Clay Rural Water System

ZipCheckup's reading of EPA SDWIS for Clay Rural Water System (SD4600626): no EPA violations recorded in the last five years. In every reporting cycle over the past five years, Clay Rural Water System has come through without a single EPA violation - a consistent performance across the full service population of approximately 4,780 residents that reflects both well-maintained infrastructure and reliable operational oversight.

Data: EPA SDWIS

System Overview

Clay Rural Water System (EPA ID: SD4600626) is a community water system in South Dakota that serves approximately 4,780 people from groundwater sources.

This system provides water to 10 ZIP codes across 10 communities.

ZIP-Area Home Safety Context: C (67/100)

This is the average Home Safety Score for 2 of 10 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

Lead & Copper

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

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.

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.

• 57001 - Alcester
• 57004 - Beresford
• 57010 - Burbank
• 57014 - Centerville
• 57025 - Elk Point
• 57034 - Hudson
• 57037 - Irene
• 57069 - Vermillion
• 57072 - Volin
• 57073 - Wakonda

Data Sources

This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Clay Rural Water System (SD4600626) on EPA.gov.

Frequently Asked Questions

Is Clay Rural Water System water safe to drink?

The accepted 2026Q2 ECHO snapshot contains zero violation records for Clay Rural 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 Clay Rural Water System serve?

Clay Rural Water System serves approximately 4,780 people across 10 ZIP codes in South Dakota.

Where does Clay Rural Water System get its water?

The primary water source is groundwater.

@misc{zipcheckup-water-system-sd4600626,
  author = {{ZipCheckup}},
  title  = {{Clay Rural Water System Water Quality Report, SD}},
  year   = {n.d.},
  url    = {https://zipcheckup.com/water-system/sd4600626/}
}