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Community Water System · PWS RI1615614

Slatersville Public Supply

North Smithfield, Rhode Island 02986 - drinking water served from surface water sources to 3,403 people, tracked in EPA SDWIS and UCMR5.

3,403
People served
106
EPA violations
51
Health-based
Untested
UCMR5 result

The verdict

EPA records 106 drinking-water violations at Slatersville Public Supply, 48% of them health-based - above the Rhode Island per-system average.

106
Total EPA violations on record
48%
Health-based (MCL / treatment failure)
3,403
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Slatersville Public Supply

Slatersville Public Supply is a local-owned community water system that delivers drinking water to 3,403 residents in North Smithfield, Rhode Island (Providence County) through 540 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 106 total violations for this system , of which 51 (48%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 38 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 50 violations (MCL, health-based). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Rhode Island, EPA tracks 463 public water systems serving 1,159,492 people, with 33,766 cumulative violations and 8,949 health-based violations on record. About 96% of systems in the state carry at least one violation, and state-wide the average per system is 72.9 violations. Statewide, 15 of 29 UCMR5-tested systems have reported PFAS detections (51.7%).

Slatersville Public Supply's 106 violations sit above the Rhode Island average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
3,403
Total Violations
106
Health-Based Violations
51
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
540
County
Providence
School/Daycare
No
MCL Violations
51
Monitoring Violations
38
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 50 2008
Coliform (TCR) MR 17 2008
Consumer Confidence Rule Other 10 2004
Atrazine MR 8 1995
Lead and Copper Rule MR 8 2023
Di(2-ethylhexyl) phthalate MR 5 2015
Public Notice Other 5 2008
TTHM MCL 1 2025

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Slatersville Public Supply.

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID RI1615614 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Rhode Island Drinking Water Authority

Rhode Island's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find RI regulator via EPA SDWIS

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2025 TTHM MCL 1 SDWIS / RI1615614 / 2950
2023 Lead and Copper Rule MR 8 SDWIS / RI1615614 / 5000
2015 Di(2-ethylhexyl) phthalate MR 5 SDWIS / RI1615614 / 2039
2008 Coliform (TCR) MCL 50 SDWIS / RI1615614 / 3100
2008 Coliform (TCR) MR 17 SDWIS / RI1615614 / 3100
2008 Public Notice Other 5 SDWIS / RI1615614 / 7500
2004 Consumer Confidence Rule Other 10 SDWIS / RI1615614 / 7000
1995 Atrazine MR 8 SDWIS / RI1615614 / 2050

How Slatersville Public Supply Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Slatersville Public Supply Rhode Island avg Federal benchmark
Total violations 106 72.9 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 51 19.3 Indicates a contaminant exceeded a federal MCL
PFAS detection None 51.7% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 3,403 2,504 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 463 regulated public water systems in Rhode Island.

Federal MCL reference, Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Slatersville Public Supply water safe to drink? ▼
Slatersville Public Supply (PWS ID: RI1615614) has 106 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 3,403 people using Surface Water sources.
How many people does Slatersville Public Supply serve? ▼
Slatersville Public Supply serves 3,403 people in North Smithfield, Rhode Island. It is a Local-owned system using Surface Water water sources with 540 service connections.
What type of violations does Slatersville Public Supply have? ▼
Slatersville Public Supply has 106 total violations: 51 health-based violations (MCL exceedances or treatment failures), 38 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Slatersville Public Supply water? ▼
No PFAS testing data is available for Slatersville Public Supply under the EPA's UCMR5 monitoring program.
What water source does Slatersville Public Supply use? ▼
Slatersville Public Supply uses Surface Water as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.