We read 8 results from City of Annapolis’s 2025 water quality report. No results over a legal limit or above a health goal.
Serves about 35,000 people · Water system ID MD0020001 · 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 |
|---|---|---|---|---|
| Bariumsingle sample · listed as a violation in the report · Treated water · 2025 report, page 2 | 0.0072 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chlorinehighest measured · range 0.58 to 1.18 · listed as a violation in the report · 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 | Not detected | 0.3 ppm | 1.3 ppm (action level) | Not detected |
| Disinfection byproducts (HAA5)highest measured · range ND to 0.65 · listed as a violation in the report · Distribution system · 2025 report, page 2 | 0.65 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest measured · range 2.3 to 4.6 · listed as a violation in the report · Distribution system · 2025 report, page 2 | 4.6 ppb | None set | 80 ppb | Below the legal limit |
| Fluoridehighest measured · range 0.19 to 0.98 · listed as a violation in the report · Treated water · 2025 report, page 2 | 0.98 ppm | 1 ppm | 4 ppm | Below the health goal |
| Lead90th percentile of homes tested, 0 over the action level · sampled 2023 · Customer taps · 2025 report, page 2 | Not detected | 0.2 ppb | 15 ppb (action level) | Not detected |
| Lithiumsingle sample · sampled 2024 · Treated water · 2025 report, page 2 | 8.4 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.
What you can do
Nothing in this report is above a health goal or legal limit. If you’re bothered by taste, smell, hardness or spots, or your home has older pipes, the filter catalog and buyer questions can help you pick, and a test of your own tap shows what your plumbing adds.
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