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Community Water System · PWS NY5103294

Fishers Island Water Works

Fishers Island, New York 06390 - drinking water served from surface water sources to 300 people, tracked in EPA SDWIS and UCMR5.

300
People served
183
EPA violations
10
Health-based
Untested
UCMR5 result

The verdict

EPA records 183 drinking-water violations at Fishers Island Water Works, 5% of them health-based - above the New York per-system average.

183
Total EPA violations on record
5%
Health-based (MCL / treatment failure)
300
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Fishers Island Water Works

Fishers Island Water Works is a local-owned community water system that delivers drinking water to 300 residents in Fishers Island, New York (Suffolk County) through 628 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 183 total violations for this system , of which 10 (5%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 136 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is TTHM, recorded in 11 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across New York, EPA tracks 8,098 public water systems serving 19,294,951 people, with 552,003 cumulative violations and 26,817 health-based violations on record. About 94% of systems in the state carry at least one violation, and state-wide the average per system is 68.2 violations. Statewide, 129 of 332 UCMR5-tested systems have reported PFAS detections (38.9%).

Fishers Island Water Works's 183 violations sit above the New York 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
300
Total Violations
183
Health-Based Violations
10
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
628
County
Suffolk
School/Daycare
No
MCL Violations
10
Monitoring Violations
136
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
TTHM MR 11 2022
Coliform (TCR) MCL 10 2012
Coliform (TCR) MR 9 2015
Consumer Confidence Rule Other 6 2008
Revised Total Coliform Rule MON 6 2024
Radium-228 MR 6 2012
Total Haloacetic Acids (HAA5) MR 5 2022
Dalapon MR 3 2008
Simazine MR 3 2008
Di(2-ethylhexyl) phthalate MR 3 2008
Picloram MR 3 2008
Hexachlorocyclopentadiene MR 3 2008
Aldicarb sulfone MR 3 2008
Carbofuran MR 3 2008
Atrazine MR 3 2008
Heptachlor MR 3 2008
2,4,5-TP MR 3 2008
Benzo(a)pyrene MR 3 2008
Pentachlorophenol MR 3 2008
Total Polychlorinated Biphenyls (PCB) MR 3 2008
Lead and Copper Rule MR 3 2008
Combined Uranium MR 3 2012
Radium-226 MR 3 2012
Endrin MR 3 2008
Methoxychlor MR 3 2008
HEXACHLOROBENZENE MR 3 2008
Chlordane MR 3 2008
Aldicarb MR 3 2008
Dinoseb MR 3 2008
Toxaphene MR 3 2008

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 Fishers Island Water Works.

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 NY5103294 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

New York Drinking Water Authority

New York State Department of Health, Public Water Systems is the primacy agency that licenses and inspects Fishers Island Water Works under EPA-delegated authority.

Open NY regulator portal

Source: New York State Department of Health, Public Water Systems

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
2024 Revised Total Coliform Rule MON 6 SDWIS / NY5103294 / 8000
2022 TTHM MR 11 SDWIS / NY5103294 / 2950
2022 Total Haloacetic Acids (HAA5) MR 5 SDWIS / NY5103294 / 2456
2016 Surface Water Treatment Rule MR 3 SDWIS / NY5103294 / 0200
2015 Coliform (TCR) MR 9 SDWIS / NY5103294 / 3100
2012 Coliform (TCR) MCL 10 SDWIS / NY5103294 / 3100
2012 Radium-228 MR 6 SDWIS / NY5103294 / 4030
2012 Combined Uranium MR 3 SDWIS / NY5103294 / 4006
2012 Radium-226 MR 3 SDWIS / NY5103294 / 4020
2012 Combined Radium (-226 and -228) MR 3 SDWIS / NY5103294 / 4010
2008 Consumer Confidence Rule Other 6 SDWIS / NY5103294 / 7000
2008 Dalapon MR 3 SDWIS / NY5103294 / 2031
2008 Simazine MR 3 SDWIS / NY5103294 / 2037
2008 Di(2-ethylhexyl) phthalate MR 3 SDWIS / NY5103294 / 2039
2008 Picloram MR 3 SDWIS / NY5103294 / 2040

How Fishers Island Water Works Compares

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

Metric Fishers Island Water Works New York avg Federal benchmark
Total violations 183 68.2 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 10 3.3 Indicates a contaminant exceeded a federal MCL
PFAS detection None 38.9% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 300 2,383 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 8,098 regulated public water systems in New York.

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 Fishers Island Water Works water safe to drink? ▼
Fishers Island Water Works (PWS ID: NY5103294) has 183 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 300 people using Surface Water sources.
How many people does Fishers Island Water Works serve? ▼
Fishers Island Water Works serves 300 people in Fishers Island, New York. It is a Local-owned system using Surface Water water sources with 628 service connections.
What type of violations does Fishers Island Water Works have? ▼
Fishers Island Water Works has 183 total violations: 10 health-based violations (MCL exceedances or treatment failures), 136 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Fishers Island Water Works water? ▼
No PFAS testing data is available for Fishers Island Water Works under the EPA's UCMR5 monitoring program.
What water source does Fishers Island Water Works use? ▼
Fishers Island Water Works 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.