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HORACE PORTER SCHOOL

PWS ID: CT0300062 · COLUMBIA, Connecticut 06237

HORACE PORTER SCHOOL serves 797 people in COLUMBIA, Connecticut using Groundwater water sources. It has 100 recorded EPA violations, including 3 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: HORACE PORTER SCHOOL

HORACE PORTER SCHOOL is a local-owned non-transient non-community water system that delivers drinking water to 797 residents in COLUMBIA, 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 3 (3%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 97 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 Lead and Copper Rule, recorded in 10 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. HORACE PORTER 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
797
Total Violations
100
Health-Based Violations
3
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Local
Connections
1
County
Tolland
School/Daycare
Yes
MCL Violations
3
Monitoring Violations
97
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Lead and Copper Rule MR 10 2023
Coliform (TCR) MR 7 1999
cis-1,2-Dichloroethylene MR 4 2006
o-Dichlorobenzene MR 4 2006
1,1-Dichloroethylene MR 4 2006
1,2-Dichloroethane MR 4 2006
1,1,1-Trichloroethane MR 4 2006
1,2-Dichloropropane MR 4 2006
Trichloroethylene MR 4 2006
Benzene MR 4 2006
Toluene MR 4 2006
Ethylbenzene MR 4 2006
Styrene MR 4 2006
1,2,4-Trichlorobenzene MR 4 2006
p-Dichlorobenzene MR 4 2006
1,1,2-Trichloroethane MR 4 2006
CHLOROBENZENE MR 4 2006
Tetrachloroethylene MR 4 2006
DICHLOROMETHANE MR 4 2006
Carbon tetrachloride MR 4 2006
Vinyl chloride MR 4 2006
trans-1,2-Dichloroethylene MR 4 2006
Coliform (TCR) MCL 3 1993

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 HORACE PORTER 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 CT0300062 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
2023 Lead and Copper Rule MR 10 SDWIS / CT0300062 / 5000
2006 cis-1,2-Dichloroethylene MR 4 SDWIS / CT0300062 / 2380
2006 o-Dichlorobenzene MR 4 SDWIS / CT0300062 / 2968
2006 1,1-Dichloroethylene MR 4 SDWIS / CT0300062 / 2977
2006 1,2-Dichloroethane MR 4 SDWIS / CT0300062 / 2980
2006 1,1,1-Trichloroethane MR 4 SDWIS / CT0300062 / 2981
2006 1,2-Dichloropropane MR 4 SDWIS / CT0300062 / 2983
2006 Trichloroethylene MR 4 SDWIS / CT0300062 / 2984
2006 Benzene MR 4 SDWIS / CT0300062 / 2990
2006 Toluene MR 4 SDWIS / CT0300062 / 2991
2006 Ethylbenzene MR 4 SDWIS / CT0300062 / 2992
2006 Styrene MR 4 SDWIS / CT0300062 / 2996
2006 1,2,4-Trichlorobenzene MR 4 SDWIS / CT0300062 / 2378
2006 p-Dichlorobenzene MR 4 SDWIS / CT0300062 / 2969
2006 1,1,2-Trichloroethane MR 4 SDWIS / CT0300062 / 2985

How HORACE PORTER SCHOOL Compares

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

Metric HORACE PORTER SCHOOL Connecticut avg Federal benchmark
Total violations 100 88.6 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 3 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 797 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 HORACE PORTER SCHOOL water safe to drink? ▼
HORACE PORTER SCHOOL (PWS ID: CT0300062) has 100 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 797 people using Groundwater sources.
How many people does HORACE PORTER SCHOOL serve? ▼
HORACE PORTER SCHOOL serves 797 people in COLUMBIA, Connecticut. It is a Local-owned system using Groundwater water sources with 1 service connections.
What type of violations does HORACE PORTER SCHOOL have? ▼
HORACE PORTER SCHOOL has 100 total violations: 3 health-based violations (MCL exceedances or treatment failures), 97 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in HORACE PORTER SCHOOL water? ▼
No PFAS testing data is available for HORACE PORTER SCHOOL under the EPA's UCMR5 monitoring program.
What water source does HORACE PORTER SCHOOL use? ▼
HORACE PORTER 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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