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Community Water System · PWS VT0005181

Thetford Water Coop Inc

Thetford, Vermont 05074 - drinking water served from groundwater sources to 115 people, tracked in EPA SDWIS and UCMR5.

115
People served
371
EPA violations
34
Health-based
Untested
UCMR5 result

The verdict

EPA records 371 drinking-water violations at Thetford Water Coop Inc, 9% of them health-based - above the Vermont per-system average.

371
Total EPA violations on record
9%
Health-based (MCL / treatment failure)
115
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Thetford Water Coop Inc

Thetford Water Coop Inc is a private-owned community water system that delivers drinking water to 115 residents in Thetford, Vermont (Orange County) through 40 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 371 total violations for this system , of which 34 (9%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 323 monitoring and reporting violations are on file. The most recent violation on record dates to 2023.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 54 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 Vermont, EPA tracks 1,357 public water systems serving 646,999 people, with 153,729 cumulative violations and 16,917 health-based violations on record. About 93% of systems in the state carry at least one violation, and state-wide the average per system is 113.3 violations. Statewide, 3 of 37 UCMR5-tested systems have reported PFAS detections (8.1%).

Thetford Water Coop Inc's 371 violations sit above the Vermont 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
115
Total Violations
371
Health-Based Violations
34
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
40
County
Orange
School/Daycare
No
MCL Violations
31
Monitoring Violations
323
Treatment Tech Violations
3

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 54 2014
Coliform (TCR) MCL 26 2013
CYANIDE MR 11 2010
1,2,4-Trichlorobenzene MR 10 2009
Xylenes, Total MR 10 2009
DICHLOROMETHANE MR 10 2009
o-Dichlorobenzene MR 10 2009
trans-1,2-Dichloroethylene MR 10 2009
1,1,1-Trichloroethane MR 10 2009
Trichloroethylene MR 10 2009
1,1,2-Trichloroethane MR 10 2009
Tetrachloroethylene MR 10 2009
CHLOROBENZENE MR 10 2009
Benzene MR 10 2009
Toluene MR 10 2009
Ethylbenzene MR 10 2009
Styrene MR 10 2009
cis-1,2-Dichloroethylene MR 10 2009
Vinyl chloride MR 10 2009
1,1-Dichloroethylene MR 10 2009
1,2-Dichloroethane MR 10 2009
Carbon tetrachloride MR 10 2009
1,2-Dichloropropane MR 10 2009
p-Dichlorobenzene MR 10 2009
Total Haloacetic Acids (HAA5) MR 9 2018
TTHM MR 9 2018
Chlorine MR 8 2011
Lead and Copper Rule MR 7 2008
Nitrate MR 6 2016
Revised Total Coliform Rule MCL 5 2017

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 Thetford Water Coop Inc.

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 VT0005181 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Vermont Drinking Water Authority

Vermont'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 VT 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
2023 Revised Total Coliform Rule MON 4 SDWIS / VT0005181 / 8000
2018 Total Haloacetic Acids (HAA5) MR 9 SDWIS / VT0005181 / 2456
2018 TTHM MR 9 SDWIS / VT0005181 / 2950
2017 Revised Total Coliform Rule MCL 5 SDWIS / VT0005181 / 8000
2016 Nitrate MR 6 SDWIS / VT0005181 / 1040
2014 Coliform (TCR) MR 54 SDWIS / VT0005181 / 3100
2013 Coliform (TCR) MCL 26 SDWIS / VT0005181 / 3100
2011 Chlorine MR 8 SDWIS / VT0005181 / 0999
2010 CYANIDE MR 11 SDWIS / VT0005181 / 1024
2009 1,2,4-Trichlorobenzene MR 10 SDWIS / VT0005181 / 2378
2009 Xylenes, Total MR 10 SDWIS / VT0005181 / 2955
2009 DICHLOROMETHANE MR 10 SDWIS / VT0005181 / 2964
2009 o-Dichlorobenzene MR 10 SDWIS / VT0005181 / 2968
2009 trans-1,2-Dichloroethylene MR 10 SDWIS / VT0005181 / 2979
2009 1,1,1-Trichloroethane MR 10 SDWIS / VT0005181 / 2981

How Thetford Water Coop Inc Compares

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

Metric Thetford Water Coop Inc Vermont avg Federal benchmark
Total violations 371 113.3 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 34 12.5 Indicates a contaminant exceeded a federal MCL
PFAS detection None 8.1% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 115 477 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 1,357 regulated public water systems in Vermont.

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 Thetford Water Coop Inc water safe to drink? ▼
Thetford Water Coop Inc (PWS ID: VT0005181) has 371 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 115 people using Groundwater sources.
How many people does Thetford Water Coop Inc serve? ▼
Thetford Water Coop Inc serves 115 people in Thetford, Vermont. It is a Private-owned system using Groundwater water sources with 40 service connections.
What type of violations does Thetford Water Coop Inc have? ▼
Thetford Water Coop Inc has 371 total violations: 34 health-based violations (MCL exceedances or treatment failures), 323 monitoring/reporting violations, and 3 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Thetford Water Coop Inc water? ▼
No PFAS testing data is available for Thetford Water Coop Inc under the EPA's UCMR5 monitoring program.
What water source does Thetford Water Coop Inc use? ▼
Thetford Water Coop Inc 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.