We read 7 results from Hamilton Public Water System’s 2018 water quality report. No results over a legal limit; 2 above a health goal or guideline.
Serves about 62,447 people · Water system ID OH0904012 · Read the district’s 2018 report (opens in a new tab)
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Results from the 2018 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 |
|---|---|---|---|---|
| Chloriteaverage · range ND to 0.67 · listed as a violation in the report · North Plant, highest of 2 sources · 2018 report, page 5 | 0.65 ppm | 0.05 ppm | 1 ppm | Above the health goal13x the health goal |
| Lead90th percentile of 31 homes tested, 0 over the action level · listed as a violation in the report · Customer taps · 2018 report, page 5 | 3 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal15x the health goal |
| Bariumsingle sample · listed as a violation in the report · North Plant, highest of 2 sources · 2018 report, page 5 | 0.06 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chlorine dioxidehighest measured · range 160 to 530 · listed as a violation in the report · North Plant, highest of 2 sources · 2018 report, page 5 | 530 ppb | None set | 800 ppb | Below the legal limit |
| Copper90th percentile of 31 homes tested, 0 over the action level · listed as a violation in the report · Customer taps · 2018 report, page 5 | 0.03 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Fluorideaverage · range 0.2 to 1.29 · listed as a violation in the report · South Plant, highest of 2 sources · 2018 report, page 5 | 0.95 ppm | 1 ppm | 4 ppm | Below the health goal |
| Nitrate (as N)single sample · listed as a violation in the report · South Plant · 2018 report, page 5 | 1.33 ppm | 10 ppm | 10 ppm | Below the health goal |
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 Hamilton Public Water System’s water between May 2024 and Nov 2024. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- PFOA5.3 pptFound in 1 of 4 samples · highest resultAbove the federal limit that takes effect in 2029 (4 ppt)
- PFHxS4.1 pptFound in 1 of 4 samples · highest resultNo federal limit in force for this one
- PFBS3.6 pptFound in 2 of 4 samples · highest resultNo federal limit in force for this one
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.
PFAS ("forever chemicals")
Found: PFOA (EPA testing)
What removes it: Reverse osmosis.
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