We read 8 results from Rathbun Regional Water Assn (Rathbun)’s 2025 water quality report. No results over a legal limit; 1 above a health goal or guideline.
Serves about 32,000 people · Water system ID IA0400900 · 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 |
|---|---|---|---|---|
| Atrazinesingle sample · listed as a violation in the report · East plant · 2025 report, page 1 | 0.3 ppb | 0.15 ppb | 3 ppb | Above the health goal2x the health goal |
| Bariumsingle sample · listed as a violation in the report · sampled 2022 · East plant · 2025 report, page 1 | 0.06 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chlorinehighest running annual average · range 2.6 to 3.04 · listed as a violation in the report · Distribution system · 2025 report, page 1 | 2.95 ppm | None set | 4 ppm | Below the legal limit |
| Copper90th percentile of homes tested · listed as a violation in the report · sampled 2023 · Customer taps · 2025 report, page 1 | 0.26 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (HAA5)highest running annual average · range 13 to 20 · listed as a violation in the report · Distribution system (DB02) · 2025 report, page 1 | 20 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest running annual average · range 34 to 46 · listed as a violation in the report · Distribution system (DB04) · 2025 report, page 1 | 43 ppb | None set | 80 ppb | Below the legal limit |
| Lead90th percentile of homes tested · listed as a violation in the report · sampled 2023 · Customer taps · 2025 report, page 1 | Not detected | 0.2 ppb | 15 ppb (action level) | Not detected |
| Sodiumsingle sample · listed as a violation in the report · East plant · 2025 report, page 1 | 28 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.
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.
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