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Non-Transient Non-Community Water System · PWS CT0819013

Middlebury Elementary School

Middlebury, Connecticut 06762 - drinking water served from groundwater sources to 412 people, tracked in EPA SDWIS and UCMR5.

412
People served
90
EPA violations
8
Health-based
Untested
UCMR5 result

The verdict

EPA records 90 drinking-water violations at Middlebury Elementary School, 9% of them health-based - above the Connecticut per-system average.

90
Total EPA violations on record
9%
Health-based (MCL / treatment failure)
412
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Middlebury Elementary School

Middlebury Elementary School is a local-owned non-transient non-community water system that delivers drinking water to 412 residents in Middlebury, Connecticut (New Haven County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 90 total violations for this system , of which 8 (9%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 82 monitoring and reporting violations are on file. The most recent violation on record dates to 2004.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 8 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%).

Middlebury Elementary School's 90 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
412
Total Violations
90
Health-Based Violations
8
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Local
Connections
1
County
New Haven
School/Daycare
Yes
MCL Violations
8
Monitoring Violations
82
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 8 2002
CHLOROBENZENE MR 4 2004
Toluene MR 4 2004
Styrene MR 4 2004
cis-1,2-Dichloroethylene MR 4 2004
p-Dichlorobenzene MR 4 2004
Vinyl chloride MR 4 2004
1,1-Dichloroethylene MR 4 2004
trans-1,2-Dichloroethylene MR 4 2004
1,2-Dichloroethane MR 4 2004
Carbon tetrachloride MR 4 2004
1,1,2-Trichloroethane MR 4 2004
Tetrachloroethylene MR 4 2004
o-Dichlorobenzene MR 4 2004
Benzene MR 4 2004
1,2-Dichloropropane MR 4 2004
Trichloroethylene MR 4 2004
Ethylbenzene MR 4 2004
1,2,4-Trichlorobenzene MR 4 2004
DICHLOROMETHANE MR 4 2004
1,1,1-Trichloroethane MR 4 2004
Coliform (TCR) MR 2 2004

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 Middlebury Elementary School.

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 CT0819013 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
2004 CHLOROBENZENE MR 4 SDWIS / CT0819013 / 2989
2004 Toluene MR 4 SDWIS / CT0819013 / 2991
2004 Styrene MR 4 SDWIS / CT0819013 / 2996
2004 cis-1,2-Dichloroethylene MR 4 SDWIS / CT0819013 / 2380
2004 p-Dichlorobenzene MR 4 SDWIS / CT0819013 / 2969
2004 Vinyl chloride MR 4 SDWIS / CT0819013 / 2976
2004 1,1-Dichloroethylene MR 4 SDWIS / CT0819013 / 2977
2004 trans-1,2-Dichloroethylene MR 4 SDWIS / CT0819013 / 2979
2004 1,2-Dichloroethane MR 4 SDWIS / CT0819013 / 2980
2004 Carbon tetrachloride MR 4 SDWIS / CT0819013 / 2982
2004 1,1,2-Trichloroethane MR 4 SDWIS / CT0819013 / 2985
2004 Tetrachloroethylene MR 4 SDWIS / CT0819013 / 2987
2004 o-Dichlorobenzene MR 4 SDWIS / CT0819013 / 2968
2004 Benzene MR 4 SDWIS / CT0819013 / 2990
2004 1,2-Dichloropropane MR 4 SDWIS / CT0819013 / 2983

How Middlebury Elementary School Compares

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

Metric Middlebury Elementary School Connecticut avg Federal benchmark
Total violations 90 88.6 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 8 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 412 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 Middlebury Elementary School water safe to drink? ▼
Middlebury Elementary School (PWS ID: CT0819013) has 90 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 412 people using Groundwater sources.
How many people does Middlebury Elementary School serve? ▼
Middlebury Elementary School serves 412 people in Middlebury, Connecticut. It is a Local-owned system using Groundwater water sources with 1 service connections.
What type of violations does Middlebury Elementary School have? ▼
Middlebury Elementary School has 90 total violations: 8 health-based violations (MCL exceedances or treatment failures), 82 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Middlebury Elementary School water? ▼
No PFAS testing data is available for Middlebury Elementary School under the EPA's UCMR5 monitoring program.
What water source does Middlebury Elementary School use? ▼
Middlebury Elementary School uses Groundwater as its primary water source. It is classified as a Non-Transient Non-Community Water System, serving the same people for at least 6 months per year.
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.