We read 12 results from Brownsburg Water Works’s 2025 water quality report. No results over a legal limit; 4 above a health goal or guideline.
Serves about 23,750 people · Water system ID IN5232002 · 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 |
|---|---|---|---|---|
| Arsenichighest measured · range ND to 3.7 · sampled 2023 · Brownsburg wells · 2025 report, page 7 | 3.7 ppb | 0.004 ppb | 10 ppb | Above the health goal925x the health goal |
| Atrazinehighest measured · range ND to 1.8 · Citizens Energy Group (Indianapolis) plants · 2025 report, page 8 | 1.8 ppb | 0.15 ppb | 3 ppb | Above the health goal12x the health goal |
| Gross alpha (radioactivity)highest measured · sampled 2022 · Brownsburg wells · 2025 report, page 7 | 0.7 pCi/L | 0 pCi/L | 15 pCi/L | Above the health goalThe health goal is zero |
| Radium (combined 226 + 228)highest measured · range 0.9 to 1.4 · sampled 2022 · Brownsburg wells · 2025 report, page 7 | 1.4 pCi/L | 0 pCi/L | 5 pCi/L | Above the health goalThe health goal is zero |
| Bariumhighest measured · range 0.32 to 0.46 · sampled 2023 · Brownsburg wells, highest of 2 sources · 2025 report, page 7 | 0.46 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chlorineaverage · Distribution system · 2025 report, page 6 | 1 ppm | None set | 4 ppm | Below the legal limit |
| Fluoridehighest measured · Citizens Energy Group (Indianapolis) plants, highest of 2 sources · 2025 report, page 8 | 0.89 ppm | 1 ppm | 4 ppm | Below the health goal |
| Lead90th percentile of homes tested, 0 over the action level · Customer taps · 2025 report, page 6 | Not detected | 0.2 ppb | 15 ppb (action level) | Not detected |
| Nitrate (as N)highest measured · range ND to 4 · Citizens Energy Group (Indianapolis) plants, highest of 2 sources · 2025 report, page 8 | 4 ppm | 10 ppm | 10 ppm | Below the health goal |
| Simazinehighest measured · range ND to 0.2 · Citizens Energy Group (Indianapolis) plants · 2025 report, page 8 | 0.2 ppb | 4 ppb | 4 ppb | Below the health goal |
| Turbidity (cloudiness)highest measured · Citizens Energy Group (Indianapolis) plants · 2025 report, page 8 | 0.1 NTU | None set | 1 NTU | Below the legal limit |
| Lithiumhighest measured · range 9.4 to 9.9 · sampled 2023 · Brownsburg wells · 2025 report, page 7 | 9.9 ppb | 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.
EPA testing for PFAS and lithium
EPA’s own nationwide testing (UCMR 5) found these in Brownsburg Water Works’s water between Mar 2023 and Dec 2023. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- Lithium9.9 ppbFound in 2 of 8 samples · highest resultBelow EPA’s health reference level of 10 ppb
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.
Industrial chemicals and pesticides
Found: Atrazine
What removes it: Carbon block or RO.
Radium and uranium
Found: Gross alpha (radioactivity), Radium (combined 226 + 228)
What removes it: Reverse osmosis.
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