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COVENTRY GRAMMAR SCHOOL

PWS ID: CT0320302 · COVENTRY, Connecticut 06238

COVENTRY GRAMMAR SCHOOL serves 558 people in COVENTRY, Connecticut using Groundwater water sources. It has 100 recorded EPA violations, including 1 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: COVENTRY GRAMMAR SCHOOL

COVENTRY GRAMMAR SCHOOL is a local-owned non-transient non-community water system that delivers drinking water to 558 residents in COVENTRY, Connecticut (Tolland County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 100 total violations for this system , of which 1 (1%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 98 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 Coliform (TCR), recorded in 7 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. COVENTRY GRAMMAR SCHOOL's 100 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
558
Total Violations
100
Health-Based Violations
1
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Local
Connections
1
County
Tolland
School/Daycare
Yes
MCL Violations
0
Monitoring Violations
98
Treatment Tech Violations
1

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 7 2003
Cadmium MR 4 2002
Chromium MR 4 2002
Fluoride MR 4 2002
Mercury MR 4 2002
Beryllium, Total MR 4 2002
Selenium MR 4 2002
Arsenic MR 4 2002
Barium MR 4 2002
CYANIDE MR 4 2002
Antimony, Total MR 4 2002
Thallium, Total MR 4 2002
Nickel MR 4 2002
Lead and Copper Rule MR 3 2022
cis-1,2-Dichloroethylene MR 2 2003
DICHLOROMETHANE MR 2 2003
o-Dichlorobenzene MR 2 2003
trans-1,2-Dichloroethylene MR 2 2003
1,2-Dichloroethane MR 2 2003
1,1,1-Trichloroethane MR 2 2003
Carbon tetrachloride MR 2 2003
1,2-Dichloropropane MR 2 2003
CHLOROBENZENE MR 2 2003
Benzene MR 2 2003
Toluene MR 2 2003
p-Dichlorobenzene MR 2 2003
1,1,2-Trichloroethane MR 2 2003
Ethylbenzene MR 2 2003
1,2,4-Trichlorobenzene MR 2 2003
Styrene MR 2 2003

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 COVENTRY GRAMMAR 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 CT0320302 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
2024 LEAD AND COPPER RULE REVISIONS TT 1 SDWIS / CT0320302 / 5200
2024 LEAD AND COPPER RULE REVISIONS RPT 1 SDWIS / CT0320302 / 5200
2022 Lead and Copper Rule MR 3 SDWIS / CT0320302 / 5000
2003 Coliform (TCR) MR 7 SDWIS / CT0320302 / 3100
2003 cis-1,2-Dichloroethylene MR 2 SDWIS / CT0320302 / 2380
2003 DICHLOROMETHANE MR 2 SDWIS / CT0320302 / 2964
2003 o-Dichlorobenzene MR 2 SDWIS / CT0320302 / 2968
2003 trans-1,2-Dichloroethylene MR 2 SDWIS / CT0320302 / 2979
2003 1,2-Dichloroethane MR 2 SDWIS / CT0320302 / 2980
2003 1,1,1-Trichloroethane MR 2 SDWIS / CT0320302 / 2981
2003 Carbon tetrachloride MR 2 SDWIS / CT0320302 / 2982
2003 1,2-Dichloropropane MR 2 SDWIS / CT0320302 / 2983
2003 CHLOROBENZENE MR 2 SDWIS / CT0320302 / 2989
2003 Benzene MR 2 SDWIS / CT0320302 / 2990
2003 Toluene MR 2 SDWIS / CT0320302 / 2991

How COVENTRY GRAMMAR SCHOOL Compares

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

Metric COVENTRY GRAMMAR SCHOOL Connecticut avg Federal benchmark
Total violations 100 88.6 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 1 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 558 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 COVENTRY GRAMMAR SCHOOL water safe to drink? ▼
COVENTRY GRAMMAR SCHOOL (PWS ID: CT0320302) has 100 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 558 people using Groundwater sources.
How many people does COVENTRY GRAMMAR SCHOOL serve? ▼
COVENTRY GRAMMAR SCHOOL serves 558 people in COVENTRY, Connecticut. It is a Local-owned system using Groundwater water sources with 1 service connections.
What type of violations does COVENTRY GRAMMAR SCHOOL have? ▼
COVENTRY GRAMMAR SCHOOL has 100 total violations: 1 health-based violations (MCL exceedances or treatment failures), 98 monitoring/reporting violations, and 1 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in COVENTRY GRAMMAR SCHOOL water? ▼
No PFAS testing data is available for COVENTRY GRAMMAR SCHOOL under the EPA's UCMR5 monitoring program.
What water source does COVENTRY GRAMMAR SCHOOL use? ▼
COVENTRY GRAMMAR 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.

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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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