CITY REPORT OK HEALTH VIOLATIONS: 11

Chester, OK: 29 Violations - 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 3
County Radon Potential (Low)
$177K
Median Home Value
$600
Est. Remediation (0.3% of home value)

What You Should Know About Chester Water

  • Your city's water systems recorded 29 violations since 2021.
  • Average of reported 90th-percentile lead results: 0.0059 mg/L.
  • Homes built before 1986: 62% - older plumbing may contain lead solder.
  • Estimated remediation: $600 per household.
  • Health risk index (ZipCheckup composite of CDC data): 15.13.

Who Supplies Your Water in Chester

Only a single entry appears in the water system list for Chester, OK; federal records tie 1 to the area.

Overview

We track home safety data for 1 ZIP code in Chester, Oklahoma (population ~634), covering 1 community water system serving approximately 1,000 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. 11 health-based violations appear in the available health breakdown.

Water Sources

Chester water systems draw from: Groundwater.

Lead & Copper

  • Average of reported 90th-percentile lead results: 0.0059 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 3.

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
Nitrate-Nitrite Inorganic 22 1
Chlorine Disinfectant 14 1
Revised Total Coliform Rule Microbiological 8 1
Haloacetic Acids (HAA5) Disinfection Byproducts 4 1
Total Trihalomethanes (TTHM) Disinfection Byproducts 4 1

Areas with Most Violations

ZIP Code Safety Score Violations Health-Based System
73838 — 29 11 Major County Rwd #1

All ZIP Codes in Chester

  • 73838 - 29 violations ⚠

Data Sources

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

Health Outcomes in Chester

11%
Asthma (US: 9.8%)
13.3%
Diabetes (US: 10.4%)
16.9%
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 11% ↑
Diabetes 13.3% ↑
Mental Health 16.9% ↑

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

Top Contaminants in Chester Water

Nitrate-Nitrite 22 violations
Inorganic · EPA regulatory level for the contaminant named above: 10 mg/L
Chlorine 14 violations
Disinfectant · EPA regulatory level for the contaminant named above: 4 mg/L
Revised Total Coliform Rule 8 violations
Microbiological
Indicates possible bacterial contamination

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

Housing & Infrastructure in Chester

1973
Median Build Year
62%
Built Before 1986
42%
Built Before 1970
Copper
Likely Pipe Material

With 62% 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

If you live in one of the pre-1986 homes in Chester, a certified lab test for lead is the direct way to learn what your tap delivers; the median build year of 1973 is only context.

1973
Median Year Built
62%
Pre-1986 (lead solder era; lead paint banned 1978)
42%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (42%) 1970–1986 (20%) Post-1986 (38%)

Over half of homes in Chester 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 Chester Homeowners

How large is the remediation estimate next to home prices in Chester? Small in relative terms: it amounts to 1% of the median value or less, although the dollar figure below is still an estimate and actual costs vary by property and contractor.

Median Home Value
$176,600
Est. Remediation
$600
Remediation as % of home value 0.3%

Estimated remediation costs in Chester can be compared with local home values. The $300–$1,500 estimated range can be set against the median property value; actual costs vary by home. Home values are 22% above the Oklahoma average.

Lead Exposure Risk for Children in Chester

62%
Homes Built Before 1986
0.0059
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 Chester?
EPA records list 29 EPA violations, including 11 health-based violations for Chester water systems. These water-system violations are shown for 1 mapped ZIP code.
Does Chester water have lead?
The average of the reported 90th-percentile lead results across the ZIP codes of Chester is 0.0059 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 Chester?
Our records map 1 water system to 1 ZIP code in Chester. The related population figure in our data is approximately 634 people; it is not a count of people served citywide.
How much does it cost to fix water issues in Chester?
Estimated remediation cost per household in Chester: $600; modeled range $300 to $1,500. Estimated costs may include filtration, pipe replacement, radon mitigation, or flood protection where applicable.
Home → Cities → Oklahoma → Chester, OK

How to cite this page

APA ZipCheckup. (2026). Chester, OK: 29 Violations - Home Safety Score unavailable. https://zipcheckup.com/cities/ok/chester/
BibTeX
@misc{zipcheckup-cities-ok-chester,
  author = {{ZipCheckup}},
  title  = {{Chester, OK: 29 Violations - Home Safety Score unavailable}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/ok/chester/}
}

Page version: October 2026.

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