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WESTON WATER SUPPLY

PWS ID: CT1570011 · WESTON, Connecticut 06883

WESTON WATER SUPPLY serves 100 people in WESTON, Connecticut using Groundwater water sources. It has 321 recorded EPA violations, including 15 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: WESTON WATER SUPPLY

WESTON WATER SUPPLY is a local-owned community water system that delivers drinking water to 100 residents in WESTON, Connecticut (Fairfield County) through 30 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 321 total violations for this system , of which 15 (5%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 255 monitoring and reporting violations are on file. The most recent violation on record dates to 2021.

The most frequently cited contaminant at this system is E. COLI, recorded in 27 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 Connecticut, EPA tracks 2,332 public water systems serving 2,886,005 people, with 206,662 cumulative violations and 21,779 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 88.6 violations. WESTON WATER SUPPLY's 321 violations sit above the Connecticut average. Statewide, 40 of 63 UCMR5-tested systems have reported PFAS detections (63.5%). 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
100
Total Violations
321
Health-Based Violations
15
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
30
County
Fairfield
School/Daycare
No
MCL Violations
10
Monitoring Violations
255
Treatment Tech Violations
5

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
E. COLI MR 27 2017
Chlorine MR 16 2020
Lead and Copper Rule MR 14 2021
Total Haloacetic Acids (HAA5) MR 14 2018
TTHM MR 14 2018
Consumer Confidence Rule Other 11 2020
Coliform (TCR) MCL 10 1998
Public Notice Other 8 2020
Gross Alpha, Excl. Radon and U MR 6 2011
Coliform (TCR) MR 6 2016
Lead and Copper Rule TT 5 2020
ManMade Beta Particle and Photon Emitter MR 4 2011
Nitrate MR 4 2017
Gross Beta Particle Activity MR 4 2011
Nitrite MR 4 2017
p-Dichlorobenzene MR 3 2011
Vinyl chloride MR 3 2011
1,1-Dichloroethylene MR 3 2011
1,1,1-Trichloroethane MR 3 2011
Carbon tetrachloride MR 3 2011
Benzene MR 3 2011
Trichloroethylene MR 3 2011
1,2-Dichloroethane MR 3 2011
1,2,4-Trichlorobenzene MR 2 2011
1,2-Dichloropropane MR 2 2011
Ethylbenzene MR 2 2011
Styrene MR 2 2011
Arsenic MR 2 2011
Cadmium MR 2 2011
Chromium MR 2 2011

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 WESTON WATER 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 CT1570011 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Connecticut Drinking Water Authority

Connecticut'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 CT 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
2021 Lead and Copper Rule MR 14 SDWIS / CT1570011 / 5000
2020 Chlorine MR 16 SDWIS / CT1570011 / 0999
2020 Consumer Confidence Rule Other 11 SDWIS / CT1570011 / 7000
2020 Public Notice Other 8 SDWIS / CT1570011 / 7500
2020 Lead and Copper Rule TT 5 SDWIS / CT1570011 / 5000
2018 Total Haloacetic Acids (HAA5) MR 14 SDWIS / CT1570011 / 2456
2018 TTHM MR 14 SDWIS / CT1570011 / 2950
2017 E. COLI MR 27 SDWIS / CT1570011 / 3014
2017 Nitrate MR 4 SDWIS / CT1570011 / 1040
2017 Nitrite MR 4 SDWIS / CT1570011 / 1041
2016 Coliform (TCR) MR 6 SDWIS / CT1570011 / 3100
2011 Gross Alpha, Excl. Radon and U MR 6 SDWIS / CT1570011 / 4000
2011 ManMade Beta Particle and Photon Emitter MR 4 SDWIS / CT1570011 / 4101
2011 Gross Beta Particle Activity MR 4 SDWIS / CT1570011 / 4100
2011 p-Dichlorobenzene MR 3 SDWIS / CT1570011 / 2969

How WESTON WATER SUPPLY Compares

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

Metric WESTON WATER SUPPLY Connecticut avg Federal benchmark
Total violations 321 88.6 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 15 9.3 Indicates a contaminant exceeded a federal MCL
PFAS detection None 63.5% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 100 1,238 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 2,332 regulated public water systems in Connecticut.

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
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is WESTON WATER SUPPLY water safe to drink? ▼
WESTON WATER SUPPLY (PWS ID: CT1570011) has 321 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 100 people using Groundwater sources.
How many people does WESTON WATER SUPPLY serve? ▼
WESTON WATER SUPPLY serves 100 people in WESTON, Connecticut. It is a Local-owned system using Groundwater water sources with 30 service connections.
What type of violations does WESTON WATER SUPPLY have? ▼
WESTON WATER SUPPLY has 321 total violations: 15 health-based violations (MCL exceedances or treatment failures), 255 monitoring/reporting violations, and 5 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in WESTON WATER SUPPLY water? ▼
No PFAS testing data is available for WESTON WATER SUPPLY under the EPA's UCMR5 monitoring program.
What water source does WESTON WATER SUPPLY use? ▼
WESTON WATER SUPPLY uses Groundwater 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.

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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.

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