We read 12 results from Plainview WD’s 2025 water quality report. No results over a legal limit; 4 above a health goal or guideline.
Serves about 34,000 people · Water system ID NY2902845 · 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 |
|---|---|---|---|---|
| Gross alpha (radioactivity)highest measured · range ND to 3.23 · listed as a violation in the report · sampled 2024 · Wells · 2025 report, page 3 | 3.23 pCi/L | 0 pCi/L | 15 pCi/L | Above the health goalThe health goal is zero |
| Perchloratehighest measured · range ND to 5.8 · listed as a violation in the report · Wells · 2025 report, page 3 | 5.8 ppb | 1 ppb | 6 ppb | Above the health goal5.8x the health goal |
| PFOA (a PFAS)highest measured · range ND to 3.27 · listed as a violation in the report · Wells · 2025 report, page 4 | 3.27 ppt | 0.007 ppt | 10 ppt (New York) now; 4 ppt from 2029 | Above the health goal467x the health goal |
| Uraniumhighest measured · range ND to 1.62 · listed as a violation in the report · sampled 2024 · Wells · 2025 report, page 3 | 1.62 ppb | 0.6 ppb | 30 ppb | Above the health goal2.7x the health goal |
| Bariumhighest measured · range 0.004 to 0.06 · listed as a violation in the report · Wells · 2025 report, page 3 | 0.06 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chloridehighest measured · range 11.9 to 40.5 · listed as a violation in the report · Wells · 2025 report, page 3 | 40.5 ppm | — | 250 ppm guideline | Within the guideline |
| Chlorinehighest measured · range 0.57 to 1.03 · listed as a violation in the report · Distribution system · 2025 report, page 3 | 1.03 ppm | None set | 4 ppm | Below the legal limit |
| Copper90th percentile of 32 homes tested · listed as a violation in the report · sampled 2023 · Customer taps · 2025 report, page 3 | 0.2 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (TTHM)highest measured · range ND to 1.3 · listed as a violation in the report · Distribution system · 2025 report, page 3 | 1.3 ppb | None set | 80 ppb | Below the legal limit |
| Lead90th percentile of 32 homes tested, 1 over the action level · listed as a violation in the report · sampled 2023 · Customer taps · 2025 report, page 3 | Not detected | 0.2 ppb | 15 ppb (action level) | Not detected |
| Nitrate (as N)highest measured · range 0.66 to 8.4 · listed as a violation in the report · Wells · 2025 report, page 3 | 8.4 ppm | 10 ppm | 10 ppm | Below the health goal |
| Sodiumhighest measured · range 6.5 to 13.9 · listed as a violation in the report · Wells · 2025 report, page 3 | 13.9 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 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.
Radium and uranium
Found: Gross alpha (radioactivity), Uranium
What removes it: Reverse osmosis.
Industrial chemicals and pesticides
Found: Perchlorate
What removes it: Carbon block or RO.
PFAS ("forever chemicals")
Found: PFOA (a PFAS)
What removes it: Reverse osmosis.
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