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Community Water System · PWS NY5918395

Oakridge Water District

Lagrangeville, New York 12540 - drinking water served from groundwater sources to 892 people, tracked in EPA SDWIS and UCMR5.

892
People served
102
EPA violations
18
Health-based
Untested
UCMR5 result

The verdict

EPA records 102 drinking-water violations at Oakridge Water District, 18% of them health-based - above the New York per-system average.

102
Total EPA violations on record
18%
Health-based (MCL / treatment failure)
892
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Oakridge Water District

Oakridge Water District is a local-owned community water system that delivers drinking water to 892 residents in Lagrangeville, New York (Westchester County) through 58 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 102 total violations for this system , of which 18 (18%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 18 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 TTHM, recorded in 12 violations (MCL, health-based). 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. Statewide, 129 of 332 UCMR5-tested systems have reported PFAS detections (38.9%).

Oakridge Water District's 102 violations sit above the New York 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
892
Total Violations
102
Health-Based Violations
18
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
58
County
Westchester
School/Daycare
No
MCL Violations
12
Monitoring Violations
18
Treatment Tech Violations
6

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
TTHM MCL 12 2017
Lead and Copper Rule MR 10 2011
Consumer Confidence Rule Other 4 2009
Groundwater Rule TT 4 2012
Public Notice Other 4 2017
Revised Total Coliform Rule MON 4 2016
Total Haloacetic Acids (HAA5) MR 2 2024
Lead and Copper Rule TT 2 2025
TTHM MR 2 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 Oakridge Water District.

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 NY5918395 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 Oakridge Water District 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
2025 Lead and Copper Rule TT 2 SDWIS / NY5918395 / 5000
2024 Total Haloacetic Acids (HAA5) MR 2 SDWIS / NY5918395 / 2456
2024 TTHM MR 2 SDWIS / NY5918395 / 2950
2017 TTHM MCL 12 SDWIS / NY5918395 / 2950
2017 Public Notice Other 4 SDWIS / NY5918395 / 7500
2016 Revised Total Coliform Rule MON 4 SDWIS / NY5918395 / 8000
2012 Groundwater Rule TT 4 SDWIS / NY5918395 / 0700
2011 Lead and Copper Rule MR 10 SDWIS / NY5918395 / 5000
2009 Consumer Confidence Rule Other 4 SDWIS / NY5918395 / 7000

How Oakridge Water District Compares

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

Metric Oakridge Water District New York avg Federal benchmark
Total violations 102 68.2 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 18 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 892 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 (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 Oakridge Water District water safe to drink? ▼
Oakridge Water District (PWS ID: NY5918395) has 102 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 892 people using Groundwater sources.
How many people does Oakridge Water District serve? ▼
Oakridge Water District serves 892 people in Lagrangeville, New York. It is a Local-owned system using Groundwater water sources with 58 service connections.
What type of violations does Oakridge Water District have? ▼
Oakridge Water District has 102 total violations: 18 health-based violations (MCL exceedances or treatment failures), 18 monitoring/reporting violations, and 6 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Oakridge Water District water? ▼
No PFAS testing data is available for Oakridge Water District under the EPA's UCMR5 monitoring program.
What water source does Oakridge Water District use? ▼
Oakridge Water District 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.