University of Rhode Island water quality

Updated 2026-10-22 · Rhode Island · Affiliate disclosure

We read 6 results from University of Rhode Island’s 2025 water quality report. No results over a legal limit; 2 above a health goal or guideline.

Serves about 19,354 people · Water system ID RI1858422 · Read the district’s 2025 report (opens in a new tab)

Open this district in the water lookupCompare with your own test results, see the district map and get matched filters.

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.

ContaminantResultHealth goalLegal limitWhat it means
Lead90th percentile of homes tested, 0 over the action level · Customer taps · 2025 report, page 26.4 ppb0.2 ppb15 ppb (action level)Above the health goal32x the health goal
Manganesehighest measured · range ND to 0.07 · 2025 report, page 20.07 ppm—0.05 ppm guidelineAbove the guideline1.4x the guideline (taste, odor or stains; not a health limit)
Chlorinehighest running annual average · range 0.13 to 0.28 · 2025 report, page 20.22 ppmNone set4 ppmBelow the legal limit
Copper90th percentile of homes tested, 0 over the action level · Customer taps · 2025 report, page 20.23 ppm0.3 ppm1.3 ppm (action level)Below the health goal
Nitrate (as N)highest measured · range 1.08 to 2.34 · 2025 report, page 22.34 ppm10 ppm10 ppmBelow the health goal
Sodiumhighest measured · range 18.3 to 46.6 · 2025 report, page 246.6 ppmNone setNoneNo 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 University of Rhode Island’s water between Aug 2023 and Feb 2024. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.

  • PFOA16 pptFound in 2 of 2 samples · highest resultAbove the federal limit that takes effect in 2029 (4 ppt)
  • PFOS5 pptFound in 2 of 2 samples · highest resultAbove the federal limit that takes effect in 2029 (4 ppt)
  • PFHxS4 pptFound in 2 of 2 samples · highest resultNo federal limit in force for this one
  • PFNA7 pptFound in 2 of 2 samples · highest resultNo federal limit in force for this one
  • PFBS9 pptFound in 2 of 2 samples · highest resultNo federal limit in force for this one
  • Lithium11.5 ppbFound in 2 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: Lead

What removes it: Certified carbon block or RO.

See filters that remove itWhat water filter removes lead?

Sediment or cloudy water

Found: Manganese

What removes it: Oxidation filter.

See filters that remove it

PFAS ("forever chemicals")

Found: PFOA (EPA testing), PFOS (EPA testing)

What removes it: Reverse osmosis.

See filters that remove itWhat water filter removes PFAS?

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