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Community Water System · PWS AR0000813

Cottonwood Water Association

Harrison, Arkansas 72601 - drinking water served from surface water sources to 820 people, tracked in EPA SDWIS and UCMR5.

820
People served
63
EPA violations
8
Health-based
Untested
UCMR5 result

The verdict

EPA records 63 drinking-water violations at Cottonwood Water Association, 13% of them health-based - above the Arkansas per-system average.

63
Total EPA violations on record
13%
Health-based (MCL / treatment failure)
820
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Cottonwood Water Association

Cottonwood Water Association is a local-owned community water system that delivers drinking water to 820 residents in Harrison, Arkansas (Boone County) through 328 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 63 total violations for this system , of which 8 (13%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 25 monitoring and reporting violations are on file. The most recent violation on record dates to 2021.

The most frequently cited contaminant at this system is Revised Total Coliform Rule, recorded in 13 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 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%).

Cottonwood Water Association's 63 violations sit above 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
820
Total Violations
63
Health-Based Violations
8
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
328
County
Boone
School/Daycare
No
MCL Violations
4
Monitoring Violations
25
Treatment Tech Violations
4

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Revised Total Coliform Rule Other 13 2016
Coliform (TCR) MR 11 2015
Revised Total Coliform Rule MON 8 2021
Revised Total Coliform Rule RPT 7 2017
Consumer Confidence Rule Other 5 2018
Lead and Copper Rule TT 4 2018
Coliform (TCR) MCL 4 2009
Public Notice Other 4 2018
Surface Water Treatment Rule MR 3 2000
Chlorine MR 2 2019
Surface Water Treatment Rule Other 1 1993
Lead and Copper Rule MR 1 2014

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 Cottonwood 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 AR0000813 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
2021 Revised Total Coliform Rule MON 8 SDWIS / AR0000813 / 8000
2019 Chlorine MR 2 SDWIS / AR0000813 / 0999
2018 Consumer Confidence Rule Other 5 SDWIS / AR0000813 / 7000
2018 Lead and Copper Rule TT 4 SDWIS / AR0000813 / 5000
2018 Public Notice Other 4 SDWIS / AR0000813 / 7500
2017 Revised Total Coliform Rule RPT 7 SDWIS / AR0000813 / 8000
2016 Revised Total Coliform Rule Other 13 SDWIS / AR0000813 / 8000
2015 Coliform (TCR) MR 11 SDWIS / AR0000813 / 3100
2014 Lead and Copper Rule MR 1 SDWIS / AR0000813 / 5000
2009 Coliform (TCR) MCL 4 SDWIS / AR0000813 / 3100
2000 Surface Water Treatment Rule MR 3 SDWIS / AR0000813 / 0200
1993 Surface Water Treatment Rule Other 1 SDWIS / AR0000813 / 0200

How Cottonwood Water Association Compares

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

Metric Cottonwood Water Association Arkansas avg Federal benchmark
Total violations 63 52.6 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 8 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 820 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 Cottonwood Water Association water safe to drink? ▼
Cottonwood Water Association (PWS ID: AR0000813) has 63 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 820 people using Surface Water sources.
How many people does Cottonwood Water Association serve? ▼
Cottonwood Water Association serves 820 people in Harrison, Arkansas. It is a Local-owned system using Surface Water water sources with 328 service connections.
What type of violations does Cottonwood Water Association have? ▼
Cottonwood Water Association has 63 total violations: 8 health-based violations (MCL exceedances or treatment failures), 25 monitoring/reporting violations, and 4 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Cottonwood Water Association water? ▼
No PFAS testing data is available for Cottonwood Water Association under the EPA's UCMR5 monitoring program.
What water source does Cottonwood Water Association use? ▼
Cottonwood 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.