Drinking Water Compliance OS

ARLINGTON, SD · Brookings County

SINAI Water System

Inactive system

This water system is marked inactive in EPA’s federal records as of May 1, 2015. 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 Brookings County, SD.

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)
SD4600293
System type
Community Water System
Population served
120
Service connections
68
Ownership
local government
Water source
groundwater (wells)

Violation history

  • Treatment Technique No Certif. Operator

    Health-based

    Stage 1 Disinfectants and Disinfection Byproducts Rule

    February 1, 2010 – April 12, 2010

    Resolved

  • Monitoring, Regular

    —

    Asbestos

    January 1, 1993 – December 31, 1995

    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)

SINAI

6059835074

ARLINGTON, SD 57212