Clay Rws/south Union
EPA ID: SD4602185 · 1,447 people served · 3 ZIP codes
ZipCheckup's reading of EPA SDWIS for Clay Rws/south Union (SD4602185): no EPA violations recorded in the last five years. EPA data: Clay Rws/south Union - zero violations, five years, 1,447 served.
Data: EPA SDWIS
Service Area Map
Coverage area for Clay Rws/south Union Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Clay Rws/south Union serves a community with a median household income of $88,466 and an estimated 12,692 residents across its service area. Approximately 47% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Clay Rws/south Union'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.
Infrastructure Risk
Comparable Water Systems
Similar-sized systems in South Dakota
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
Clay Rws/south Union (EPA ID: SD4602185) is a community water system in South Dakota that serves approximately 1,447 people from groundwater sources.
This system provides water to 3 ZIP codes across 3 communities.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.001 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 1 (High Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
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: Let cold water run for 2 minutes before drinking — 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 SD 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 Clay Rws/south Union (SD4602185) on EPA.gov.
Frequently Asked Questions
Is Clay Rws/south Union water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Clay Rws/south Union 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 Clay Rws/south Union serve?
Clay Rws/south Union serves approximately 1,447 people across 3 ZIP codes in South Dakota.
Where does Clay Rws/south Union get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Clay Rws/south Union Water Quality Report, SD. https://zipcheckup.com/water-system/sd4602185/
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title = {{Clay Rws/south Union Water Quality Report, SD}},
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url = {https://zipcheckup.com/water-system/sd4602185/}
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