CLAREMONT, SD · Marshall County

NEWPORT COLONY Water System

Inactive system

This water system is marked inactive in EPA’s federal records as of September 1, 2021. 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 Marshall 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): SD4602029
System type: Community Water System
Population served: 130
Service connections: 26
Ownership: privately owned
Water source: groundwater (wells)

NEWPORT COLONY is one of 583 community water systems in South Dakota in the 500 or fewer people size category, formerly serving 130 people from groundwater.

EPA's federal records list this system as inactive in 2021; the record below is historical.

As of August 1, 2026, its federal record holds 52 entries between 2008 and 2019, all of which EPA lists as closed. Nothing has been added since 2019.

Of the 52, 40 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, inorganic chemicals, and synthetic organic chemicals.

Violation history

Monitoring, Source Water (GWR)
—
E. COLI
December 21, 2019 – January 22, 2020
Resolved
Monitoring, Regular
—
Benzene
January 1, 2019 – December 31, 2019
Resolved
Monitoring, Regular
—
BHC-GAMMA
January 1, 2019 – December 31, 2019
Resolved
Monitoring, Regular
—
Styrene
January 1, 2019 – December 31, 2019
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2019 – December 31, 2019
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2019 – December 31, 2019
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2019 – December 31, 2019
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2019 – December 31, 2019
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 2019 – December 31, 2019
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2019 – December 31, 2019
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 2019 – December 31, 2019
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2019 – December 31, 2019
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2019 – December 31, 2019
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2019 – December 31, 2019
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2019 – December 31, 2019
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2019 – December 31, 2019
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
January 1, 2019 – December 31, 2019
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
January 1, 2019 – December 31, 2019
Resolved
Monitoring, Regular
—
Heptachlor epoxide
January 1, 2019 – December 31, 2019
Resolved
Monitoring, Regular
—
Heptachlor
January 1, 2019 – December 31, 2019
Resolved
Monitoring, Regular
—
LASSO
January 1, 2019 – December 31, 2019
Resolved
Monitoring, Regular
—
Toluene
January 1, 2019 – December 31, 2019
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
March 29, 2015 – April 20, 2015
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Fluoride
October 1, 2014 – December 31, 2014
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Fluoride
April 1, 2014 – June 30, 2014
Resolved
Monitoring, Regular
—
Benzene
January 1, 2014 – December 31, 2014
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Fluoride
January 1, 2014 – March 31, 2014
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
Styrene
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2014 – December 31, 2014
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Fluoride
July 1, 2013 – September 30, 2013
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Fluoride
January 1, 2013 – March 31, 2013
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
January 2, 2012 – March 5, 2012
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Fluoride
January 1, 2012 – March 31, 2012
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2012 – March 31, 2012
Resolved
Monitoring, Regular
—
Toluene
January 1, 2012 – March 31, 2012
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
February 1, 2011 – February 28, 2011
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
October 24, 2010 – November 8, 2010
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Nitrate
October 1, 2010 – December 31, 2010
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2010 – June 30, 2010
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2009 – June 30, 2009
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2008 – June 30, 2008
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
December 21, 2019 – January 22, 2020	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
January 1, 2019 – December 31, 2019	Monitoring, Regular	Benzene	—	Resolved
January 1, 2019 – December 31, 2019	Monitoring, Regular	BHC-GAMMA	—	Resolved
January 1, 2019 – December 31, 2019	Monitoring, Regular	Styrene	—	Resolved
January 1, 2019 – December 31, 2019	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2019 – December 31, 2019	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2019 – December 31, 2019	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2019 – December 31, 2019	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2019 – December 31, 2019	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2019 – December 31, 2019	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2019 – December 31, 2019	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 2019 – December 31, 2019	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2019 – December 31, 2019	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2019 – December 31, 2019	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2019 – December 31, 2019	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2019 – December 31, 2019	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2019 – December 31, 2019	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
January 1, 2019 – December 31, 2019	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
January 1, 2019 – December 31, 2019	Monitoring, Regular	Heptachlor epoxide	—	Resolved
January 1, 2019 – December 31, 2019	Monitoring, Regular	Heptachlor	—	Resolved
January 1, 2019 – December 31, 2019	Monitoring, Regular	LASSO	—	Resolved
January 1, 2019 – December 31, 2019	Monitoring, Regular	Toluene	—	Resolved
March 29, 2015 – April 20, 2015	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
October 1, 2014 – December 31, 2014	Maximum Contaminant Level Violation, Average	Fluoride	Health-based	Resolved
April 1, 2014 – June 30, 2014	Maximum Contaminant Level Violation, Average	Fluoride	Health-based	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Benzene	—	Resolved
January 1, 2014 – March 31, 2014	Maximum Contaminant Level Violation, Average	Fluoride	Health-based	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Styrene	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
July 1, 2013 – September 30, 2013	Maximum Contaminant Level Violation, Average	Fluoride	Health-based	Resolved
January 1, 2013 – March 31, 2013	Maximum Contaminant Level Violation, Average	Fluoride	Health-based	Resolved
January 2, 2012 – March 5, 2012	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
January 1, 2012 – March 31, 2012	Maximum Contaminant Level Violation, Average	Fluoride	Health-based	Resolved
January 1, 2012 – March 31, 2012	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2012 – March 31, 2012	Monitoring, Regular	Toluene	—	Resolved
February 1, 2011 – February 28, 2011	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
October 24, 2010 – November 8, 2010	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
October 1, 2010 – December 31, 2010	Maximum Contaminant Level Violation, Average	Nitrate	Health-based	Resolved
April 1, 2010 – June 30, 2010	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
April 1, 2009 – June 30, 2009	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
April 1, 2008 – June 30, 2008	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

May 26, 2021State Compliance achieved3 linked violations
May 26, 2021State Compliance achieved5 linked violations
May 26, 2021State Compliance achieved5 linked violations
May 26, 2021State Compliance achieved3 linked violations
May 26, 2021State Compliance achieved7 linked violations
May 26, 2021State Compliance achieved3 linked violations
May 26, 2021State Compliance achieved1 linked violation
May 26, 2021State Compliance achieved6 linked violations
May 26, 2021State Compliance achieved4 linked violations
May 26, 2021State Compliance achieved4 linked violations
May 26, 2021State Compliance achieved4 linked violations
January 14, 2020State Public Notification requested6 linked violations
January 14, 2020State Public Notification requested5 linked violations
January 14, 2020State Public Notification requested6 linked violations
January 14, 2020State Public Notification requested5 linked violations
January 14, 2020State Public Notification requested6 linked violations
January 14, 2020State Public Notification requested4 linked violations
January 14, 2020State Public Notification requested4 linked violations
January 14, 2020State Public Notification requested4 linked violations
January 14, 2020State Public Notification requested4 linked violations
April 1, 2016State Compliance achieved2 linked violations
June 30, 2015State Compliance achieved2 linked violations
June 30, 2015State Compliance achieved1 linked violation
June 30, 2015State Compliance achieved3 linked violations
June 30, 2015State Compliance achieved5 linked violations
June 30, 2015State Compliance achieved2 linked violations
April 22, 2015State Public Notification received1 linked violation
April 15, 2015State Public Notification requested1 linked violation
February 4, 2015State Compliance achieved4 linked violations
February 4, 2015State Compliance achieved4 linked violations
February 4, 2015State Compliance achieved5 linked violations
February 4, 2015State Compliance achieved5 linked violations
February 1, 2015State Compliance achieved2 linked violations
January 26, 2015State Public Notification requested6 linked violations
January 26, 2015State Public Notification requested8 linked violations
January 26, 2015State Public Notification requested6 linked violations
January 26, 2015State Public Notification requested7 linked violations
January 26, 2015State Public Notification requested5 linked violations
January 26, 2015State Public Notification requested9 linked violations
December 5, 2014State Public Notification received4 linked violations
March 31, 2014State Public Notification received4 linked violations
November 27, 2013State Public Notification requested3 linked violations
June 17, 2013State Public Notification received7 linked violations
April 15, 2013State Public Notification received1 linked violation
April 15, 2013State Compliance achieved5 linked violations
December 5, 2012State Public Notification received2 linked violations
November 27, 2012State Public Notification requested2 linked violations
October 25, 2012State Administrative/Compliance Order without penalty issued3 linked violations
October 25, 2012State Administrative/Compliance Order without penalty issued4 linked violations
October 25, 2012State Administrative/Compliance Order without penalty issued4 linked violations
September 5, 2012State Public Notification requested2 linked violations
April 24, 2012State Public Notification received3 linked violations
April 23, 2012State Compliance achieved6 linked violations
April 23, 2012State Compliance achieved4 linked violations
April 23, 2012State Compliance achieved6 linked violations
April 23, 2012State Compliance achieved3 linked violations
April 23, 2012State Compliance achieved3 linked violations
April 23, 2012State Compliance achieved2 linked violations
April 10, 2012State Public Notification requested10 linked violations
April 10, 2012State Public Notification requested7 linked violations
April 10, 2012State Public Notification requested19 linked violations
March 5, 2012State Compliance achieved5 linked violations
February 2, 2012State Public Notification issued9 linked violations
August 22, 2011State Public Notification received9 linked violations
April 1, 2011State Compliance achieved2 linked violations
April 1, 2011State Compliance achieved2 linked violations
March 2, 2011State Public Notification requested9 linked violations
September 21, 2010State Public Notification received9 linked violations
June 2, 2009State Administrative/Compliance Order with penalty issued4 linked violations
December 18, 2008State Public Notification received14 linked violations
September 29, 2008State Public Notification requested32 linked violations
July 30, 2008State Public Notification requested6 linked violations
April 9, 2007State Public Notification received4 linked violations
November 14, 2006State Public Notification requested1 linked violation
July 24, 2006State Compliance achieved14 linked violations

Last known contact on file (system is inactive)

NEWPORT COLONY

6052945808

CLAREMONT, SD 57432