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Community Water System · PWS CT1300071

Oakdale Manor Water Association

Southbury, Connecticut 06488 - drinking water served from groundwater sources to 40 people, tracked in EPA SDWIS and UCMR5.

40
People served
856
EPA violations
15
Health-based
Untested
UCMR5 result

The verdict

EPA records 856 drinking-water violations at Oakdale Manor Water Association, 2% of them health-based - above the Connecticut per-system average.

856
Total EPA violations on record
2%
Health-based (MCL / treatment failure)
40
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Oakdale Manor Water Association

Oakdale Manor Water Association is a private-owned community water system that delivers drinking water to 40 residents in Southbury, Connecticut (New Haven County) through 10 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 856 total violations for this system , of which 15 (2%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 782 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Consumer Confidence Rule, recorded in 47 violations (Other). 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%).

Oakdale Manor Water Association's 856 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
40
Total Violations
856
Health-Based Violations
15
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
10
County
New Haven
School/Daycare
No
MCL Violations
4
Monitoring Violations
782
Treatment Tech Violations
11

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Consumer Confidence Rule Other 47 2025
Revised Total Coliform Rule MON 41 2025
Coliform (TCR) MR 31 2016
Lead and Copper Rule MR 17 2022
Tetrachloroethylene MR 16 2016
1,2-Dichloropropane MR 16 2016
Carbon tetrachloride MR 16 2016
1,1-Dichloroethylene MR 16 2016
p-Dichlorobenzene MR 16 2016
o-Dichlorobenzene MR 16 2016
DICHLOROMETHANE MR 16 2016
Vinyl chloride MR 16 2016
trans-1,2-Dichloroethylene MR 16 2016
1,1,1-Trichloroethane MR 16 2016
Trichloroethylene MR 16 2016
1,1,2-Trichloroethane MR 16 2016
CHLOROBENZENE MR 16 2016
Benzene MR 16 2016
Ethylbenzene MR 16 2016
Styrene MR 16 2016
1,2-Dichloroethane MR 16 2016
cis-1,2-Dichloroethylene MR 16 2016
Toluene MR 16 2016
ETHYLENE DIBROMIDE MR 12 2014
1,2,4-Trichlorobenzene MR 12 2016
1,2-DIBROMO-3-CHLOROPROPANE MR 12 2014
Public Notice Other 11 2019
Barium MR 8 2012
CYANIDE MR 8 2012
Fluoride MR 8 2012

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 Oakdale Manor Water Association.

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 CT1300071 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
2025 Consumer Confidence Rule Other 47 SDWIS / CT1300071 / 7000
2025 Revised Total Coliform Rule MON 41 SDWIS / CT1300071 / 8000
2024 LEAD AND COPPER RULE REVISIONS RPT 1 SDWIS / CT1300071 / 5200
2024 LEAD AND COPPER RULE REVISIONS TT 1 SDWIS / CT1300071 / 5200
2022 Lead and Copper Rule MR 17 SDWIS / CT1300071 / 5000
2019 Public Notice Other 11 SDWIS / CT1300071 / 7500
2018 Groundwater Rule TT 6 SDWIS / CT1300071 / 0700
2016 Coliform (TCR) MR 31 SDWIS / CT1300071 / 3100
2016 Tetrachloroethylene MR 16 SDWIS / CT1300071 / 2987
2016 1,2-Dichloropropane MR 16 SDWIS / CT1300071 / 2983
2016 Carbon tetrachloride MR 16 SDWIS / CT1300071 / 2982
2016 1,1-Dichloroethylene MR 16 SDWIS / CT1300071 / 2977
2016 p-Dichlorobenzene MR 16 SDWIS / CT1300071 / 2969
2016 o-Dichlorobenzene MR 16 SDWIS / CT1300071 / 2968
2016 DICHLOROMETHANE MR 16 SDWIS / CT1300071 / 2964

How Oakdale Manor Water Association Compares

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

Metric Oakdale Manor Water Association Connecticut avg Federal benchmark
Total violations 856 88.6 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 15 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 40 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 Oakdale Manor Water Association water safe to drink? ▼
Oakdale Manor Water Association (PWS ID: CT1300071) has 856 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 40 people using Groundwater sources.
How many people does Oakdale Manor Water Association serve? ▼
Oakdale Manor Water Association serves 40 people in Southbury, Connecticut. It is a Private-owned system using Groundwater water sources with 10 service connections.
What type of violations does Oakdale Manor Water Association have? ▼
Oakdale Manor Water Association has 856 total violations: 15 health-based violations (MCL exceedances or treatment failures), 782 monitoring/reporting violations, and 11 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Oakdale Manor Water Association water? ▼
No PFAS testing data is available for Oakdale Manor Water Association under the EPA's UCMR5 monitoring program.
What water source does Oakdale Manor Water Association use? ▼
Oakdale Manor Water Association 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.