Current Noncompliance OK

Choctaw Ua

EPA ID: OK2005510 ยท 3,926 people served ยท 4 ZIP codes

ZipCheckup's reading of EPA SDWIS for Choctaw Ua (OK2005510): 2 unresolved EPA violations on record. Unlike fully compliant utilities, Choctaw Ua has 2 outstanding EPA violations for approximately 3,926 residents.

Data: EPA SDWIS

B ยท 75
Avg Safety Score
3,926
People Served
4
ZIP Codes Served
81
Violations (5yr)
Groundwater
Water Source
0.0114 mg/L
Max Lead Level
Zone 3
Radon Risk ยท Low
32
Contaminants Flagged
$224K
Median Home Value in Service Area

Service Area Map

Coverage area for Choctaw Ua Source: EPA SDWIS service area boundaries.

Service area boundary - Grade B

Service Area Demographics

$80,465
Median Household Income
50,312
Service Area Population
46%
Disadvantaged Population
50th
Poverty Percentile
40th
Energy Burden Percentile
50%
Pre-1986 Housing

The Choctaw Ua serves a community with a median household income of $80,465 and an estimated 50,312 residents across its service area. Approximately 50% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.

Environmental Justice Note: 46% of the population in this service area is classified as disadvantaged under EPA's EJScreen criteria. Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.

๐Ÿ’ง Where Does Your Water Come From?

Groundwater

Choctaw Ua's water is pumped from underground aquifers. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table.

Elevated Risk
Source Contamination Risk
20th
Wastewater Discharge Proximity
50th
Superfund Site Proximity

Infrastructure Risk

38 yr
Avg Pipe Age
Copper
Pipe Material
32 yr
Est. Remaining Life
Moderate Wear
Decay Status
Installed 54% of expected lifespan used End of life

Detected Contaminants

How Choctaw Ua compares to EPA limits

Contaminant 2015 4 mg/L (EXCEEDS LIMIT)
0 EPA Limit: 0.0005 mg/L
Probable carcinogen; liver & thyroid damage, immune suppression
Atrazine 2 mg/L (EXCEEDS LIMIT)
0 EPA Limit: 0.003 mg/L
Endocrine disruption, cardiovascular & reproductive effects
Benzene 2 mg/L (EXCEEDS LIMIT)
0 EPA Limit: 0.005 mg/L
Contaminant 2110 2 mg/L (EXCEEDS LIMIT)
0 EPA Limit: 0.005 mg/L
Leukemia & blood cancers (known carcinogen)

What This Means For You

Contaminant 2015 at 4 mg/L exceeds the EPA maximum of 0.0005 mg/L. Probable carcinogen; liver & thyroid damage, immune suppression. Consider granular activated carbon (GAC) filtration.

Atrazine at 2 mg/L exceeds the EPA maximum of 0.003 mg/L. Endocrine disruption, cardiovascular & reproductive effects. Consider granular activated carbon (GAC) filtration.

Benzene at 2 mg/L exceeds the EPA maximum of 0.005 mg/L.

Contaminant 2110 at 2 mg/L exceeds the EPA maximum of 0.005 mg/L. Leukemia & blood cancers (known carcinogen). Consider granular activated carbon (GAC) filtration.

Contaminant 2005 at 4 mg/L exceeds the EPA maximum of mg/L.

PFAS Detected in Service Area

PFAS ("forever chemicals") have been detected in water serving this system's area. 2 detections recorded.

Health concern: PFAS are linked to cancer, thyroid disease, immune suppression, and developmental effects. They do not break down naturally.
Recommended filter: Reverse osmosis (RO) or activated carbon filters certified for PFAS removal. Find the right filter โ†’

Contaminant 2015 was detected in this water system. granular activated carbon (GAC) filtration can reduce exposure.

Find a certified water filter โ†’

Comparable Water Systems

Similar-sized systems in Oklahoma

Grady Company Rwd #6
3,930 people
B 66 violations
Mannford
3,935 people
A 1 violation
Frederick
3,940 people
11 violations
Caddo Company Rwd #3
3,900 people
A 6 violations
15 violations

Estimated Remediation Costs

Average estimated costs across ZIP codes served by this system

Flood Insurance Water Filtration PFAS Treatment
Flood Insurance $1,500
Water Filtration $300
PFAS Treatment $250
Total Estimated Cost $2,050

Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.

Cost of Inaction

If water quality issues in this service area are not addressed, the estimated financial impact per household is:

Estimated Healthcare Costs $1,500

Annual per household (CDC est.)

PFAS Exposure - Lifetime Cost $1,000

Per person (emerging research est.)

Estimated Cumulative Cost Per Household

5 years
$7,665
10 years
$15,330
20 years
$30,660

Compare: Estimated remediation cost is $2,050 (one-time) vs. $15,330 in estimated inaction costs over 10 years.

Estimates based on published EPA, CDC, and peer-reviewed research. Individual costs vary by household size, property, and health factors. These are conservative lower-bound estimates intended for awareness, not financial advice.

System Overview

Choctaw Ua (EPA ID: OK2005510) is a community water system in Oklahoma that serves approximately 3,926 people from groundwater sources.

This system provides water to 4 ZIP codes across 4 communities.

ZIP-Area Home Safety Context: B (75/100)

This is the average Home Safety Score for 1 of 4 service-area ZIP codes with all required score domains observed. It is not a grade for the water utility.

Model 4.0.0 uses SDWIS identity plus accepted ECHO SDWA lifecycle-based water compliance, the UCMR 5 PFAS MCL screen, EPA radon zone, and annual EPA AirData AQI across three equally weighted domains. Missing required evidence suppresses the score.

Violation History

2 current noncompliance records in the accepted 2026Q2 snapshot; none are classified as health-based in this evidence.

Status breakdown for accepted records with record years 2021-2026: 50 resolved, 29 archived, 0 addressed, and 2 unaddressed. Under this source contract, current noncompliance is the sum of addressed and unaddressed records. Archived and resolved records are excluded from current noncompliance.

Recent Violations

Date Contaminant Type Status
October 1, 2025 Contaminant 2005 Non-health-based Archived
October 1, 2025 Contaminant 2010 Non-health-based Archived
October 1, 2025 Contaminant 2015 Non-health-based Archived
October 1, 2025 Contaminant 2020 Non-health-based Archived
October 1, 2025 Contaminant 2031 Non-health-based Archived
October 1, 2025 Contaminant 2032 Non-health-based Archived
October 1, 2025 Contaminant 2033 Non-health-based Archived
October 1, 2025 Contaminant 2034 Non-health-based Archived
October 1, 2025 Contaminant 2035 Non-health-based Archived
October 1, 2025 Contaminant 2036 Non-health-based Archived
October 1, 2025 Contaminant 2037 Non-health-based Archived
October 1, 2025 Atrazine Non-health-based Archived
October 1, 2025 Contaminant 2040 Non-health-based Archived
October 1, 2025 Contaminant 2041 Non-health-based Archived
October 1, 2025 Contaminant 2042 Non-health-based Archived
October 1, 2025 Contaminant 2046 Non-health-based Archived
October 1, 2025 Benzene Non-health-based Archived
October 1, 2025 Contaminant 2051 Non-health-based Archived
October 1, 2025 Contaminant 2065 Non-health-based Archived
October 1, 2025 Contaminant 2067 Non-health-based Archived

Contaminants Detected

The following contaminants have been flagged in EPA records for this water system:

Contaminant Category Violations Health-Based
Contaminant 2005 Other Violation 4 No
Contaminant 2010 Other Violation 4 No
Contaminant 2015 Other Violation 4 No
Contaminant 2065 Other Violation 4 No
Contaminant 2067 Other Violation 4 No
Contaminant 2274 Other Violation 4 No
Total Coliform Microbiological 4 No
Contaminant 2034 Other Violation 3 No
Contaminant 2036 Other Violation 3 No
Contaminant 2042 Other Violation 3 No
Contaminant 2046 Other Violation 3 No
Contaminant 2020 Other Violation 2 No
Contaminant 2031 Other Violation 2 No
Contaminant 2032 Other Violation 2 No
Contaminant 2033 Other Violation 2 No

Lead & Copper

EPA Lead and Copper Rule evidence attributed directly to this water system:

Lead Level Exceeds Action Level Sample Date
0.0114 mg/L No N/A

No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.

Radon Risk in Service Area

Dominant radon zone for ZIP codes served by this system: Zone 3 (Low Risk)

Need help with your water quality?

Typical cost: Water test: typically $20โ€“$50 (DIY kit) ยท Professional inspection: $150โ€“$400

Find the Right Water Filter

Free tip: Let cold water run for 2 minutes before drinking โ€” this helps flush lead from your pipes.

ZIP Codes Served

Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by OK or modeled from parcel and building-footprint data.

Data Sources

This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Choctaw Ua (OK2005510) on EPA.gov.

Frequently Asked Questions

Is Choctaw Ua water safe to drink?

The accepted 2026Q2 ECHO snapshot shows 2 current noncompliance records and zero current records classified as health-based. That classification is not a property-specific water test or safety guarantee.

How many people does Choctaw Ua serve?

Choctaw Ua serves approximately 3,926 people across 4 ZIP codes in Oklahoma.

Where does Choctaw Ua get its water?

The primary water source is groundwater.

Federal UCMR5 PFAS Monitoring: Tested Clean

This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). No PFAS compounds were detected.

Samples collected
290

Current MCL reflects the lowest state-enforceable limit (NYS 10 ppt for PFOA/PFOS, effective August 2020). The federal final MCL of 4 ppt for PFOA/PFOS (EPA April 2024 rule) is not enforceable until April 2029. Detections above 4 ppt but below 10 ppt are below current MCL but above the future federal limit.

Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) โ€” per-system federal sampling, 2023โ€“2025. EPA UCMR5 monitoring program โ†’

Understand PFAS health context and filtration โ†’

Frequently Asked Questions

Is water from Choctaw Ua safe to drink?
Choctaw Ua earns a B safety grade with 81 violations in the past 5 years. Tap water meets EPA standards for most contaminants.
What contaminants are in Choctaw Ua's water?
Detected contaminants include Contaminant 2015, Atrazine, Benzene, Contaminant 2110. Each is compared against EPA maximum contaminant levels (MCLs) in the detailed breakdown above.
Should I use a water filter?
Given 5 contaminants above EPA limits, a certified water filter can provide an extra layer of protection. The best type depends on specific contaminants in your water.
How many people does Choctaw Ua serve?
Choctaw Ua serves approximately 3,926 people with drinking water across 4 ZIP codes.
What is Choctaw Ua's water source?
Choctaw Ua draws water from groundwater sources. Source type affects which contaminants are most likely to be present.
Is there lead in Choctaw Ua's water?
The maximum detected lead level is 0.0114 mg/L. This is within EPA action level guidelines.
What is the demographic profile of Choctaw Ua's service area?
The Choctaw Ua service area has a median household income of $80,465. EPA EJScreen data classifies 46% of the population as disadvantaged, which may indicate greater vulnerability to environmental health risks.
Where does Choctaw Ua get its water?
Choctaw Ua's water is pumped from underground aquifers. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table. Based on the exported violation history and environmental factors, the source contamination risk is classified as elevated.

How to cite this page

APA ZipCheckup. (n.d.). Choctaw Ua (OK): 81 EPA Violations. https://zipcheckup.com/water-system/ok2005510/
BibTeX
@misc{zipcheckup-water-system-ok2005510,
  author = {{ZipCheckup}},
  title  = {{Choctaw Ua (OK): 81 EPA Violations}},
  year   = {n.d.},
  url    = {https://zipcheckup.com/water-system/ok2005510/}
}

What You Can Do

1

Test your water

Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter โ†’

2

Check your specific ZIP code

Water quality can vary within a system. View nearest ZIP report โ†’

3

Contact your utility

Choctaw Ua (EPA ID: OK2005510) - request the latest Consumer Confidence Report or ask about specific contaminants.

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