MISSION, SD · Todd County

MISSION Water System

Inactive system

This water system is marked inactive in EPA’s federal records as of April 1, 2005. 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 Todd 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): SD4600401
System type: Community Water System
Population served: 904
Service connections: 366
Ownership: local government
Water source: groundwater (wells)

MISSION is one of 124 community water systems in South Dakota in the 501 to 3,300 people size category, formerly serving 904 people from groundwater.

EPA's federal records list this system as inactive in 2005; the record below is historical.

As of August 1, 2026, its federal record holds 11 entries between 1976 and 2003, all of which EPA lists as closed. Nothing has been added since 2003.

Of the 11, 10 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, the Radionuclides and Revised Rad Rule, and the Consumer Confidence Rule.

Violation history

Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2003 – July 21, 2003
Resolved
Monitoring, Regular
—
Heptachlor
January 1, 2003 – December 31, 2003
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
January 1, 2003 – December 31, 2003
Resolved
Monitoring, Regular
—
Dalapon
January 1, 2003 – December 31, 2003
Resolved
Monitoring, Regular
—
Pentachlorophenol
January 1, 2003 – December 31, 2003
Resolved
Monitoring, Regular
—
Diquat
January 1, 2003 – December 31, 2003
Resolved
Monitoring, Regular
—
Glyphosate
January 1, 2003 – December 31, 2003
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
April 1, 1997 – April 30, 1997
Archived
Monitoring, Regular
—
Chromium
March 11, 1991 – March 10, 1994
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)

Period	Violation	Contaminant / rule	Health-based	Status
July 1, 2003 – July 21, 2003	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
January 1, 2003 – December 31, 2003	Monitoring, Regular	Heptachlor	—	Resolved
January 1, 2003 – December 31, 2003	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
January 1, 2003 – December 31, 2003	Monitoring, Regular	Dalapon	—	Resolved
January 1, 2003 – December 31, 2003	Monitoring, Regular	Pentachlorophenol	—	Resolved
January 1, 2003 – December 31, 2003	Monitoring, Regular	Diquat	—	Resolved
January 1, 2003 – December 31, 2003	Monitoring, Regular	Glyphosate	—	Resolved
April 1, 1997 – April 30, 1997	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Archived
March 11, 1991 – March 10, 1994	Monitoring, Regular	Chromium	—	Resolved
July 1, 1976 – June 30, 1980	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived
July 1, 1976 – June 30, 1980	Monitoring, Regular	Combined Radium (-226 and -228)	—	Archived

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

Enforcement actions

January 23, 2004State Intentional no-action4 linked violations
January 23, 2004State Intentional no-action8 linked violations
January 23, 2004State Intentional no-action7 linked violations
January 23, 2004State Intentional no-action4 linked violations
January 23, 2004State Intentional no-action5 linked violations
January 23, 2004State Intentional no-action5 linked violations
January 23, 2004State Intentional no-action4 linked violations
January 23, 2004State Intentional no-action4 linked violations
January 23, 2004State Intentional no-action4 linked violations
January 13, 2004State Compliance achieved3 linked violations
January 13, 2004State Compliance achieved5 linked violations
January 13, 2004State Compliance achieved4 linked violations
January 13, 2004State Compliance achieved3 linked violations
January 13, 2004State Compliance achieved337 linked violations
January 13, 2004State Compliance achieved4 linked violations
August 31, 2000State Public Notification received39 linked violations
June 29, 1995State Compliance achieved53 linked violations
June 6, 1995State Compliance achieved135 linked violations

Last known contact on file (system is inactive)

Not on record

402-376-3421

MISSION, SD 575550337