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Community Water System · PWS AR0000321

Wilton Waterworks

Wilton, Arkansas 71865 - drinking water served from groundwater sources to 354 people, tracked in EPA SDWIS and UCMR5.

354
People served
71
EPA violations
9
Health-based
Untested
UCMR5 result

The verdict

EPA records 71 drinking-water violations at Wilton Waterworks, 13% of them health-based - above the Arkansas per-system average.

71
Total EPA violations on record
13%
Health-based (MCL / treatment failure)
354
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Wilton Waterworks

Wilton Waterworks is a local-owned community water system that delivers drinking water to 354 residents in Wilton, Arkansas (Little River County) through 145 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 71 total violations for this system , of which 9 (13%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 35 monitoring and reporting violations are on file. The most recent violation on record dates to 2022.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 22 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 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%).

Wilton Waterworks's 71 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
354
Total Violations
71
Health-Based Violations
9
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
145
County
Little River
School/Daycare
No
MCL Violations
9
Monitoring Violations
35
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 22 2014
Coliform (TCR) MCL 9 2014
Consumer Confidence Rule Other 6 2020
E. COLI MR 4 2014
Revised Total Coliform Rule MON 4 2020
Chlorine MR 3 2014
Public Notice Other 2 2019
Lead and Copper Rule MR 2 2022
Coliform (Pre-TCR) Other 2 1990

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 Wilton Waterworks.

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 AR0000321 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
2022 Lead and Copper Rule MR 2 SDWIS / AR0000321 / 5000
2020 Consumer Confidence Rule Other 6 SDWIS / AR0000321 / 7000
2020 Revised Total Coliform Rule MON 4 SDWIS / AR0000321 / 8000
2019 Public Notice Other 2 SDWIS / AR0000321 / 7500
2014 Coliform (TCR) MR 22 SDWIS / AR0000321 / 3100
2014 Coliform (TCR) MCL 9 SDWIS / AR0000321 / 3100
2014 E. COLI MR 4 SDWIS / AR0000321 / 3014
2014 Chlorine MR 3 SDWIS / AR0000321 / 0999
1990 Coliform (Pre-TCR) Other 2 SDWIS / AR0000321 / 3000

How Wilton Waterworks Compares

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

Metric Wilton Waterworks Arkansas avg Federal benchmark
Total violations 71 52.6 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 9 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 354 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 Wilton Waterworks water safe to drink? ▼
Wilton Waterworks (PWS ID: AR0000321) has 71 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 354 people using Groundwater sources.
How many people does Wilton Waterworks serve? ▼
Wilton Waterworks serves 354 people in Wilton, Arkansas. It is a Local-owned system using Groundwater water sources with 145 service connections.
What type of violations does Wilton Waterworks have? ▼
Wilton Waterworks has 71 total violations: 9 health-based violations (MCL exceedances or treatment failures), 35 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Wilton Waterworks water? ▼
No PFAS testing data is available for Wilton Waterworks under the EPA's UCMR5 monitoring program.
What water source does Wilton Waterworks use? ▼
Wilton Waterworks 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.