We read 9 results from Auburn Hills’s 2025 water quality report. No results over a legal limit or above a health goal.
Serves about 21,412 people · Water system ID MI0005450 · 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 |
|---|---|---|---|---|
| Chlorinehighest running annual average · range 0.92 to 1.07 · Distribution system · 2025 report, page 4 | 1.02 ppm | None set | 4 ppm | Below the legal limit |
| Copper90th percentile of homes tested, 0 over the action level · Customer taps · 2025 report, page 4 | Not detected | 0.3 ppm | 1.3 ppm (action level) | Not detected |
| Disinfection byproducts (HAA5)highest running annual average · range 13 to 19 · Distribution system · 2025 report, page 4 | 16.3 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest running annual average · range 29.6 to 59.4 · Distribution system · 2025 report, page 4 | 41.6 ppb | None set | 80 ppb | Below the legal limit |
| Fluoridehighest measured · GLWA finished water (Lake Huron plant) · 2025 report, page 4 | 0.58 ppm | 1 ppm | 4 ppm | Below the health goal |
| Lead90th percentile of homes tested, 0 over the action level · Customer taps · 2025 report, page 4 | Not detected | 0.2 ppb | 15 ppb (action level) | Not detected |
| Nitrate (as N)highest measured · GLWA finished water (Lake Huron plant) · 2025 report, page 4 | 0.33 ppm | 10 ppm | 10 ppm | Below the health goal |
| Turbidity (cloudiness)highest measured · GLWA finished water (Lake Huron plant) · 2025 report, page 4 | 0.14 NTU | None set | 1 NTU | Below the legal limit |
| Sodiumhighest measured · GLWA finished water (Lake Huron plant) · 2025 report, page 4 | 4.8 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 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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