CASTLEWOOD, SD · Hamlin County
CASTLEWOOD Water System
Consumer Confidence Report status
CASTLEWOOD 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 CASTLEWOOD.
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)
- SD4600002
- System type
- Community Water System
- Population served
- 698
- Service connections
- 328
- Ownership
- local government
- Water source
- groundwater (wells)
CASTLEWOOD is one of 124 community water systems in South Dakota in the 501 to 3,300 people size category, serving 698 people from groundwater.
As of August 1, 2026, its federal record holds 4 entries between 1976 and 2021, all of which EPA lists as closed. Nothing has been added since 2021.
Of the 4, 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 volatile organic chemicals, the Stage 1 Disinfectants and Disinfection Byproducts Rule, and the Radionuclides and Revised Rad Rule.
Violation history
Treatment Technique No Certif. Operator
Health-basedStage 1 Disinfectants and Disinfection Byproducts Rule
June 7, 2021 – September 12, 2023
ResolvedMonitoring, Regular
—Xylenes, Total
July 1, 1996 – September 30, 1996
ResolvedMonitoring, Regular
—Styrene
January 1, 1995 – March 31, 1995
ResolvedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
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 |
|---|---|---|---|---|
| June 7, 2021 – September 12, 2023 | Treatment Technique No Certif. Operator | Stage 1 Disinfectants and Disinfection Byproducts Rule | Health-based | Resolved |
| July 1, 1996 – September 30, 1996 | Monitoring, Regular | Xylenes, Total | — | Resolved |
| January 1, 1995 – March 31, 1995 | Monitoring, Regular | Styrene | — | Resolved |
| July 1, 1976 – June 30, 1980 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Archived |
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- April 1, 2003State Compliance achieved13 linked violations
- August 13, 2002State Compliance achieved55 linked violations
- August 9, 1999State Compliance achieved49 linked violations
- October 31, 1996State Intentional no-action147 linked violations
Common questions
Is CASTLEWOOD required to publish a Consumer Confidence Report?
- Yes. CASTLEWOOD 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 CASTLEWOOD’s next Consumer Confidence Report due?
- CASTLEWOOD’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does CASTLEWOOD have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for CASTLEWOOD.
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
CASTLEWOOD
6057932220
CASTLEWOOD, SD 57223