Drinking Water Compliance OS

NEW UNDERWOOD, SD · Pennington County

NEW UNDERWOOD Water System

Current status

No open violations on record as of July 4, 2026.

This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 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)
SD4600224
System type
Community Water System
Population served
679
Service connections
269
Ownership
local government
Water source
groundwater (wells)

Violation history

  • Monitoring and Reporting (DBP)

    Chlorine

    October 1, 2022 – December 31, 2022

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Combined Radium (-226 and -228)

    January 1, 2010 – March 31, 2010

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Combined Radium (-226 and -228)

    July 1, 2009 – September 30, 2009

    Resolved
  • Monitoring, Regular

    Combined Uranium

    April 1, 2003 – June 30, 2003

    Resolved
  • Notification, Public

    No contaminant on record

    July 26, 1990 – August 25, 1990

    Archived
  • Monitoring, Regular

    Gross Alpha, Excl. Radon and U

    July 1, 1976 – June 30, 1980

    Archived
  • Monitoring, Regular

    Combined Radium (-226 and -228)

    July 1, 1976 – June 30, 1980

    Archived

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

Contact

NEW UNDERWOOD

6057546777

NEW UNDERWOOD, SD 57761