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Community Water System · PWS AR0000061

Diamond City Water

Diamond City, Arkansas 72630 - drinking water served from surface water sources to 1,290 people, tracked in EPA SDWIS and UCMR5.

1,290
People served
114
EPA violations
61
Health-based
Untested
UCMR5 result

The verdict

EPA records 114 drinking-water violations at Diamond City Water, 54% of them health-based - above the Arkansas per-system average.

114
Total EPA violations on record
54%
Health-based (MCL / treatment failure)
1,290
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Diamond City Water

Diamond City Water is a local-owned community water system that delivers drinking water to 1,290 residents in Diamond City, Arkansas (Boone County) through 516 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 114 total violations for this system , of which 61 (54%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 32 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 Stage 1 Disinfectants and Disinfection Byproducts Rule, recorded in 59 violations (TT, 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 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%).

Diamond City Water's 114 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
1,290
Total Violations
114
Health-Based Violations
61
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
516
County
Boone
School/Daycare
No
MCL Violations
2
Monitoring Violations
32
Treatment Tech Violations
59

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Stage 1 Disinfectants and Disinfection Byproducts Rule TT 59 2020
Revised Total Coliform Rule MON 20 2019
Coliform (TCR) MR 9 2013
Revised Total Coliform Rule RPT 9 2021
Public Notice Other 8 2020
Consumer Confidence Rule Other 3 2010
Chlorine MR 2 2004
Coliform (TCR) MCL 2 2011
Lead and Copper Rule MR 1 2016
Coliform (TCR) Other 1 1994

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 Diamond City Water.

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 AR0000061 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 RPT 9 SDWIS / AR0000061 / 8000
2020 Stage 1 Disinfectants and Disinfection Byproducts Rule TT 59 SDWIS / AR0000061 / 0400
2020 Public Notice Other 8 SDWIS / AR0000061 / 7500
2019 Revised Total Coliform Rule MON 20 SDWIS / AR0000061 / 8000
2016 Lead and Copper Rule MR 1 SDWIS / AR0000061 / 5000
2013 Coliform (TCR) MR 9 SDWIS / AR0000061 / 3100
2011 Coliform (TCR) MCL 2 SDWIS / AR0000061 / 3100
2010 Consumer Confidence Rule Other 3 SDWIS / AR0000061 / 7000
2004 Chlorine MR 2 SDWIS / AR0000061 / 0999
1994 Coliform (TCR) Other 1 SDWIS / AR0000061 / 3100

How Diamond City Water Compares

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

Metric Diamond City Water Arkansas avg Federal benchmark
Total violations 114 52.6 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 61 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 1,290 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 Diamond City Water water safe to drink? ▼
Diamond City Water (PWS ID: AR0000061) has 114 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 1,290 people using Surface Water sources.
How many people does Diamond City Water serve? ▼
Diamond City Water serves 1,290 people in Diamond City, Arkansas. It is a Local-owned system using Surface Water water sources with 516 service connections.
What type of violations does Diamond City Water have? ▼
Diamond City Water has 114 total violations: 61 health-based violations (MCL exceedances or treatment failures), 32 monitoring/reporting violations, and 59 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Diamond City Water water? ▼
No PFAS testing data is available for Diamond City Water under the EPA's UCMR5 monitoring program.
What water source does Diamond City Water use? ▼
Diamond City Water 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.