TapSafetyReport
C41/100

Woonsocket Tap Water Quality: Is It Safe to Drink? (2026 Report)

Serving 45,828 residents · Rhode Island

What's In Woonsocket's Tap Water?

69
Contaminants Tested
0
Exceed EPA Limits
1
Above EPA Goals
1 contaminant above EPA health goals
ContaminantDetectedLimit (MCL)Status
Lead (90th percentile)
0.007 mg/L0.015 mg/LAbove Goal

EPA Violation History

8

Violations (last 5yr)

0

Unresolved

0

Health-Related

TIER 3Resolved

Surface water treatment technique failure

When: July 1, 2025 – July 7, 2025Enforcement: Resolving — corrective action underway
TIER 3Resolved

Failed Level 2 Assessment under Revised Total Coliform Rule

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: December 1, 2021 – December 31, 2021Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved

Failed Level 2 Assessment under Revised Total Coliform Rule

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: November 1, 2021 – November 30, 2021Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved

Failed Level 2 Assessment under Revised Total Coliform Rule

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: October 1, 2021 – October 31, 2021Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved

Failed Level 2 Assessment under Revised Total Coliform Rule

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: September 1, 2021 – September 30, 2021Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved

Failed Level 2 Assessment under Revised Total Coliform Rule

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: August 1, 2021 – August 31, 2021Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved

Monitoring / Reporting Violation

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: July 1, 2021 – December 31, 2021Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Failed Level 2 Assessment under Revised Total Coliform Rule

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: July 1, 2021 – July 31, 2021Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway

Understanding violation severity

Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.

Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly

Water Utility Details

WOONSOCKET WATER DIVISION
Population Served

45,828

Water Source

Surface Water

System ID

RI1559518

Frequently Asked Questions About Woonsocket Water

Is Woonsocket tap water safe to drink?

Woonsocket, Rhode Island tap water receives a grade of C (41/100), which is considered fair. 0 contaminant(s) exceed EPA maximum contaminant levels and 28 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.

What contaminants are in Woonsocket's water?

Of the 69 contaminants tested in Woonsocket's water supply, the most notable include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.

Does Woonsocket have any water quality violations?

Yes, Woonsocket has 28 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, MR, TT. 7 of these are health-based violations, which are the most serious category.

Do I need a water filter in Woonsocket?

Woonsocket water meets EPA standards, so a filter is not strictly necessary. However, some residents prefer the added security of a water filter. EPA health goals (MCLGs) are stricter than legal limits and are set at levels with zero expected health risk. 1 contaminant(s) exceed these stricter goals.

Where does Woonsocket's tap water come from?

Woonsocket's drinking water is sourced from surface water and supplied by WOONSOCKET WATER DIVISION. The system serves approximately 45,828 people. Surface water sources include rivers, lakes, and reservoirs.

How often is Woonsocket's water tested?

Under the Safe Drinking Water Act (SDWA), water utilities are required to regularly test for over 90 contaminants. Testing frequency varies by contaminant — some are tested monthly, others quarterly or annually. Woonsocket's water systems must report results to the EPA and publish an annual Consumer Confidence Report (CCR). The data on this page reflects the latest available EPA testing data.

How does Woonsocket's water compare to other cities in Rhode Island?

Woonsocket's water quality score of 41/100 earns a grade of C, which is considered fair. This is a below-average score that indicates room for improvement. Visit our Rhode Island state page to see how all cities in the state compare.

What should I do if I'm concerned about Woonsocket's water quality?

If you have concerns about Woonsocket's tap water, consider these steps: (1) Request your utility's annual Consumer Confidence Report for detailed local data. (2) Get your water independently tested through a state-certified laboratory. (3) Consider an NSF-certified water filter rated for the contaminants found in your area. (4) Contact your water utility (WOONSOCKET WATER DIVISION) with specific questions. (5) Report water quality issues to your state drinking water program or the EPA Safe Drinking Water Hotline at 800-426-4791.

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