Skip to content
TapBuff
ZIP

Eleanor Slater Hospital Zambarano Unit

What EPA’s and CDC’s records show in this utility’s water: nitrate, arsenic and other regulated chemicals; lead and copper; and violations since 2016, with the certification that handles each result.

Serves
270 people
Connections
23
Water source
Surface water
Based in
Burrillville, RI
County
Providence
Owner
State government
The ZIP code it serves

02859

The short answer

1 result is above EPA’s legal limit. The worst: Lead, above the action level. No health-based violations on file since 2016.

What handles it

What was found

Lead and copper: EPA SDWIS monitoring periods ending 2003 to 2023.

Haloacetic acids (HAA5), total trihalomethanes (TTHM), arsenic and nitrate: Rhode Island’s yearly averages per water system, as CDC’s Environmental Public Health Tracking Network publishes them, 2020 to 2023, with EPA’s 2012 to 2019 file for earlier years.

Fluoride and chromium (total): EPA’s compliance monitoring file, samples taken from Jan. 30, 2012 to Sept. 19, 2019. Newer results are in the utility’s annual water quality report.

Above the legal limit1

Lead

Comes from pipes, often your own

Above the action level

16ppb

90th percentile, 2021 to 2023

In the latest period, 9 in 10 homes sampled were at or below 16 ppb, above EPA’s action level of 15 ppb. The action level drops to 10 ppb on Nov. 1, 2027, and this result is at or above that. EPA’s health goal for lead is zero.

What handles it

Below EPA’s limits3

Haloacetic acids (HAA5)

Forms or is added in treatment

Below EPA’s limits

41ppb

Highest yearly average, 2020 to 2023

2023 average: 30.3 ppb

Averaged by year, the highest was 41 ppb, in 2022, below EPA’s legal limit of 60 ppb. In 2023, the latest year on file, it averaged 30.3 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 44.8 ppb, in 2019.

What handles it

No certification claim covers this compound yet.

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

45.8ppb

Highest yearly average, 2020 to 2023

Averaged by year, the highest was 45.8 ppb, in 2023, below EPA’s legal limit of 80 ppb. That was also the latest year on file. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 54.9 ppb, in 2019.

What handles it

  • NSF/ANSI 53 look for “Trihalomethanes (TTHM) Reduction”
  • NSF/ANSI 58 look for “Trihalomethanes (TTHM) Reduction”

Fluoride

Forms or is added in treatment

Below EPA’s limits

0.24ppm

Highest yearly average, 2012 to 2019

2019: not found

Averaged by year, the highest was 0.24 ppm, in 2016, below EPA’s legal limit of 4.0 ppm. In 2019, the latest year on file, it wasn’t found in its one sample.

What handles it

3 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
  • Arsenic
  • Chromium (total)
  • Nitrate

What handles it

A certification covers specific claims, not a whole standard. Look for these claims on the certifier’s listing, not the box. Wording varies a little: NSF writes “Lead Reduction,” WQA just “Lead.”

At the tap, or for the whole house?

Lead and copper usually come from pipes and fixtures inside or near your home. A whole-house system sits where water enters, so it cannot catch what your own plumbing adds after it. For those, the filter that counts is the one at the tap. How whole-house systems compare.

Filters with those claims on a certifier’s listing

Disclosure: TapBuff earns a commission if you buy through some links on this page. It does not change which standard or filter we name. As an Amazon Associate, TapBuff earns from qualifying purchases. How TapBuff makes money

Compare five-year costs

The best water filters for lead, ranked

Violations since 2016

No health-based violations on file with EPA since 2016. There is 1 monitoring or reporting violation: a sample missed, late or not reported.

What this report can’t tell you

  • Everything else. Haloacetic acids (HAA5), total trihalomethanes (TTHM), arsenic and nitrate results here are Rhode Island’s yearly averages as CDC publishes them, from 2020 on, with EPA’s national file for 2012 to 2019. Fluoride and chromium (total) come from EPA’s file alone, which ends in 2019. Eleanor Slater Hospital Zambarano Unit’s own annual report, which it must send you every year, has newer results for those and the contaminants this page does not show.

  • Your own plumbing. Lead results are the 90th percentile across homes the utility samples. Your home’s service line, solder and fixtures decide yours. A certified lab test is the only way to know.

  • What it means for your health. This page reports what the records show and EPA’s limits and goals; it is not medical advice. If you are worried about a health effect, talk to a doctor or your local health department.

  • Anything after the latest data. SDWIS data is from 2026 Q3; UCMR 5 didn’t sample this utility; CDC’s yearly averages for Rhode Island cover 2020 to 2023; EPA’s compliance samples are from Jan. 30, 2012 to Sept. 19, 2019.

Testing your own tap

Eleanor Slater Hospital Zambarano Unit’s results are for the water it sends out. What your own service line, solder and fixtures add shows up only in a test of your tap, by a lab Rhode Island certifies.

The 3 labs Rhode Island certifies closest to the area Eleanor Slater Hospital Zambarano Unit serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

All 6 certified labs for Rhode Island

Sources

PWSID RI1647516. Rebuilt from EPA data on Oct. 18, 2026.

Towns it serves

Also in Providence County

All Rhode Island utilities

What to do next