BIG STONE CITY, SD · Grant County
BIG STONE CITY Water System
Consumer Confidence Report status
BIG STONE CITY 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 BIG STONE CITY.
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)
- SD4600007
- System type
- Community Water System
- Population served
- 412
- Service connections
- 283
- Ownership
- local government
- Water source
- groundwater (wells)
BIG STONE CITY is one of 583 community water systems in South Dakota in the 500 or fewer people size category, serving 412 people from groundwater.
As of August 1, 2026, its federal record holds 5 entries between 1976 and 2021, all of which EPA lists as closed. Nothing has been added since 2021.
All 5 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 Total Coliform Rules, the Radionuclides and Revised Rad Rule, and the Stage 1 Disinfectants and Disinfection Byproducts Rule.
Violation history
Monitoring, Routine (RTCR)
—Revised Total Coliform Rule
November 1, 2021 – November 30, 2021
ResolvedMonitoring and Reporting (DBP)
—Chlorine
October 1, 2021 – December 31, 2021
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
October 1, 2014 – October 31, 2014
ResolvedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
July 1, 1976 – June 30, 1980
ArchivedMonitoring, 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 |
|---|---|---|---|---|
| November 1, 2021 – November 30, 2021 | Monitoring, Routine (RTCR) | Revised Total Coliform Rule | — | Resolved |
| October 1, 2021 – December 31, 2021 | Monitoring and Reporting (DBP) | Chlorine | — | Resolved |
| October 1, 2014 – October 31, 2014 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | 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
- December 1, 2014State Compliance achieved37 linked violations
Common questions
Is BIG STONE CITY required to publish a Consumer Confidence Report?
- Yes. BIG STONE CITY 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 BIG STONE CITY’s next Consumer Confidence Report due?
- BIG STONE CITY’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does BIG STONE CITY have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for BIG STONE CITY.
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
BIG STONE CITY
6058628121
BIG STONE CITY, SD 57216