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South Trail Commerce

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
175 people
Connections
11
Water source
Groundwater
Based in
Exeter, RI
County
Washington
Owner
Private
The ZIP code it serves

02822

The short answer

2 results are above the health goal. The worst: Uranium, above the health goal. 2 health-based violations since 2016.

What handles it

What was found

Lead and copper: EPA SDWIS monitoring periods ending 2023.

Uranium, nitrate and arsenic: Rhode Island’s yearly averages per water system, as CDC’s Environmental Public Health Tracking Network publishes them, 2022 to 2023.

Above the health goal2

Uranium

Comes from the source

Above the health goal

5.3ppb

Highest yearly average, 2022 to 2023

2023 average: 2.5 ppb

Averaged by year, the highest was 5.3 ppb, in 2022: below EPA’s legal limit of 30 ppb, but above its health goal of zero. In 2023, the latest year on file, it averaged 2.5 ppb.

What handles it

Lead

Comes from pipes, often your own

Above the health goal

1.4ppb

90th percentile, 2023

In the latest period, 9 in 10 homes sampled were at or below 1.4 ppb, below EPA’s action level of 15 ppb. The action level drops to 10 ppb on Nov. 1, 2027. EPA’s health goal for lead is zero.

What handles it

Below EPA’s limits1

Nitrate

Comes from the source

Below EPA’s limits

0.79ppm

Highest yearly average, 2022 to 2023

Averaged by year, the highest was 0.79 ppm, in 2023, below EPA’s legal limit of 10 ppm. That was also the latest year on file.

What handles it

  • NSF/ANSI 58 look for “Nitrate/Nitrite Reduction”
  • NSF/ANSI 53 look for “Nitrate/Nitrite (30 ppm challenge)”
One compound tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
  • Arsenic

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

Contaminant or ruleTypePeriodMeasuredStatus
Revised Total Coliform RuleFixes required after coliform results were not made on time.EPA: Treatment Technique, Corrective/Expedited Actions (RTCR)Sept. 16, 2024—Resolved
Revised Total Coliform RuleFixes required after coliform results were not made on time.EPA: Treatment Technique, Corrective/Expedited Actions (RTCR)July 13, 2024—Unaddressed
Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 59 monitoring or reporting violations not shown.

What this report can’t tell you

  • Everything else. Uranium, nitrate and arsenic results here are Rhode Island’s yearly averages as CDC publishes them, from 2022 on, with EPA’s national file for 2012 to 2019. South Trail Commerce’s own annual report, which it must send you every year, has 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 2022 to 2023.

Testing your own tap

South Trail Commerce’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 South Trail Commerce 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 RI2980487. Rebuilt from EPA data on Oct. 18, 2026.

Also in Washington County

All Rhode Island utilities

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