Union City
EPA ID: OK3000909 · 618 people served · 2 ZIP codes
ZipCheckup's reading of EPA records for Union City (OK3000909): 18 health-based violations recorded since 2021. 22 violations on file at Union City, none open; 618 people served.
Data: EPA SDWIS
Service Area Map
Coverage area for Union City Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Union City have a median household income of $75,434 and about 21,597 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 64% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
🌊 Where Does Your Water Come From?
Union City's water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
Infrastructure Risk
PFAS in ZIP Codes This System Serves
PFAS ("forever chemicals") have been reported in samples from water systems associated with the ZIP codes in this system's area. These results can come from other water systems serving the same ZIP codes; check the UCMR5 section for any results reported for this system. 1 detection recorded.
Comparable Water Systems
Similar-sized systems in Oklahoma
Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
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.
System Overview
Union City (EPA ID: OK3000909) is a community water system in Oklahoma that serves approximately 618 people from surface water sources.
This system provides water to 2 ZIP codes across 2 communities.
Violation History
Status breakdown for accepted records with record years 2021-2026: 4 resolved, 18 archived, 0 addressed, and 0 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 |
|---|---|---|---|
| January 1, 2025 | TTHM | Health-based | Archived |
| January 1, 2025 | TTHM | Health-based | Archived |
| December 30, 2024 | TTHM | Non-health-based | Resolved |
| October 1, 2024 | TTHM | Health-based | Archived |
| October 1, 2024 | TTHM | Health-based | Archived |
| July 1, 2024 | TTHM | Health-based | Archived |
| July 1, 2024 | TTHM | Health-based | Archived |
| June 1, 2024 | Chlorine | Non-health-based | Resolved |
| April 1, 2024 | TTHM | Health-based | Archived |
| April 1, 2024 | TTHM | Health-based | Archived |
| January 1, 2024 | TTHM | Health-based | Archived |
| January 1, 2024 | TTHM | Health-based | Archived |
| October 1, 2023 | TTHM | Health-based | Archived |
| October 1, 2023 | TTHM | Health-based | Archived |
| September 29, 2023 | TTHM | Non-health-based | Resolved |
| July 1, 2023 | TTHM | Health-based | Archived |
| July 1, 2023 | TTHM | Health-based | Archived |
| June 30, 2023 | TTHM | Non-health-based | Resolved |
| April 1, 2023 | TTHM | Health-based | Archived |
| April 1, 2023 | TTHM | Health-based | Archived |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| TTHM | MCL Violation, Monitoring & Reporting | 21 | Yes |
| Chlorine | Monitoring & Reporting | 1 | No |
Health Risk Details
Haloacetic Acids (HAA5) (EPA limit: 0.06 mg/L)
Increased risk of cancer
Treatment options (verify a product is certified to reduce this contaminant): granular activated carbon (GAC), carbon block filter, reverse osmosis. Find the right filter →
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| Below the reporting limit | No | 2024-12-31 |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Ask your water utility whether running cold water for 2 minutes is enough to flush your plumbing before drinking.
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 available EPA compliance records for Union City (OK3000909) on EPA.gov.
Frequently Asked Questions
Is Union City water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Union City; its 22 accepted 2021-2026 records are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does Union City serve?
Union City serves approximately 618 people across 2 ZIP codes in Oklahoma.
Where does Union City get its water?
The primary water source is surface water.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Union City (OK): 18 Health Violations. https://zipcheckup.com/water-system/ok3000909/
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author = {{ZipCheckup}},
title = {{Union City (OK): 18 Health Violations}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/ok3000909/}
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What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Union City (EPA ID: OK3000909) - request the latest Consumer Confidence Report or ask about specific contaminants.