We read 12 results from Park Forest’s 2025 water quality report. No results over a legal limit; 2 above a health goal or guideline.
Water system ID IL0314740 · 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 |
|---|---|---|---|---|
| Lead90th percentile of homes tested, 0 over the action level · sampled 2023 · Customer taps · 2025 report, page 2 | 2.3 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal11x the health goal |
| Radium (combined 226 + 228)highest measured · range 1.94 to 1.94 · sampled 2023 · Treated well water · 2025 report, page 2 | 1.94 pCi/L | 0 pCi/L | 5 pCi/L | Above the health goalThe health goal is zero |
| Bariumhighest measured · range 0.0027 to 0.0027 · sampled 2024 · Treated well water · 2025 report, page 2 | 0.0027 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chlorinehighest measured · range 0.8 to 1 · Distribution system · 2025 report, page 2 | 1 ppm | None set | 4 ppm | Below the legal limit |
| Copper90th percentile of homes tested, 0 over the action level · sampled 2023 · Customer taps · 2025 report, page 2 | 0.17 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (HAA5)highest measured · Distribution system · 2025 report, page 2 | 3 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest measured · range 9.23 to 11.2 · Distribution system · 2025 report, page 2 | 11 ppb | None set | 80 ppb | Below the legal limit |
| Fluoridehighest measured · range 0.75 to 0.75 · sampled 2024 · Treated well water · 2025 report, page 2 | 0.75 ppm | 1 ppm | 4 ppm | Below the health goal |
| Nitrate (as N)highest measured · Treated well water · 2025 report, page 2 | 0.05 ppm | 10 ppm | 10 ppm | Below the health goal |
| Nitrite (as N)highest measured · range 0.03 to 0.03 · Treated well water · 2025 report, page 2 | 0.03 ppm | 1 ppm | 1 ppm | Below the health goal |
| Lithiumaverage · range 20.2 to 21.5 · Treated well water · 2025 report, page 2 | 20.9 ppb | None set | None | No health limit |
| Sodiumhighest measured · range 140 to 140 · sampled 2024 · Treated well water · 2025 report, page 2 | 140 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.
EPA testing for PFAS and lithium
EPA’s own nationwide testing (UCMR 5) found these in Park Forest’s water between Jan 2025 and Jul 2025. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- Lithium21.5 ppbFound in 2 of 2 samples · highest resultAbove EPA’s health reference level of 10 ppb (a guide, not a legal limit)
Source: EPA UCMR 5 occurrence data. The highest single result is shown; one high sample doesn’t mean every glass is that high.
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.
Lead
Found: Lead
What removes it: Certified carbon block or RO.
Radium and uranium
Found: Radium (combined 226 + 228)
What removes it: Reverse osmosis.
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