Custer City Public Water System
EPA ID: OK2002009 · 393 people served · 1 ZIP code
ZipCheckup's reading of EPA records for Custer City Public Water System (OK2002009): no drinking-water violations recorded since 2021. Checked against the EPA violation database, Custer City Public Water System returns no entries for its service territory of 393 people.
Data: EPA SDWIS
Service Area Map
Coverage area for Custer City Public Water System Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Custer City Public Water System have a median household income of $60,268 and about 1,596 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 84% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: On average, 100% of census tracts in the counties mapped to this service area are designated disadvantaged by the federal Climate and Economic Justice Screening Tool (CEJST, 2022 version). Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.
💧 Where Does Your Water Come From?
Custer City Public Water System's water is classified in EPA records as a groundwater source. 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.
Infrastructure Risk
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
Custer City Public Water System (EPA ID: OK2002009) is a community water system in Oklahoma that serves approximately 393 people from groundwater sources.
This system serves ZIP code 73669 in Thomas.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.0065 mg/L | No | 2023-12-31 |
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.
- 73669 - Thomas
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Custer City Public Water System (OK2002009) on EPA.gov.
Frequently Asked Questions
Is Custer City Public Water System water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Custer City Public Water System in the inclusive 2021-2026 record-year window. This is a compliance-record finding, not a guarantee about water at a specific tap.
How many people does Custer City Public Water System serve?
Custer City Public Water System serves approximately 393 people across 1 ZIP code in Oklahoma.
Where does Custer City Public Water System get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Custer City Public Water System Water Quality Report, OK. https://zipcheckup.com/water-system/ok2002009/
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