PlainWater
States → Connecticut

Community Water System · PWS CT0400041

Gqc Well Commission

Vernon, Connecticut 06066 - drinking water served from groundwater sources to 360 people, tracked in EPA SDWIS and UCMR5.

360
People served
340
EPA violations
85
Health-based
Untested
UCMR5 result

The verdict

EPA records 340 drinking-water violations at Gqc Well Commission, 25% of them health-based - above the Connecticut per-system average.

340
Total EPA violations on record
25%
Health-based (MCL / treatment failure)
360
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Gqc Well Commission

Gqc Well Commission is a private-owned community water system that delivers drinking water to 360 residents in Vernon, Connecticut (Hartford County) through 120 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 340 total violations for this system , of which 85 (25%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 226 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 84 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 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. Statewide, 40 of 63 UCMR5-tested systems have reported PFAS detections (63.5%).

Gqc Well Commission's 340 violations sit above the Connecticut 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
360
Total Violations
340
Health-Based Violations
85
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
120
County
Hartford
School/Daycare
No
MCL Violations
84
Monitoring Violations
226
Treatment Tech Violations
1

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 84 2013
Coliform (TCR) MR 23 2015
Lead and Copper Rule MR 8 2021
Consumer Confidence Rule Other 8 2025
1,2,4-Trichlorobenzene MR 8 2008
cis-1,2-Dichloroethylene MR 8 2008
DICHLOROMETHANE MR 8 2008
o-Dichlorobenzene MR 8 2008
trans-1,2-Dichloroethylene MR 8 2008
1,1,1-Trichloroethane MR 8 2008
1,2-Dichloropropane MR 8 2008
Tetrachloroethylene MR 8 2008
Ethylbenzene MR 8 2008
Vinyl chloride MR 8 2008
1,1-Dichloroethylene MR 8 2008
1,2-Dichloroethane MR 8 2008
CHLOROBENZENE MR 8 2008
Toluene MR 8 2008
Styrene MR 8 2008
Trichloroethylene MR 8 2008
1,1,2-Trichloroethane MR 8 2008
Benzene MR 8 2008
p-Dichlorobenzene MR 8 2008
Carbon tetrachloride MR 8 2008
TTHM MR 6 2021
Public Notice Other 5 2022
E. COLI MR 4 2011
Total Haloacetic Acids (HAA5) MR 4 2017
Groundwater Rule MR 3 2018
Nitrate MR 2 2007

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 Gqc Well Commission.

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 CT0400041 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
2025 Consumer Confidence Rule Other 8 SDWIS / CT0400041 / 7000
2024 LEAD AND COPPER RULE REVISIONS TT 1 SDWIS / CT0400041 / 5200
2024 LEAD AND COPPER RULE REVISIONS RPT 1 SDWIS / CT0400041 / 5200
2022 Public Notice Other 5 SDWIS / CT0400041 / 7500
2021 Lead and Copper Rule MR 8 SDWIS / CT0400041 / 5000
2021 TTHM MR 6 SDWIS / CT0400041 / 2950
2020 Gross Alpha, Excl. Radon and U MR 2 SDWIS / CT0400041 / 4000
2020 Combined Uranium MR 2 SDWIS / CT0400041 / 4006
2018 Groundwater Rule MR 3 SDWIS / CT0400041 / 0700
2017 Total Haloacetic Acids (HAA5) MR 4 SDWIS / CT0400041 / 2456
2017 2,4-D MR 2 SDWIS / CT0400041 / 2105
2017 Picloram MR 2 SDWIS / CT0400041 / 2040
2017 Dalapon MR 2 SDWIS / CT0400041 / 2031
2017 Dinoseb MR 2 SDWIS / CT0400041 / 2041
2017 2,4,5-TP MR 2 SDWIS / CT0400041 / 2110

How Gqc Well Commission Compares

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

Metric Gqc Well Commission Connecticut avg Federal benchmark
Total violations 340 88.6 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 85 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 360 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 (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 Gqc Well Commission water safe to drink? ▼
Gqc Well Commission (PWS ID: CT0400041) has 340 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 360 people using Groundwater sources.
How many people does Gqc Well Commission serve? ▼
Gqc Well Commission serves 360 people in Vernon, Connecticut. It is a Private-owned system using Groundwater water sources with 120 service connections.
What type of violations does Gqc Well Commission have? ▼
Gqc Well Commission has 340 total violations: 85 health-based violations (MCL exceedances or treatment failures), 226 monitoring/reporting violations, and 1 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Gqc Well Commission water? ▼
No PFAS testing data is available for Gqc Well Commission under the EPA's UCMR5 monitoring program.
What water source does Gqc Well Commission use? ▼
Gqc Well Commission 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.
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.