GARDEN CITY, SD · Clark County

HILLCREST COLONY Water System

Inactive system

This water system is marked inactive in EPA’s federal records as of November 1, 2014. 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 Clark 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): SD4602065
System type: Community Water System
Population served: 90
Service connections: 9
Ownership: privately owned
Water source: groundwater (wells)

HILLCREST COLONY is one of 583 community water systems in South Dakota in the 500 or fewer people size category, formerly serving 90 people from groundwater.

EPA's federal records list this system as inactive in 2014; the record below is historical.

As of August 1, 2026, its federal record holds 33 entries between 1991 and 2013, all of which EPA lists as closed. Nothing has been added since 2013.

Of the 33, 28 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, inorganic chemicals, and the Lead and Copper Rule.

Violation history

Failure To Address Deficiency
Health-based
Groundwater Rule
October 30, 2013 – November 1, 2014
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
July 21, 2013 – July 31, 2013
Resolved
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
July 1, 2013 – July 31, 2013
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
April 1, 2009 – April 30, 2009
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2007 – March 26, 2008
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
February 1, 2007 – February 28, 2007
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
September 1, 2006 – September 30, 2006
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
December 4, 2005 – December 11, 2008
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2005 – November 22, 2005
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
November 1, 2004 – November 30, 2004
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
September 1, 2001 – September 30, 2001
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
August 1, 2001 – August 31, 2001
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
April 1, 2001 – April 30, 2001
Resolved
Notification, Public
—
Lead and Copper Rule
March 10, 2001 – April 9, 2001
Archived
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
January 1, 2001 – March 31, 2001
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2000 – September 24, 2002
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
July 1, 1999 – July 31, 1999
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
May 1, 1999 – May 31, 1999
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
April 1, 1999 – April 30, 1999
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
January 1, 1999 – January 31, 1999
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
October 1, 1998 – October 31, 1998
Archived
Monitoring, Regular
—
Nitrate
January 1, 1997 – December 31, 1997
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
November 1, 1996 – November 30, 1996
Archived
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
March 1, 1996 – March 31, 1996
Archived
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
July 1, 1995 – May 22, 1996
Resolved
Monitoring, Regular
—
Dalapon
January 1, 1993 – December 31, 1995
Resolved
Monitoring, Regular
—
BHC-GAMMA
January 1, 1993 – December 31, 1995
Resolved
Monitoring, Regular
—
Arsenic
June 22, 1992 – June 21, 1995
Resolved
Monitoring, Regular
—
Cadmium
June 22, 1992 – June 21, 1995
Resolved
Monitoring, Regular
—
Thallium, Total
June 22, 1992 – June 21, 1995
Resolved
Monitoring, Regular
—
Beryllium, Total
June 22, 1992 – June 21, 1995
Resolved
Monitoring, Regular
—
Nickel
June 22, 1992 – June 21, 1995
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
September 1, 1991 – September 30, 1991
Resolved

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 30, 2013 – November 1, 2014	Failure To Address Deficiency	Groundwater Rule	Health-based	Resolved
July 21, 2013 – July 31, 2013	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
July 1, 2013 – July 31, 2013	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Resolved
April 1, 2009 – April 30, 2009	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 2007 – March 26, 2008	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
February 1, 2007 – February 28, 2007	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
September 1, 2006 – September 30, 2006	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
December 4, 2005 – December 11, 2008	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
July 1, 2005 – November 22, 2005	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
November 1, 2004 – November 30, 2004	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
September 1, 2001 – September 30, 2001	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
August 1, 2001 – August 31, 2001	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
April 1, 2001 – April 30, 2001	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
March 10, 2001 – April 9, 2001	Notification, Public	Lead and Copper Rule	—	Archived
January 1, 2001 – March 31, 2001	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
October 1, 2000 – September 24, 2002	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
July 1, 1999 – July 31, 1999	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
May 1, 1999 – May 31, 1999	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
April 1, 1999 – April 30, 1999	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
January 1, 1999 – January 31, 1999	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
October 1, 1998 – October 31, 1998	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
January 1, 1997 – December 31, 1997	Monitoring, Regular	Nitrate	—	Resolved
November 1, 1996 – November 30, 1996	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
March 1, 1996 – March 31, 1996	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Archived
July 1, 1995 – May 22, 1996	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
January 1, 1993 – December 31, 1995	Monitoring, Regular	Dalapon	—	Resolved
January 1, 1993 – December 31, 1995	Monitoring, Regular	BHC-GAMMA	—	Resolved
June 22, 1992 – June 21, 1995	Monitoring, Regular	Arsenic	—	Resolved
June 22, 1992 – June 21, 1995	Monitoring, Regular	Cadmium	—	Resolved
June 22, 1992 – June 21, 1995	Monitoring, Regular	Thallium, Total	—	Resolved
June 22, 1992 – June 21, 1995	Monitoring, Regular	Beryllium, Total	—	Resolved
June 22, 1992 – June 21, 1995	Monitoring, Regular	Nickel	—	Resolved
September 1, 1991 – September 30, 1991	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved

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

Enforcement actions

August 12, 2013State Public Notification received3 linked violations
November 1, 2009State Compliance achieved2 linked violations
May 4, 2009State Public Notification requested2 linked violations
February 1, 2009State Compliance achieved2 linked violations
December 11, 2008State Public Notification received3 linked violations
December 11, 2008State Compliance achieved1 linked violation
December 11, 2008State Compliance achieved1 linked violation
September 3, 2008State Public Notification received1 linked violation
September 1, 2007State Compliance achieved1 linked violation
March 15, 2007State Public Notification received2 linked violations
March 5, 2007State Public Notification requested2 linked violations
October 17, 2006State Public Notification received1 linked violation
October 2, 2006State Public Notification requested1 linked violation
January 4, 2006State Public Notification issued1 linked violation
November 22, 2005State Compliance achieved1 linked violation
November 19, 2005State Compliance achieved1 linked violation
October 1, 2005State Intentional no-action1 linked violation
August 1, 2005State Violation/Reminder Notice1 linked violation
December 8, 2004State Public Notification requested1 linked violation
November 3, 2004State Public Notification requested1 linked violation
September 22, 2003State Compliance achieved1 linked violation
February 18, 2003State Compliance achieved2 linked violations
February 1, 2003State Compliance achieved3 linked violations
February 1, 2003State Compliance achieved4 linked violations
December 18, 2002State Administrative/Compliance Order with penalty issued2 linked violations
December 18, 2002State Administrative/Compliance Order with penalty issued1 linked violation
December 18, 2002State Administrative/Compliance Order with penalty issued1 linked violation
December 18, 2002State Administrative/Compliance Order with penalty issued1 linked violation
December 18, 2002State Administrative/Compliance Order with penalty issued1 linked violation
December 18, 2002State Administrative/Compliance Order with penalty issued1 linked violation
December 18, 2002State Administrative/Compliance Order with penalty issued2 linked violations
December 18, 2002State Administrative/Compliance Order with penalty issued1 linked violation
December 18, 2002State Administrative/Compliance Order with penalty issued1 linked violation
December 18, 2002State Administrative/Compliance Order with penalty issued1 linked violation
December 18, 2002State Administrative/Compliance Order with penalty issued3 linked violations
December 18, 2002State Administrative/Compliance Order with penalty issued2 linked violations
December 18, 2002State Administrative/Compliance Order with penalty issued1 linked violation
December 18, 2002State Administrative/Compliance Order with penalty issued1 linked violation
December 18, 2002State Administrative/Compliance Order with penalty issued1 linked violation
December 18, 2002State Administrative/Compliance Order with penalty issued2 linked violations
December 18, 2002State Administrative/Compliance Order with penalty issued1 linked violation
December 18, 2002State Administrative/Compliance Order with penalty issued2 linked violations
December 18, 2002State Administrative/Compliance Order with penalty issued2 linked violations
December 18, 2002State Administrative/Compliance Order with penalty issued2 linked violations
December 18, 2002State Administrative/Compliance Order with penalty issued1 linked violation
October 9, 2002State Public Notification issued3 linked violations
October 2, 2002State Public Notification received1 linked violation
September 24, 2002State Compliance achieved1 linked violation
August 28, 2002State Compliance achieved1 linked violation
August 28, 2002State Compliance achieved2 linked violations
August 28, 2002State Compliance achieved1 linked violation
August 28, 2002State Compliance achieved1 linked violation
August 28, 2002State Compliance achieved1 linked violation
August 7, 2002State Violation/Reminder Notice4 linked violations
August 1, 2002State Public Notification requested2 linked violations
July 22, 2002State Public Notification received3 linked violations
July 2, 2002State Public Notification requested2 linked violations
April 11, 2002State Public Notification issued1 linked violation
January 31, 2002State Public Notification requested1 linked violation
January 17, 2002State Public Notification received1 linked violation
January 16, 2002State Public Notification received2 linked violations
January 11, 2002State Intentional no-action2 linked violations
January 11, 2002State Public Notification requested1 linked violation
January 11, 2002State Intentional no-action1 linked violation
January 10, 2002State Public Notification requested3 linked violations
November 29, 2001State Compliance achieved1 linked violation
November 29, 2001State Compliance achieved2 linked violations
November 29, 2001State Compliance achieved2 linked violations
November 29, 2001State Compliance achieved2 linked violations
October 16, 2001State Public Notification received1 linked violation
October 11, 2001State Public Notification requested2 linked violations
September 25, 2001State Public Notification received1 linked violation
September 18, 2001State Public Notification requested2 linked violations
September 18, 2001State Public Notification issued3 linked violations
August 9, 2001State Public Notification requested1 linked violation
July 12, 2001State Public Notification requested1 linked violation
July 11, 2001State Public Notification received1 linked violation
July 3, 2001State Public Notification requested2 linked violations
May 14, 2001State Public Notification received1 linked violation
May 10, 2001State Public Notification requested1 linked violation
April 20, 2001State Public Notification requested2 linked violations
February 1, 2001State Public Notification received1 linked violation
January 12, 2001State Public Notification requested1 linked violation
November 12, 1998State Public Notification requested5 linked violations
August 14, 1998State Public Notification received52 linked violations
March 12, 1997State Public Notification issued3 linked violations
February 10, 1997State Public Notification received25 linked violations
October 22, 1996State Public Notification requested28 linked violations
August 28, 1996State Compliance achieved12 linked violations
August 14, 1996State Compliance achieved21 linked violations
May 22, 1996State Compliance achieved4 linked violations
April 24, 1996State Public Notification requested36 linked violations
April 4, 1996State Public Notification received11 linked violations
March 18, 1996State Public Notification received6 linked violations
March 1, 1992State Compliance achieved3 linked violations

Last known contact on file (system is inactive)

HILLCREST COLONY

6055325709

GARDEN CITY, SD 57236