B75/100
Warwick Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 88,171 residents · Rhode Island
What's In Warwick's Tap Water?
69
Contaminants Tested
0
Exceed EPA Limits
1
Above EPA Goals
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
3
Violations (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Monitoring violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: December 11, 2021 – December 15, 2021Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Disinfection byproduct treatment technique failure
When: September 5, 2021 – December 21, 2021Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2021 – December 21, 2021Enforcement: 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
WARWICK-CITY OF
Population Served
73,289
Water Source
Purchased Surface Water
System ID
RI1615627
WARWICK-POTOWOMUT
Population Served
2,163
Water Source
Purchased Surface Water
System ID
RI1900051
CNE - NEW LONDON TURNPIKE ENTRY POINT
Population Served
9,999
Water Source
Purchased Groundwater
System ID
RI2980453
DOWLING VILLAGE
Population Served
2,720
Water Source
Purchased Surface Water
System ID
RI2980476
Frequently Asked Questions About Warwick Water
Is Warwick tap water safe to drink?
Warwick, Rhode Island tap water receives a grade of B (75/100), which is considered good. Out of 70 contaminants tested, 1 exceed EPA maximum contaminant levels (MCLs) and 2 exceed health guidelines (MCLGs). While the water meets federal standards, some residents may still choose to use a filter for additional peace of mind.
What contaminants are in Warwick's water?
Of the 70 contaminants tested in Warwick's water supply, the most notable include Copper (90th percentile), Lead (90th percentile). 1 contaminant(s) exceed EPA legal limits (MCLs). 2 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Warwick have any water quality violations?
Yes, Warwick has 67 EPA violation(s) on record, with the most recent in 2024. Violation types include Other, MR, RPT. 4 of these are health-based violations, which are the most serious category.
Do I need a water filter in Warwick?
Based on EPA data, using a water filter in Warwick is recommended. 1 contaminant(s) exceed legal limits. An NSF-certified filter — such as a reverse osmosis or activated carbon system — can effectively reduce many common contaminants. Choose a filter certified to remove the specific contaminants found in your area.
Where does Warwick's tap water come from?
Warwick's drinking water is sourced from purchased surface water and supplied by WARWICK-CITY OF and 3 other water system(s). The system serves approximately 88,171 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Warwick'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. Warwick'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 Warwick's water compare to other cities in Rhode Island?
Warwick's water quality score of 75/100 earns a grade of B, which is considered good. This is an above-average score compared to many cities nationwide. Visit our Rhode Island state page to see how all cities in the state compare.
What should I do if I'm concerned about Warwick's water quality?
If you have concerns about Warwick'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 (WARWICK-CITY OF) 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.