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Community Water System · PWS AR0000146

Oak Grove Water Association

Van Buren, Arkansas 72956 - drinking water served from surface water sources to 2,963 people, tracked in EPA SDWIS and UCMR5.

2,963
People served
18
EPA violations
3
Health-based
Untested
UCMR5 result

The verdict

EPA records 18 drinking-water violations at Oak Grove Water Association, 17% of them health-based - below the Arkansas per-system average.

18
Total EPA violations on record
17%
Health-based (MCL / treatment failure)
2,963
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Oak Grove Water Association

Oak Grove Water Association is a local-owned community water system that delivers drinking water to 2,963 residents in Van Buren, Arkansas (Crawford County) through 1,172 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 18 total violations for this system , of which 3 (17%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 10 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 Revised Total Coliform Rule, recorded in 5 violations (MON). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Arkansas, EPA tracks 1,016 public water systems serving 3,049,400 people, with 53,437 cumulative violations and 21,598 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 52.6 violations. Statewide, 57 of 172 UCMR5-tested systems have reported PFAS detections (33.1%).

Oak Grove Water Association's 18 violations sit below the Arkansas 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
2,963
Total Violations
18
Health-Based Violations
3
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
1,172
County
Crawford
School/Daycare
No
MCL Violations
3
Monitoring Violations
10
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Revised Total Coliform Rule MON 5 2025
Consumer Confidence Rule Other 4 2012
Coliform (TCR) MR 4 2009
Coliform (TCR) MCL 3 2013
Surface Water Treatment Rule MR 1 1995
Revised Total Coliform Rule RPT 1 2022

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 Oak Grove 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 AR0000146 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Arkansas Drinking Water Authority

Arkansas'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 AR 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 Revised Total Coliform Rule MON 5 SDWIS / AR0000146 / 8000
2022 Revised Total Coliform Rule RPT 1 SDWIS / AR0000146 / 8000
2013 Coliform (TCR) MCL 3 SDWIS / AR0000146 / 3100
2012 Consumer Confidence Rule Other 4 SDWIS / AR0000146 / 7000
2009 Coliform (TCR) MR 4 SDWIS / AR0000146 / 3100
1995 Surface Water Treatment Rule MR 1 SDWIS / AR0000146 / 0200

How Oak Grove Water Association Compares

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

Metric Oak Grove Water Association Arkansas avg Federal benchmark
Total violations 18 52.6 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 3 21.3 Indicates a contaminant exceeded a federal MCL
PFAS detection None 33.1% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 2,963 3,001 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 1,016 regulated public water systems in Arkansas.

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 Oak Grove Water Association water safe to drink? ▼
Oak Grove Water Association (PWS ID: AR0000146) has 18 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 2,963 people using Surface Water sources.
How many people does Oak Grove Water Association serve? ▼
Oak Grove Water Association serves 2,963 people in Van Buren, Arkansas. It is a Local-owned system using Surface Water water sources with 1,172 service connections.
What type of violations does Oak Grove Water Association have? ▼
Oak Grove Water Association has 18 total violations: 3 health-based violations (MCL exceedances or treatment failures), 10 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Oak Grove Water Association water? ▼
No PFAS testing data is available for Oak Grove Water Association under the EPA's UCMR5 monitoring program.
What water source does Oak Grove Water Association use? ▼
Oak Grove Water Association uses Surface Water 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.