TIMBER LAKE, SD · Dewey County
TIMBER LAKE Water System
Current status
No open violations on record as of July 4, 2026.
This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.
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)
- SD4600411
- System type
- Community Water System
- Population served
- 499
- Service connections
- 210
- Ownership
- local government
- Water source
- groundwater (wells)
Violation history
Treatment Technique No Certif. Operator
Health-basedStage 1 Disinfectants and Disinfection Byproducts Rule
November 26, 2012 – August 8, 2013
ResolvedMonitoring, Regular
—o-Dichlorobenzene
January 1, 2012 – March 31, 2012
ResolvedMonitoring, Regular
—1,2-Dichloroethane
January 1, 2012 – March 31, 2012
ResolvedMonitoring, Regular
—1,1,1-Trichloroethane
January 1, 2012 – March 31, 2012
ResolvedMonitoring, Regular
—Xylenes, Total
January 1, 2012 – March 31, 2012
ResolvedMonitoring, Regular
—Benzo(a)pyrene
April 1, 2011 – June 30, 2011
ResolvedMonitoring, Regular
—Endrin
April 1, 2011 – June 30, 2011
ResolvedMonitoring, Regular
—Dalapon
April 1, 2011 – June 30, 2011
ResolvedMonitoring, Regular
—Total Polychlorinated Biphenyls (PCB)
April 1, 2011 – June 30, 2011
ResolvedMonitoring, Regular
—Ethylbenzene
January 1, 2011 – March 31, 2011
ResolvedMonitoring, Regular
—1,1-Dichloroethylene
January 1, 2011 – March 31, 2011
ResolvedMonitoring, Regular
—Styrene
January 1, 2011 – March 31, 2011
ResolvedMonitoring, Regular
—Trichloroethylene
January 1, 2011 – March 31, 2011
ResolvedMonitoring, Regular
—Chlordane
January 1, 2011 – March 31, 2011
ResolvedMonitoring, Regular
—Dinoseb
January 1, 2011 – March 31, 2011
ResolvedMonitoring, Regular
—Pentachlorophenol
January 1, 2011 – March 31, 2011
ResolvedMonitoring, Regular
—ETHYLENE DIBROMIDE
January 1, 2011 – March 31, 2011
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 26, 2012 – August 8, 2013 | Treatment Technique No Certif. Operator | Stage 1 Disinfectants and Disinfection Byproducts Rule | Health-based | Resolved |
| January 1, 2012 – March 31, 2012 | Monitoring, Regular | o-Dichlorobenzene | — | Resolved |
| January 1, 2012 – March 31, 2012 | Monitoring, Regular | 1,2-Dichloroethane | — | Resolved |
| January 1, 2012 – March 31, 2012 | Monitoring, Regular | 1,1,1-Trichloroethane | — | Resolved |
| January 1, 2012 – March 31, 2012 | Monitoring, Regular | Xylenes, Total | — | Resolved |
| April 1, 2011 – June 30, 2011 | Monitoring, Regular | Benzo(a)pyrene | — | Resolved |
| April 1, 2011 – June 30, 2011 | Monitoring, Regular | Endrin | — | Resolved |
| April 1, 2011 – June 30, 2011 | Monitoring, Regular | Dalapon | — | Resolved |
| April 1, 2011 – June 30, 2011 | Monitoring, Regular | Total Polychlorinated Biphenyls (PCB) | — | Resolved |
| January 1, 2011 – March 31, 2011 | Monitoring, Regular | Ethylbenzene | — | Resolved |
| January 1, 2011 – March 31, 2011 | Monitoring, Regular | 1,1-Dichloroethylene | — | Resolved |
| January 1, 2011 – March 31, 2011 | Monitoring, Regular | Styrene | — | Resolved |
| January 1, 2011 – March 31, 2011 | Monitoring, Regular | Trichloroethylene | — | Resolved |
| January 1, 2011 – March 31, 2011 | Monitoring, Regular | Chlordane | — | Resolved |
| January 1, 2011 – March 31, 2011 | Monitoring, Regular | Dinoseb | — | Resolved |
| January 1, 2011 – March 31, 2011 | Monitoring, Regular | Pentachlorophenol | — | Resolved |
| January 1, 2011 – March 31, 2011 | Monitoring, Regular | ETHYLENE DIBROMIDE | — | 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
- April 24, 2012State Compliance achieved10 linked violations
- April 11, 2012State Compliance achieved23 linked violations
- April 11, 2012State Compliance achieved23 linked violations
- April 10, 2012State Public Notification requested44 linked violations
- April 10, 2012State Public Notification requested20 linked violations
- July 26, 2011State Public Notification requested118 linked violations
- July 26, 2011State Public Notification requested93 linked violations
Contact
TIMBER LAKE
6058653790
TIMBER LAKE, SD 57656