Public Water Partners

ONAKA, SD · Faulk County

ONAKA Water System

Inactive system

This water system is marked inactive in EPA’s federal records as of January 1, 2008. It is no longer an operating public water system under this PWSID, and no compliance deadlines — including the 2027 Consumer Confidence Report rule — apply to it.

If you are a resident looking for your current water provider, see water systems in Faulk County, SD.

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)
SD4600232
System type
Community Water System
Population served
26
Service connections
20
Ownership
local government
Water source
groundwater (wells)

ONAKA is one of 583 community water systems in South Dakota in the 500 or fewer people size category, formerly serving 26 people from groundwater.

EPA's federal records list this system as inactive in 2008; the record below is historical.

As of August 1, 2026, its federal record holds 3 entries between 1976 and 2007, all of which EPA lists as closed. Nothing has been added since 2007.

All 3 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 the Radionuclides and Revised Rad Rule and the Total Coliform Rules.

Violation history

  • Monitoring, Routine Minor (TCR)

    —

    Coliform (TCR)

    July 1, 2007 – July 31, 2007

    Resolved

  • 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

No enforcement actions on record for this system.

Last known contact on file (system is inactive)

ONAKA

Phone not on record

ONAKA, SD 57466