PlainWater
States → Connecticut

Non-Transient Non-Community Water System · PWS CT0240233

Chaplin Elementary School

Chaplin, Connecticut 06235 - drinking water served from groundwater sources to 280 people, tracked in EPA SDWIS and UCMR5.

280
People served
88
EPA violations
9
Health-based
Untested
UCMR5 result

The verdict

EPA records 88 drinking-water violations at Chaplin Elementary School, 10% of them health-based - below the Connecticut per-system average.

88
Total EPA violations on record
10%
Health-based (MCL / treatment failure)
280
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Chaplin Elementary School

Chaplin Elementary School is a local-owned non-transient non-community water system that delivers drinking water to 280 residents in Chaplin, Connecticut (Windham County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 88 total violations for this system , of which 9 (10%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 70 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 E. COLI, recorded in 11 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. Statewide, 40 of 63 UCMR5-tested systems have reported PFAS detections (63.5%).

Chaplin Elementary School's 88 violations sit below 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
280
Total Violations
88
Health-Based Violations
9
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Local
Connections
1
County
Windham
School/Daycare
Yes
MCL Violations
8
Monitoring Violations
70
Treatment Tech Violations
1

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
E. COLI MR 11 2016
Revised Total Coliform Rule MON 6 2018
Coliform (TCR) MCL 4 2015
Asbestos MR 4 2011
Arsenic MR 4 2017
Cadmium MR 4 2017
Chromium MR 4 2017
CYANIDE MR 4 2017
Fluoride MR 4 2017
Antimony, Total MR 4 2017
Thallium, Total MR 4 2017
Selenium MR 4 2017
Mercury MR 4 2017
Revised Total Coliform Rule MCL 4 2016
Nickel MR 4 2017
Beryllium, Total MR 4 2017
Barium MR 4 2017
LEAD AND COPPER RULE REVISIONS TT 1 2024
Lead and Copper Rule MR 1 2018
LEAD AND COPPER RULE REVISIONS RPT 1 2024

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 Chaplin 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 CT0240233 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 / CT0240233 / 5200
2024 LEAD AND COPPER RULE REVISIONS RPT 1 SDWIS / CT0240233 / 5200
2018 Revised Total Coliform Rule MON 6 SDWIS / CT0240233 / 8000
2018 Lead and Copper Rule MR 1 SDWIS / CT0240233 / 5000
2017 Arsenic MR 4 SDWIS / CT0240233 / 1005
2017 Cadmium MR 4 SDWIS / CT0240233 / 1015
2017 Chromium MR 4 SDWIS / CT0240233 / 1020
2017 CYANIDE MR 4 SDWIS / CT0240233 / 1024
2017 Fluoride MR 4 SDWIS / CT0240233 / 1025
2017 Antimony, Total MR 4 SDWIS / CT0240233 / 1074
2017 Thallium, Total MR 4 SDWIS / CT0240233 / 1085
2017 Selenium MR 4 SDWIS / CT0240233 / 1045
2017 Mercury MR 4 SDWIS / CT0240233 / 1035
2017 Nickel MR 4 SDWIS / CT0240233 / 1036
2017 Beryllium, Total MR 4 SDWIS / CT0240233 / 1075

How Chaplin Elementary School Compares

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

Metric Chaplin Elementary School Connecticut avg Federal benchmark
Total violations 88 88.6 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 9 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 280 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 Chaplin Elementary School water safe to drink? ▼
Chaplin Elementary School (PWS ID: CT0240233) has 88 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 280 people using Groundwater sources.
How many people does Chaplin Elementary School serve? ▼
Chaplin Elementary School serves 280 people in Chaplin, Connecticut. It is a Local-owned system using Groundwater water sources with 1 service connections.
What type of violations does Chaplin Elementary School have? ▼
Chaplin Elementary School has 88 total violations: 9 health-based violations (MCL exceedances or treatment failures), 70 monitoring/reporting violations, and 1 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Chaplin Elementary School water? ▼
No PFAS testing data is available for Chaplin Elementary School under the EPA's UCMR5 monitoring program.
What water source does Chaplin Elementary School use? ▼
Chaplin 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.