We read 10 results from Endicott Municipal Water Works’s 2025 water quality report. No results over a legal limit; 4 above a health goal or guideline.
Serves about 45,000 people · Water system ID NY0301665 · 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 |
|---|---|---|---|---|
| Arsenicsingle sample · listed as a violation in the report · sampled 2024 · Well #32 · 2025 report, page 4 | 1 ppb | 0.004 ppb | 10 ppb | Above the health goal250x the health goal |
| Copper90th percentile of homes tested · listed as a violation in the report · Distribution · 2025 report, page 4 | 0.45 ppm | 0.3 ppm | 1.3 ppm (action level) | Above the health goal1.5x the health goal |
| Lead90th percentile of homes tested · listed as a violation in the report · Distribution · 2025 report, page 4 | 4 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal20x the health goal |
| Manganesesingle sample · listed as a violation in the report · Well #32 · 2025 report, page 4 | 0.16 ppm | — | 0.05 ppm guideline | Above the guideline3.1x the guideline (taste, odor or stains; not a health limit) |
| Bariumsingle sample · listed as a violation in the report · sampled 2024 · Well #32 · 2025 report, page 4 | 0.08 ppm | 2 ppm | 2 ppm | Below the health goal |
| Disinfection byproducts (HAA5)as reported · listed as a violation in the report · Distribution · 2025 report, page 4 | 7.05 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)as reported · listed as a violation in the report · Distribution · 2025 report, page 4 | 23.4 ppb | None set | 80 ppb | Below the legal limit |
| Nitrate (as N)single sample · listed as a violation in the report · Well #32 · 2025 report, page 4 | 0.46 ppm | 10 ppm | 10 ppm | Below the health goal |
| Nickelsingle sample · listed as a violation in the report · printed as 0.0009 mg/l · sampled 2021 · Well #32 · 2025 report, page 4 | 0.9 ppb | None set | None | No health limit |
| Sodiumsingle sample · listed as a violation in the report · Well #32 · 2025 report, page 4 | 32.5 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.
EPA testing for PFAS and lithium
EPA’s own nationwide testing (UCMR 5) found these in Endicott Municipal Water Works’s water between Jun 2024 and Dec 2024. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- Lithium12 ppbFound in 1 of 2 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.
Lead
Found: Copper, Lead
What removes it: Reverse osmosis or Certified carbon block or RO.
Sediment or cloudy water
Found: Manganese
What removes it: Oxidation filter.
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