Public Water Partners

WAKONDA, SD · Union County

CLAY RWS/SOUTH UNION Water System

Consumer Confidence Report status

CLAY RWS/SOUTH UNION must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.

As of August 1, 2026, EPA's federal records show no open violations for CLAY RWS/SOUTH UNION.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace South Dakota’s official records. Always confirm current status with South Dakota before making decisions based on this information.

System facts

System ID (PWSID)
SD4602185
System type
Community Water System
Population served
1,447
Service connections
579
Ownership
privately owned
Water source
groundwater (wells)

CLAY RWS/SOUTH UNION is one of 124 community water systems in South Dakota in the 501 to 3,300 people size category, serving 1,447 people from groundwater.

As of August 1, 2026, its federal record holds 26 entries between 1999 and 2004, all of which EPA lists as closed. Nothing has been added since 2004.

All 26 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves synthetic organic chemicals, volatile organic chemicals, and the Radionuclides and Revised Rad Rule.

Violation history

  • Monitoring, Regular

    —

    Endothall

    April 1, 2004 – June 30, 2004

    Resolved

  • Monitoring, Regular

    —

    Diquat

    April 1, 2004 – June 30, 2004

    Resolved

  • Monitoring, Regular

    —

    Heptachlor

    April 1, 2004 – June 30, 2004

    Resolved

  • Monitoring, Regular

    —

    Benzo(a)pyrene

    April 1, 2004 – June 30, 2004

    Resolved

  • Monitoring, Regular

    —

    Carbofuran

    April 1, 2004 – June 30, 2004

    Resolved

  • Monitoring, Regular

    —

    OXAMYL

    April 1, 2004 – June 30, 2004

    Resolved

  • Monitoring, Regular

    —

    Dalapon

    April 1, 2004 – June 30, 2004

    Resolved

  • Monitoring, Regular

    —

    2,4-D

    April 1, 2004 – June 30, 2004

    Resolved

  • Monitoring, Regular

    —

    Picloram

    January 1, 2004 – March 30, 2004

    Resolved

  • Monitoring, Regular

    —

    2,4-D

    January 1, 2004 – March 30, 2004

    Resolved

  • Monitoring, Regular

    —

    Diquat

    January 1, 2004 – March 30, 2004

    Resolved

  • Monitoring, Regular

    —

    Heptachlor

    January 1, 2004 – March 30, 2004

    Resolved

  • Monitoring, Regular

    —

    Total Polychlorinated Biphenyls (PCB)

    January 1, 2004 – March 30, 2004

    Resolved

  • Monitoring, Regular

    —

    Hexachlorocyclopentadiene

    January 1, 2004 – March 30, 2004

    Resolved

  • Monitoring, Regular

    —

    BHC-GAMMA

    January 1, 2004 – March 30, 2004

    Resolved

  • Monitoring, Regular

    —

    Simazine

    January 1, 2004 – March 30, 2004

    Resolved

  • Monitoring, Regular

    —

    Dalapon

    January 1, 2004 – March 30, 2004

    Resolved

  • Monitoring, Regular

    —

    CHLOROBENZENE

    January 1, 2001 – December 31, 2001

    Resolved

  • Monitoring, Regular

    —

    Trichloroethylene

    January 1, 2001 – December 31, 2001

    Resolved

  • Monitoring, Regular

    —

    Combined Radium (-226 and -228)

    January 1, 1999 – December 31, 1999

    Resolved

  • Monitoring, Regular

    —

    1,1-Dichloroethylene

    January 1, 1999 – December 31, 1999

    Resolved

  • Monitoring, Regular

    —

    CHLOROBENZENE

    January 1, 1999 – December 31, 1999

    Resolved

  • Monitoring, Regular

    —

    Toluene

    January 1, 1999 – December 31, 1999

    Resolved

  • Monitoring, Regular

    —

    Endrin

    January 1, 1999 – December 31, 1999

    Resolved

  • Monitoring, Regular

    —

    Diquat

    January 1, 1999 – December 31, 1999

    Resolved

  • Monitoring, Regular

    —

    Nitrite

    January 1, 1999 – December 31, 1999

    Resolved

Resolved addressed and confirmed by the state

Enforcement actions

Common questions

Is CLAY RWS/SOUTH UNION required to publish a Consumer Confidence Report?

Yes. CLAY RWS/SOUTH UNION is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.

When is CLAY RWS/SOUTH UNION’s next Consumer Confidence Report due?

CLAY RWS/SOUTH UNION’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

Does CLAY RWS/SOUTH UNION have any open drinking water violations on record?

As of August 1, 2026, EPA's federal records show no open violations for CLAY RWS/SOUTH UNION.

What is a Consumer Confidence Report?

A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

Contact

CLAY RWS/SOUTH UNION

6052672088

WAKONDA, SD 57073