We read 13 results from Deerfield’s 2024 water quality report. No results over a legal limit or above a health goal.
Serves about 19,196 people · Water system ID IL0974340 · Read the district’s 2024 report (opens in a new tab)
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Results from the 2024 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 |
|---|---|---|---|---|
| Chlorinehighest measured · range 0.52 to 1.64 · 2024 report, page 2 | 1.64 ppm | None set | 4 ppm | Below the legal limit |
| Copper90th percentile of homes tested, 0 over the action level · Customer taps · 2024 report, page 3 | 0.16 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (HAA5)highest running annual average · range 15 to 23.9 · 2024 report, page 2 | 19.9 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest running annual average · range 27.9 to 55 · 2024 report, page 2 | 48.3 ppb | None set | 80 ppb | Below the legal limit |
| Fluoridesingle sample · 2024 report, page 2 | 0.64 ppm | 1 ppm | 4 ppm | Below the health goal |
| Lead90th percentile of homes tested, 0 over the action level · Customer taps · 2024 report, page 3 | Not detected | 0.2 ppb | 15 ppb (action level) | Not detected |
| Sulfatesingle sample · 2024 report, page 2 | 24 ppm | — | 250 ppm guideline | Within the guideline |
| Total dissolved solidssingle sample · 2024 report, page 3 | 180 ppm | — | 500 ppm guideline | Within the guideline |
| Alkalinitysingle sample · 2024 report, page 3 | 100 ppm | None set | None | No health limit |
| Calciumsingle sample · 2024 report, page 3 | 35 ppm | None set | None | No health limit |
| Hardnesssingle sample · 2024 report, page 3 | 8.19 gpg (140 ppm) | — | — | Hard |
| Magnesiumsingle sample · 2024 report, page 3 | 12 ppm | None set | None | No health limit |
| Sodiumsingle sample · 2024 report, page 3 | 14 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 in this report is above a health goal or legal limit. If you’re bothered by taste, smell, hardness or spots, or your home has older pipes, the filter catalog and buyer questions can help you pick, and a test of your own tap shows what your plumbing adds.
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