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Water system · PWSID RI1559512

WESTERLY WATER DEPARTMENT

WESTERLY, RI · ~35,298 people served

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Fair

PurityRadar safety score

PWSID

RI1559512

State

Rhode Island

City

WESTERLY

Population served

35,298

Primary source

Groundwater

Score history

▼ 47 points — the score moved from 100 to 53 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 53

2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.

PFAS & contaminant readings

Latest detections from EPA’s UCMR5 monitoring (through Sep 2025). Levels in parts per trillion (ppt).

PFOA

Perfluorooctanoic acid

6 ppt

limit 4 ppt

Above EPA limit · 1.5×

PFOS

Perfluorooctanesulfonic acid

4 ppt

limit 4 ppt

Near EPA limit

PFBA

10 ppt

limit —

No federal limit

PFBS

3 ppt

limit —

No federal limit

PFHpA

3 ppt

limit —

No federal limit

PFHxA

3 ppt

limit —

No federal limit

PFPeA

3 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

162

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement May 2023. Official EPA record →

Reporting · Lead & Copper Rule began Jan 2023 Resolved

Monitoring & reporting · EPA contaminant 3014 began Dec 2022 Resolved

Monitoring & reporting · EPA contaminant 0700 began Dec 2020 Resolved

Monitoring & reporting · EPA contaminant 2039 began Oct 2020 Resolved

Monitoring & reporting · EPA contaminant 2031 began Oct 2020 Resolved

Monitoring & reporting · EPA contaminant 2036 began Oct 2020 Resolved

Monitoring & reporting · EPA contaminant 2035 began Oct 2020 Resolved

Monitoring & reporting · EPA contaminant 2020 began Oct 2020 Resolved

Monitoring & reporting · EPA contaminant 2015 began Oct 2020 Resolved

Monitoring & reporting · EPA contaminant 2010 began Oct 2020 Resolved

Monitoring & reporting · EPA contaminant 2005 began Oct 2020 Resolved

Monitoring & reporting · EPA contaminant 2037 began Oct 2020 Resolved

Recent enforcement actions

State action · SIF May 2023
State action · SIF May 2023
State action · SIE Jan 2023
State action · SFJ Jan 2023
State action · SIA Jan 2023
State action · SIE Jan 2023
State action · SIA Jan 2023
State action · SFJ Jan 2023

Area water-quality monitoring

Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.

ContaminantMedian · max · samples

Nitrate

2 stations · latest Jul 2023

0.445 · max 0.993 mg/l as N · 93

Copper

1 station · latest Sep 2023

0.785 · max 2.8 ug/l · 14

Lead

1 station · latest Sep 2023

0.275 · max 0.377 ug/l · 14

Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.

This profile is built from EPA public records for system RI1559512 — SDWIS violations and UCMR5 PFAS sampling. The score is system-level and can’t account for your home’s plumbing (older pipes can add lead at the tap). For health decisions, check your exact address, read the utility’s Consumer Confidence Report, and confirm with your provider.