We read 12 results from Roselle’s 2025 water quality report. No results over a legal limit; 2 above a health goal or guideline.
Serves about 22,897 people · Water system ID IL0434820 · Read the district’s 2025 report (opens in a new tab)
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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.
| Contaminant | Result | Health goal | Legal limit | What it means |
|---|---|---|---|---|
| Gross alpha (radioactivity)highest measured · range 2.8 to 3.1 · Purchased (Chicago / DuPage Water Commission) · 2025 report, page 4 | 3.1 pCi/L | 0 pCi/L | 15 pCi/L | Above the health goalThe health goal is zero |
| Radium (combined 226 + 228)highest measured · range 0.83 to 0.95 · Purchased (Chicago / DuPage Water Commission) · 2025 report, page 4 | 0.95 pCi/L | 0 pCi/L | 5 pCi/L | Above the health goalThe health goal is zero |
| Bariumhighest measured · range 0.02 to 0.02 · Purchased (Chicago / DuPage Water Commission) · 2025 report, page 4 | 0.02 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chlorinehighest measured · Village distribution system, highest of 2 sources · 2025 report, page 4 | 1.7 ppm | None set | 4 ppm | Below the legal limit |
| Copper90th percentile of 60 homes tested, 0 over the action level · Customer taps · 2025 report, page 4 | 0.08 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (HAA5)highest measured · range 15 to 19 · Purchased (Chicago / DuPage Water Commission), highest of 2 sources · 2025 report, page 4 | 19 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest measured · range 22.7 to 56 · Village distribution system, highest of 2 sources · 2025 report, page 4 | 49 ppb | None set | 80 ppb | Below the legal limit |
| Fluoridehighest measured · range 0.65 to 0.75 · Purchased (Chicago / DuPage Water Commission) · 2025 report, page 4 | 0.75 ppm | 1 ppm | 4 ppm | Below the health goal |
| Nitrate (as N)highest measured · range 0.32 to 0.36 · Purchased (Chicago / DuPage Water Commission) · 2025 report, page 4 | 0.36 ppm | 10 ppm | 10 ppm | Below the health goal |
| Sulfatehighest measured · range 26.8 to 27.2 · Purchased (Chicago / DuPage Water Commission) · 2025 report, page 4 | 27.2 ppm | — | 250 ppm guideline | Within the guideline |
| Turbidity (cloudiness)highest measured · Purchased (Chicago / DuPage Water Commission) · 2025 report, page 4 | 0.29 NTU | None set | 1 NTU | Below the legal limit |
| Sodiumhighest measured · range 8.67 to 9.1 · Purchased (Chicago / DuPage Water Commission) · 2025 report, page 4 | 9.1 ppm | None set | None | No 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. 1 number we weren’t sure about is 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.
Radium and uranium
Found: Gross alpha (radioactivity), Radium (combined 226 + 228)
What removes it: Reverse osmosis.
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