We read 11 results from Marysville City Pws’s 2025 water quality report. No results over a legal limit; 2 above a health goal or guideline.
Serves about 25,571 people · Water system ID OH8000314 · Read the district’s 2025 report (opens in a new tab)
Open this district in the water lookupCompare with your own test results, see the district map and get matched filters.
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 |
|---|---|---|---|---|
| Arsenicas reported · listed as a violation in the report · Treatment plant · 2025 report, page 2 | 0.9 ppb | 0.004 ppb | 10 ppb | Above the health goal225x the health goal |
| Fluorideas reported · listed as a violation in the report · Treatment plant · 2025 report, page 2 | 1.03 ppm | 1 ppm | 4 ppm | Above the health goal1x the health goal |
| Atrazineas reported · listed as a violation in the report · Treatment plant · 2025 report, page 3 | 0.1 ppb | 0.15 ppb | 3 ppb | Below the health goal |
| Bariumas reported · listed as a violation in the report · Treatment plant · 2025 report, page 2 | 0.0097 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chlorinehighest running annual average · range 1.4 to 1.77 · listed as a violation in the report · Distribution system · 2025 report, page 3 | 1.59 ppm | None set | 4 ppm | Below the legal limit |
| Copper90th percentile of 60 homes tested, 0 over the action level · listed as a violation in the report · Customer taps · 2025 report, page 2 | Not detected | 0.3 ppm | 1.3 ppm (action level) | Not detected |
| Cyanideas reported · listed as a violation in the report · Treatment plant · 2025 report, page 2 | 1.3 ppb | 150 ppb | 200 ppb | Below the health goal |
| Disinfection byproducts (HAA5)highest running annual average · range 5.4 to 25.1 · listed as a violation in the report · Distribution system · 2025 report, page 3 | 21.5 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest running annual average · range 14.2 to 58.9 · listed as a violation in the report · Distribution system · 2025 report, page 2 | 67.5 ppb | None set | 80 ppb | Below the legal limit |
| Nitrate (as N)highest measured · range 0.99 to 1.46 · listed as a violation in the report · Treatment plant · 2025 report, page 2 | 1.46 ppm | 10 ppm | 10 ppm | Below the health goal |
| Turbidity (cloudiness)highest measured · range 0.03 to 0.28 · listed as a violation in the report · Treatment plant · 2025 report, page 2 | 0.28 NTU | None set | 1 NTU | Below the legal 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 Marysville City Pws’s water between May 2023 and Jan 2026. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- Lithium13.4 ppbFound in 1 of 4 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.
Fluoride
Found: Fluoride
What removes it: Reverse osmosis.
More districts: Ohio water quality · All states · Something look wrong? Tell us