CITY REPORT AR

Onia, AR: 1 Violation - Home Safety Score unavailable

1 ZIP code · 1 water system · Updated

Data: EPA SDWIS

1
ZIP Codes
1
Water Systems
1
ZIPs Linked to Systems with Violations
Zone 2
County Radon Potential (Moderate)
$177K
Median Home Value
$500
Est. Remediation (0.3% of home value)

What You Should Know About Onia Water

  • Water systems mapped to your city have 1 violation on record since 2021.
  • Average of reported 90th-percentile lead results: 0.001 mg/L.
  • Homes built before 1986: 63% - older plumbing may contain lead solder.
  • Estimated remediation: $500 per household.
  • Health risk index (ZipCheckup composite of CDC data): 17.67.

Who Supplies Your Water in Onia

One water system is listed below for Onia, AR; federal data link 1 to the area overall.

Overview

We track home safety data for 1 ZIP code in Onia, Arkansas (population ~463), covering 1 community water system serving approximately 5,188 people region-wide. The EPA snapshots used for this build directly map water systems to 1 of 1 ZIP codes.

1 of 1 ZIP code with a reported violation count in the available EPA record (100%) have recorded EPA violations. The available record reports no health-based violations for this measured scope.

Water Sources

Onia water systems draw from: Surface water.

Lead & Copper

  • Average of reported 90th-percentile lead results: 0.0010 mg/L (EPA action level: 0.015 mg/L)
  • 0 of 1 ZIP code with known status exceed the EPA lead action level

Radon Risk

1 of 1 ZIP records with known zones is in EPA Radon Zone 2.

The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.

Top Contaminants

Contaminant Category Violations ZIPs Affected
Revised Total Coliform Rule Microbiological 2 1

Areas with Most Violations

ZIP Code Safety Score Violations Health-Based System
72663 — 1 0 West Stone County Water Assn

All ZIP Codes in Onia

  • 72663 - 1 violation recorded for mapped water systems

Data Sources

Reporting periods vary by source. Missing data is shown as unavailable, not as zero.

Health Outcomes in Onia

10.5%
Asthma (US: 9.8%)
17%
Diabetes (US: 10.4%)
18.3%
Poor Mental Health (US: 14.8%)

Source: CDC PLACES (County-level estimates). County health indicators are shown for context only and are not linked to this area's water records.

Compared to National Average

Asthma 10.5% ↑
Diabetes 17% ↑
Mental Health 18.3% ↑

Vertical line = national average. ■ Above national · ■ Below national

Top Contaminants in Onia Water

Revised Total Coliform Rule 2 violations
Microbiological
Indicates possible bacterial contamination

Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.

Housing & Infrastructure in Onia

1970
Median Build Year
63%
Built Before 1986
0%
Built Before 1970
Copper
Likely Pipe Material

With 63% of homes built before 1986, lead solder in plumbing is a potential concern. Federal law banned lead solder in drinking-water plumbing in 1986, but many older homes retain original plumbing.

Source: U.S. Census Bureau American Community Survey (ACS).

Housing Age Profile

Pre-1986 homes make up a large part of Onia's housing; median build year 1970.

1970
Median Year Built
63%
Pre-1986 (lead solder era; lead paint banned 1978)
0%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (0%) 1970–1986 (63%) Post-1986 (37%)

Over half of homes in Onia were built before 1986, when federal law began restricting lead solder in drinking-water plumbing. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.

Source: U.S. Census Bureau ACS B25034.

Cost Context: What Remediation Means for Onia Homeowners

Relative to home values, Onia remediation estimates run low.

Median Home Value
$176,700
Est. Remediation
$500
Remediation as % of home value 0.3%

Estimated remediation costs in Onia can be compared with local home values. The $300–$800 estimated range can be set against the median property value; actual costs vary by home. Home values are 32% above the Arkansas average.

Lead Exposure Risk for Children in Onia

63%
Homes Built Before 1986
0.001
mg/L average of reported water-system 90th-percentile lead results (the 0.015 action level applies to each system's result, not to this average)

Why children are most at risk: The CDC states that no safe blood lead level in children has been identified. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.

If you have young children or are pregnant, consider testing your home's water - especially if your home was built before 1986.

Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.

Frequently Asked Questions

How many violations are on record for water systems serving Onia?
EPA records list 1 EPA violation for Onia water systems. These water-system violations are shown for 1 mapped ZIP code.
Does Onia water have lead?
The average of the reported 90th-percentile lead results across the ZIP codes of Onia is 0.001 mg/L. The EPA action level of 0.015 mg/L applies to each water system's own 90th percentile, not to this average. EPA's health goal for lead is zero. Lead levels can vary by home - testing is recommended especially in older properties.
How many water systems serve Onia?
Our records map 1 water system to 1 ZIP code in Onia. The related population figure in our data is approximately 463 people; it is not a count of people served citywide.
How much does it cost to fix water issues in Onia?
Estimated remediation cost per household in Onia: $500; modeled range $300 to $800. Estimated costs may include filtration, pipe replacement, radon mitigation, or flood protection where applicable.
Home → Cities → Arkansas → Onia, AR

How to cite this page

APA ZipCheckup. (2026). Onia, AR: 1 Violation - Home Safety Score unavailable. https://zipcheckup.com/cities/ar/onia/
BibTeX
@misc{zipcheckup-cities-ar-onia,
  author = {{ZipCheckup}},
  title  = {{Onia, AR: 1 Violation - Home Safety Score unavailable}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/ar/onia/}
}

Page version: October 2026.

Get safety alerts for Onia, Arkansas

Free updates when EPA data changes for this area. No spam.

Unsubscribe anytime. Privacy Policy.

Share This Page

X Facebook
Violations found - check filter options Free tool - no phone call required.