BLACK HAWK, SD · Lawrence County

TERRY TROJAN WATER DISTRICT 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): SD4600053
System type: Community Water System
Population served: 400
Service connections: 220
Ownership: privately owned
Water source: groundwater (wells)

Violation history

Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2011 – September 19, 2012
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2008 – March 31, 2008
Resolved
Monitoring, Regular
—
OXAMYL
April 1, 2006 – June 30, 2006
Resolved
Monitoring, Regular
—
Dinoseb
April 1, 2006 – June 30, 2006
Resolved
Monitoring, Regular
—
Pentachlorophenol
April 1, 2006 – June 30, 2006
Resolved
Monitoring, Regular
—
Methoxychlor
January 1, 2006 – March 31, 2006
Resolved
Monitoring, Regular
—
BHC-GAMMA
January 1, 2006 – March 31, 2006
Resolved
Monitoring, Regular
—
Heptachlor epoxide
January 1, 2006 – March 31, 2006
Resolved
Monitoring, Regular
—
Diquat
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Toxaphene
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Glyphosate
October 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
LASSO
July 1, 2005 – September 30, 2005
Resolved
Monitoring, Regular
—
Atrazine
July 1, 2005 – September 30, 2005
Resolved
Monitoring, Regular
—
Methoxychlor
July 1, 2005 – September 30, 2005
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
July 1, 2005 – September 30, 2005
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
July 1, 2005 – September 30, 2005
Resolved
Monitoring, Regular
—
Endrin
July 1, 2005 – September 30, 2005
Resolved
Monitoring, Regular
—
BHC-GAMMA
July 1, 2005 – September 30, 2005
Resolved
Monitoring, Regular
—
Simazine
July 1, 2005 – September 30, 2005
Resolved
Monitoring, Regular
—
OXAMYL
July 1, 2005 – September 30, 2005
Resolved
Monitoring, Regular
—
Dalapon
July 1, 2005 – September 30, 2005
Resolved
Monitoring, Regular
—
Endothall
July 1, 2005 – September 30, 2005
Resolved
Monitoring, Regular
—
Selenium
July 1, 1979 – June 30, 1980
Archived
Monitoring, Regular
—
Arsenic
July 1, 1979 – June 30, 1980
Archived
Monitoring, Regular
—
Barium
July 1, 1979 – June 30, 1980
Archived
Monitoring, Regular
—
Cadmium
July 1, 1979 – June 30, 1980
Archived
Monitoring, Regular
—
Chromium
July 1, 1979 – June 30, 1980
Archived
Monitoring, Regular
—
Fluoride
July 1, 1979 – June 30, 1980
Archived
Monitoring, Regular
—
Mercury
July 1, 1979 – June 30, 1980
Archived
Monitoring, Regular
—
Nitrate
July 1, 1979 – June 30, 1980
Archived
Monitoring, 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
October 1, 2011 – September 19, 2012	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
January 1, 2008 – March 31, 2008	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
April 1, 2006 – June 30, 2006	Monitoring, Regular	OXAMYL	—	Resolved
April 1, 2006 – June 30, 2006	Monitoring, Regular	Dinoseb	—	Resolved
April 1, 2006 – June 30, 2006	Monitoring, Regular	Pentachlorophenol	—	Resolved
January 1, 2006 – March 31, 2006	Monitoring, Regular	Methoxychlor	—	Resolved
January 1, 2006 – March 31, 2006	Monitoring, Regular	BHC-GAMMA	—	Resolved
January 1, 2006 – March 31, 2006	Monitoring, Regular	Heptachlor epoxide	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	Diquat	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	Toxaphene	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring, Regular	Glyphosate	—	Resolved
July 1, 2005 – September 30, 2005	Monitoring, Regular	LASSO	—	Resolved
July 1, 2005 – September 30, 2005	Monitoring, Regular	Atrazine	—	Resolved
July 1, 2005 – September 30, 2005	Monitoring, Regular	Methoxychlor	—	Resolved
July 1, 2005 – September 30, 2005	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
July 1, 2005 – September 30, 2005	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
July 1, 2005 – September 30, 2005	Monitoring, Regular	Endrin	—	Resolved
July 1, 2005 – September 30, 2005	Monitoring, Regular	BHC-GAMMA	—	Resolved
July 1, 2005 – September 30, 2005	Monitoring, Regular	Simazine	—	Resolved
July 1, 2005 – September 30, 2005	Monitoring, Regular	OXAMYL	—	Resolved
July 1, 2005 – September 30, 2005	Monitoring, Regular	Dalapon	—	Resolved
July 1, 2005 – September 30, 2005	Monitoring, Regular	Endothall	—	Resolved
July 1, 1979 – June 30, 1980	Monitoring, Regular	Selenium	—	Archived
July 1, 1979 – June 30, 1980	Monitoring, Regular	Arsenic	—	Archived
July 1, 1979 – June 30, 1980	Monitoring, Regular	Barium	—	Archived
July 1, 1979 – June 30, 1980	Monitoring, Regular	Cadmium	—	Archived
July 1, 1979 – June 30, 1980	Monitoring, Regular	Chromium	—	Archived
July 1, 1979 – June 30, 1980	Monitoring, Regular	Fluoride	—	Archived
July 1, 1979 – June 30, 1980	Monitoring, Regular	Mercury	—	Archived
July 1, 1979 – June 30, 1980	Monitoring, Regular	Nitrate	—	Archived
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

July 22, 2008State Compliance achieved1 linked violation
July 22, 2008State Compliance achieved1 linked violation
July 22, 2008State Compliance achieved1 linked violation
April 14, 2008State Intentional no-action1 linked violation
April 11, 2008State Compliance achieved1 linked violation
April 11, 2008State Public Notification received2 linked violations
April 8, 2008State Public Notification requested1 linked violation
October 10, 2007State Public Notification received4 linked violations
July 6, 2007State Compliance achieved3 linked violations
March 28, 2007State Administrative/Compliance Order without penalty issued2 linked violations
March 28, 2007State Administrative/Compliance Order without penalty issued8 linked violations
March 28, 2007State Administrative/Compliance Order without penalty issued9 linked violations
March 28, 2007State Administrative/Compliance Order without penalty issued7 linked violations
March 28, 2007State Administrative/Compliance Order without penalty issued7 linked violations
March 28, 2007State Administrative/Compliance Order without penalty issued6 linked violations
March 28, 2007State Administrative/Compliance Order without penalty issued8 linked violations
March 28, 2007State Administrative/Compliance Order without penalty issued6 linked violations
March 28, 2007State Administrative/Compliance Order without penalty issued7 linked violations
March 28, 2007State Administrative/Compliance Order without penalty issued7 linked violations
March 28, 2007State Administrative/Compliance Order without penalty issued2 linked violations
March 28, 2007State Administrative/Compliance Order without penalty issued6 linked violations
March 28, 2007State Administrative/Compliance Order without penalty issued6 linked violations
March 28, 2007State Administrative/Compliance Order without penalty issued4 linked violations
March 28, 2007State Administrative/Compliance Order without penalty issued4 linked violations
March 28, 2007State Administrative/Compliance Order without penalty issued5 linked violations
February 26, 2007State Compliance achieved5 linked violations
February 26, 2007State Compliance achieved6 linked violations
February 26, 2007State Compliance achieved4 linked violations
February 26, 2007State Compliance achieved5 linked violations
February 26, 2007State Compliance achieved7 linked violations
February 26, 2007State Compliance achieved5 linked violations
February 26, 2007State Compliance achieved5 linked violations
February 26, 2007State Compliance achieved3 linked violations
February 26, 2007State Compliance achieved6 linked violations
February 26, 2007State Compliance achieved5 linked violations
February 26, 2007State Compliance achieved7 linked violations
February 26, 2007State Compliance achieved3 linked violations
February 26, 2007State Compliance achieved2 linked violations
February 26, 2007State Compliance achieved2 linked violations
February 26, 2007State Compliance achieved1 linked violation
February 26, 2007State Compliance achieved1 linked violation
February 26, 2007State Compliance achieved2 linked violations
February 26, 2007State Compliance achieved2 linked violations
February 26, 2007State Compliance achieved2 linked violations
February 26, 2007State Compliance achieved3 linked violations
February 26, 2007State Compliance achieved1 linked violation
February 26, 2007State Compliance achieved2 linked violations
February 26, 2007State Compliance achieved3 linked violations
February 26, 2007State Compliance achieved2 linked violations
February 26, 2007State Compliance achieved1 linked violation
February 26, 2007State Compliance achieved1 linked violation
February 26, 2007State Compliance achieved1 linked violation
February 26, 2007State Compliance achieved1 linked violation
February 26, 2007State Compliance achieved4 linked violations
February 26, 2007State Compliance achieved3 linked violations
February 26, 2007State Compliance achieved3 linked violations
February 26, 2007State Compliance achieved3 linked violations
February 26, 2007State Compliance achieved5 linked violations
February 26, 2007State Compliance achieved7 linked violations
February 26, 2007State Compliance achieved5 linked violations
July 28, 2006State Public Notification requested38 linked violations
July 28, 2006State Public Notification requested9 linked violations
July 28, 2006State Public Notification requested12 linked violations
July 28, 2006State Public Notification requested14 linked violations
July 28, 2006State Public Notification requested56 linked violations
July 28, 2006State Public Notification requested23 linked violations
May 1, 1993State Compliance achieved37 linked violations

Contact

TERRY TROJAN WATER DISTRICT

6057864366

BLACK HAWK, SD 57718