We read 10 results from City of Forest Grove’s 2025 water quality report. No results over a legal limit or above a health goal.
Serves about 26,838 people · Water system ID OR4100305 · 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 |
|---|---|---|---|---|
| Bariumas reported · listed as a violation in the report · sampled 2020 · Forest Grove plant · 2025 report, page 1 | 0.0017 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chlorinehighest measured · range 0.6 to 1.22 · listed as a violation in the report · sampled 2024 · Forest Grove · 2025 report, page 1 | 1.22 ppm | None set | 4 ppm | Below the legal limit |
| Chromium (total)as reported · listed as a violation in the report · sampled 2020 · Forest Grove plant · 2025 report, page 1 | 2 ppb | None set | 100 ppb | Below the legal limit |
| Copper90th percentile of homes tested, 0 over the action level · listed as a violation in the report · sampled 2023 · Customer taps · 2025 report, page 1 | 0.18 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (HAA5)highest running annual average · range 15 to 41 · listed as a violation in the report · sampled 2024 · Distribution system · 2025 report, page 1 | 29 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest running annual average · range 10 to 38 · listed as a violation in the report · sampled 2024 · Distribution system · 2025 report, page 1 | 31 ppb | None set | 80 ppb | Below the legal limit |
| Fluoridehighest measured · range 0.3 to 0.95 · listed as a violation in the report · sampled 2024 · Forest Grove plant · 2025 report, page 1 | 0.95 ppm | 1 ppm | 4 ppm | Below the health goal |
| Nitrate (as N)as reported · listed as a violation in the report · sampled 2024 · Forest Grove plant · 2025 report, page 1 | 0.13 ppm | 10 ppm | 10 ppm | Below the health goal |
| Turbidity (cloudiness)highest measured · range 0.01 to 0.18 · listed as a violation in the report · sampled 2024 · Forest Grove plant · 2025 report, page 1 | 0.18 NTU | None set | 1 NTU | Below the legal limit |
| Sodiumas reported · listed as a violation in the report · sampled 2024 · Forest Grove plant · 2025 report, page 1 | 8.1 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. 1 number we weren’t sure about is held back until a person checks.
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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