, page 80.03 ppm10 ppm10 ppmBelow the health goal
Sodiumhighest measured · range 96 to 96 · listed as a violation in the report · Treatment plant · 2025 report, page 896 ppmNone setNoneNo health limit

Utility results describe the whole system, measured where water enters the pipes, not your tap. Your home’s plumbing can add lead or copper. 2 numbers we weren’t sure about are held back until a person checks.

What you can do

Nothing here is an emergency notice: if the district has a violation, it must tell customers directly. If you’d like to lower these at your tap, these are the treatments that remove them, and the catalog shows the models certified for each. Ranking is by certified removal; commissions never change the order.

Disinfection byproducts

Found: Chlorite

What removes it: Carbon block.

See filters that remove it

Lead

Found: Lead

What removes it: Certified carbon block or RO.

See filters that remove itWhat water filter removes lead?

More districts: Illinois water quality · All states · Something look wrong? Tell us