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GREAT OAK PROPERTIES

PWS ID: NY1322771 · VALHALLA, New York 10595

GREAT OAK PROPERTIES serves 90 people in VALHALLA, New York using Groundwater water sources. It has 52 recorded EPA violations, including 0 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: GREAT OAK PROPERTIES

GREAT OAK PROPERTIES is a private-owned community water system that delivers drinking water to 90 residents in VALHALLA, New York (Dutchess County) through 36 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 52 total violations for this system , of which 0 (0%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 40 monitoring and reporting violations are on file. The most recent violation on record dates to 2005.

The most frequently cited contaminant at this system is Vinyl chloride, recorded in 2 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 New York, EPA tracks 8,098 public water systems serving 19,294,951 people, with 552,003 cumulative violations and 26,817 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 68.2 violations. GREAT OAK PROPERTIES's 52 violations sit below the New York average. Statewide, 129 of 332 UCMR5-tested systems have reported PFAS detections (38.9%). 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
90
Total Violations
52
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
36
County
Dutchess
School/Daycare
No
MCL Violations
0
Monitoring Violations
40
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Vinyl chloride MR 2 2000
p-Dichlorobenzene MR 2 2000
cis-1,2-Dichloroethylene MR 2 2000
CHLOROBENZENE MR 2 2000
1,1,2-Trichloroethane MR 2 2000
Trichloroethylene MR 2 2000
1,2-Dichloropropane MR 2 2000
Styrene MR 2 2000
Ethylbenzene MR 2 2000
Toluene MR 2 2000
1,1,1-Trichloroethane MR 2 2000
1,2-Dichloroethane MR 2 2000
trans-1,2-Dichloroethylene MR 2 2000
Benzene MR 2 2000
Carbon tetrachloride MR 2 2000
1,2,4-Trichlorobenzene MR 2 2000
Tetrachloroethylene MR 2 2000
Consumer Confidence Rule Other 2 2005
o-Dichlorobenzene MR 2 2000
DICHLOROMETHANE MR 2 2000
1,1-Dichloroethylene MR 2 2000

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 GREAT OAK PROPERTIES.

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 NY1322771 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

New York Drinking Water Authority

New York State Department of Health — Public Water Systems is the primacy agency that licenses and inspects GREAT OAK PROPERTIES under EPA-delegated authority.

Open NY regulator portal

Source: New York State Department of Health — Public Water Systems

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
2005 Consumer Confidence Rule Other 2 SDWIS / NY1322771 / 7000
2000 Vinyl chloride MR 2 SDWIS / NY1322771 / 2976
2000 p-Dichlorobenzene MR 2 SDWIS / NY1322771 / 2969
2000 cis-1,2-Dichloroethylene MR 2 SDWIS / NY1322771 / 2380
2000 CHLOROBENZENE MR 2 SDWIS / NY1322771 / 2989
2000 1,1,2-Trichloroethane MR 2 SDWIS / NY1322771 / 2985
2000 Trichloroethylene MR 2 SDWIS / NY1322771 / 2984
2000 1,2-Dichloropropane MR 2 SDWIS / NY1322771 / 2983
2000 Styrene MR 2 SDWIS / NY1322771 / 2996
2000 Ethylbenzene MR 2 SDWIS / NY1322771 / 2992
2000 Toluene MR 2 SDWIS / NY1322771 / 2991
2000 1,1,1-Trichloroethane MR 2 SDWIS / NY1322771 / 2981
2000 1,2-Dichloroethane MR 2 SDWIS / NY1322771 / 2980
2000 trans-1,2-Dichloroethylene MR 2 SDWIS / NY1322771 / 2979
2000 Benzene MR 2 SDWIS / NY1322771 / 2990

How GREAT OAK PROPERTIES Compares

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

Metric GREAT OAK PROPERTIES New York avg Federal benchmark
Total violations 52 68.2 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 0 3.3 Indicates a contaminant exceeded a federal MCL
PFAS detection None 38.9% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 90 2,383 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 8,098 regulated public water systems in New York.

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 GREAT OAK PROPERTIES water safe to drink? ▼
GREAT OAK PROPERTIES (PWS ID: NY1322771) has 52 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 90 people using Groundwater sources.
How many people does GREAT OAK PROPERTIES serve? ▼
GREAT OAK PROPERTIES serves 90 people in VALHALLA, New York. It is a Private-owned system using Groundwater water sources with 36 service connections.
What type of violations does GREAT OAK PROPERTIES have? ▼
GREAT OAK PROPERTIES has 52 total violations: 0 health-based violations (MCL exceedances or treatment failures), 40 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in GREAT OAK PROPERTIES water? ▼
No PFAS testing data is available for GREAT OAK PROPERTIES under the EPA's UCMR5 monitoring program.
What water source does GREAT OAK PROPERTIES use? ▼
GREAT OAK PROPERTIES 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.

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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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