Saipan, MP

Commonwealth Utilities Corp (Saipan) 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 Northern Mariana Islands’s official records. Always confirm current status with Northern Mariana Islands before making decisions based on this information.

System facts

System ID (PWSID): MP0000001
System type: Community Water System
Population served: 48,524
Service connections: 11,317
Ownership: state government
Water source: groundwater (wells)

Violation history

Maximum Contaminant Level Violation, E. coli (RTCR)
Health-based
Revised Total Coliform Rule
November 1, 2023 – November 23, 2023
Resolved
Treatment Technique, Level 1 Assessment (RTCR)
Health-based
Revised Total Coliform Rule
October 1, 2023 – October 14, 2023
Resolved
Failure To Address Deficiency
Health-based
Groundwater Rule
December 1, 2021 – April 19, 2022
Resolved
Failure To Address Deficiency
Health-based
Groundwater Rule
September 1, 2021 – January 11, 2022
Resolved
Failure To Address Deficiency
Health-based
Groundwater Rule
April 1, 2021 – December 17, 2021
Resolved
Failure To Address Deficiency
Health-based
Groundwater Rule
April 1, 2021 – January 11, 2022
Resolved
Failure To Address Deficiency
Health-based
Groundwater Rule
October 30, 2019 – January 11, 2022
Resolved
Failure To Address Deficiency
Health-based
Groundwater Rule
October 30, 2019 – January 11, 2022
Resolved
Maximum Contaminant Level Violation, E. coli (RTCR)
Health-based
Revised Total Coliform Rule
October 1, 2019 – October 31, 2019
Resolved
Failure To Address Deficiency
Health-based
Groundwater Rule
March 31, 2019 – January 11, 2022
Resolved
Failure To Address Deficiency
Health-based
Groundwater Rule
March 31, 2019 – January 11, 2022
Resolved
Failure To Address Deficiency
Health-based
Groundwater Rule
March 31, 2019 – January 11, 2022
Resolved
Failure To Address Deficiency
Health-based
Groundwater Rule
March 31, 2019 – January 11, 2022
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
March 1, 2016 – March 31, 2016
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
September 1, 2015 – September 30, 2015
Resolved
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
September 1, 2014 – September 30, 2014
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
December 1, 2008 – December 31, 2008
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 2008 – October 31, 2008
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
September 1, 2008 – September 30, 2008
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
September 1, 2008 – September 30, 2008
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
August 1, 2008 – August 31, 2008
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
August 1, 2008 – August 31, 2008
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
July 1, 2008 – July 15, 2008
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
June 1, 2008 – June 30, 2008
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
March 1, 2008 – March 10, 2008
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
February 1, 2008 – February 29, 2008
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
February 1, 2008 – February 12, 2008
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
November 1, 2007 – November 27, 2007
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
October 1, 2007 – October 31, 2007
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 2007 – October 30, 2007
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
August 1, 2007 – August 31, 2007
Resolved
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
June 1, 2007 – June 30, 2007
Archived
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
June 1, 2007 – June 30, 2007
Archived
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
April 1, 2007 – April 30, 2007
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
March 1, 2007 – March 31, 2007
Archived
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
February 1, 2007 – February 28, 2007
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
May 1, 2005 – May 31, 2005
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
January 1, 2005 – May 3, 2005
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
January 1, 2005 – May 3, 2005
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
October 1, 2004 – October 31, 2004
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
June 1, 2004 – June 30, 2004
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
March 1, 2004 – March 31, 2004
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
February 1, 2004 – February 29, 2004
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
January 1, 2004 – January 31, 2004
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
December 1, 2003 – December 31, 2003
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
September 1, 2003 – September 30, 2003
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
August 1, 2003 – August 31, 2003
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
June 1, 2003 – June 30, 2003
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
June 1, 2003 – June 30, 2003
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
January 1, 2003 – May 3, 2005
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
January 1, 2003 – May 3, 2005
Resolved
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
October 1, 2002 – October 31, 2002
Resolved
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
September 1, 2002 – September 30, 2002
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
July 1, 2002 – May 3, 2005
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
July 1, 2002 – May 3, 2005
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
April 1, 2002 – April 30, 2002
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
January 1, 2002 – May 3, 2005
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
January 1, 2002 – May 3, 2005
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 2001 – October 31, 2001
Resolved
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
September 1, 2001 – September 30, 2001
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
July 1, 2001 – May 3, 2005
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
July 1, 2001 – May 3, 2005
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
July 1, 2001 – July 31, 2001
Resolved
Water Quality Parameter M/R
—
Lead and Copper Rule
January 1, 2001 – June 30, 2001
Resolved
Water Quality Parameter M/R
—
Lead and Copper Rule
January 1, 2001 – June 30, 2001
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
November 1, 2023 – November 23, 2023	Maximum Contaminant Level Violation, E. coli (RTCR)	Revised Total Coliform Rule	Health-based	Resolved
October 1, 2023 – October 14, 2023	Treatment Technique, Level 1 Assessment (RTCR)	Revised Total Coliform Rule	Health-based	Resolved
December 1, 2021 – April 19, 2022	Failure To Address Deficiency	Groundwater Rule	Health-based	Resolved
September 1, 2021 – January 11, 2022	Failure To Address Deficiency	Groundwater Rule	Health-based	Resolved
April 1, 2021 – December 17, 2021	Failure To Address Deficiency	Groundwater Rule	Health-based	Resolved
April 1, 2021 – January 11, 2022	Failure To Address Deficiency	Groundwater Rule	Health-based	Resolved
October 30, 2019 – January 11, 2022	Failure To Address Deficiency	Groundwater Rule	Health-based	Resolved
October 30, 2019 – January 11, 2022	Failure To Address Deficiency	Groundwater Rule	Health-based	Resolved
October 1, 2019 – October 31, 2019	Maximum Contaminant Level Violation, E. coli (RTCR)	Revised Total Coliform Rule	Health-based	Resolved
March 31, 2019 – January 11, 2022	Failure To Address Deficiency	Groundwater Rule	Health-based	Resolved
March 31, 2019 – January 11, 2022	Failure To Address Deficiency	Groundwater Rule	Health-based	Resolved
March 31, 2019 – January 11, 2022	Failure To Address Deficiency	Groundwater Rule	Health-based	Resolved
March 31, 2019 – January 11, 2022	Failure To Address Deficiency	Groundwater Rule	Health-based	Resolved
March 1, 2016 – March 31, 2016	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
September 1, 2015 – September 30, 2015	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
September 1, 2014 – September 30, 2014	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Resolved
December 1, 2008 – December 31, 2008	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Resolved
October 1, 2008 – October 31, 2008	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
September 1, 2008 – September 30, 2008	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Resolved
September 1, 2008 – September 30, 2008	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
August 1, 2008 – August 31, 2008	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Resolved
August 1, 2008 – August 31, 2008	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
July 1, 2008 – July 15, 2008	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
June 1, 2008 – June 30, 2008	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
March 1, 2008 – March 10, 2008	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
February 1, 2008 – February 29, 2008	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Archived
February 1, 2008 – February 12, 2008	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
November 1, 2007 – November 27, 2007	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
October 1, 2007 – October 31, 2007	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Archived
October 1, 2007 – October 30, 2007	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
August 1, 2007 – August 31, 2007	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
June 1, 2007 – June 30, 2007	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Archived
June 1, 2007 – June 30, 2007	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Archived
April 1, 2007 – April 30, 2007	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Resolved
March 1, 2007 – March 31, 2007	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Archived
February 1, 2007 – February 28, 2007	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Resolved
May 1, 2005 – May 31, 2005	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
January 1, 2005 – May 3, 2005	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
January 1, 2005 – May 3, 2005	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
October 1, 2004 – October 31, 2004	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Resolved
June 1, 2004 – June 30, 2004	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Resolved
March 1, 2004 – March 31, 2004	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Resolved
February 1, 2004 – February 29, 2004	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Resolved
January 1, 2004 – January 31, 2004	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Resolved
December 1, 2003 – December 31, 2003	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Resolved
September 1, 2003 – September 30, 2003	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Resolved
August 1, 2003 – August 31, 2003	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Resolved
June 1, 2003 – June 30, 2003	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Archived
June 1, 2003 – June 30, 2003	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
January 1, 2003 – May 3, 2005	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
January 1, 2003 – May 3, 2005	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
October 1, 2002 – October 31, 2002	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Resolved
September 1, 2002 – September 30, 2002	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Resolved
July 1, 2002 – May 3, 2005	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
July 1, 2002 – May 3, 2005	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
April 1, 2002 – April 30, 2002	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Resolved
January 1, 2002 – May 3, 2005	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
January 1, 2002 – May 3, 2005	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
October 1, 2001 – October 31, 2001	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
September 1, 2001 – September 30, 2001	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 2001 – May 3, 2005	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
July 1, 2001 – May 3, 2005	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
July 1, 2001 – July 31, 2001	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
January 1, 2001 – June 30, 2001	Water Quality Parameter M/R	Lead and Copper Rule	—	Resolved
January 1, 2001 – June 30, 2001	Water Quality Parameter M/R	Lead and Copper Rule	—	Resolved

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

Enforcement actions

November 23, 2023State Compliance achieved1 linked violation
October 14, 2023State Compliance achieved1 linked violation
April 19, 2022State Compliance achieved1 linked violation
January 11, 2022State Compliance achieved1 linked violation
January 11, 2022State Compliance achieved1 linked violation
January 11, 2022State Compliance achieved1 linked violation
January 11, 2022State Compliance achieved1 linked violation
January 11, 2022State Compliance achieved1 linked violation
January 11, 2022State Compliance achieved1 linked violation
January 11, 2022State Compliance achieved1 linked violation
January 11, 2022State Compliance achieved1 linked violation
December 17, 2021State Compliance achieved1 linked violation
December 10, 2019State Compliance achieved1 linked violation
April 15, 2016State Compliance achieved1 linked violation
October 15, 2015State Compliance achieved1 linked violation
October 15, 2014State Compliance achieved1 linked violation
June 8, 2009State Compliance achieved1 linked violation
June 8, 2009State Compliance achieved1 linked violation
June 8, 2009State Compliance achieved1 linked violation
June 8, 2009State Compliance achieved1 linked violation
June 8, 2009State Compliance achieved1 linked violation
November 1, 2008State Compliance achieved1 linked violation
October 20, 2008State Public Notification requested1 linked violation
October 20, 2008State Formal Notice of Violation issued1 linked violation
July 15, 2008State Compliance achieved1 linked violation
July 15, 2008State Compliance achieved1 linked violation
April 24, 2008State Violation/Reminder Notice1 linked violation
April 24, 2008State Public Notification requested1 linked violation
March 14, 2008State Public Notification received1 linked violation
March 10, 2008State Compliance achieved1 linked violation
February 12, 2008State Compliance achieved1 linked violation
January 30, 2008State Formal Notice of Violation issued1 linked violation
November 27, 2007State Compliance achieved1 linked violation
October 30, 2007State Compliance achieved1 linked violation
October 30, 2007State Compliance achieved1 linked violation
August 15, 2007State Formal Notice of Violation issued1 linked violation
August 15, 2007State Public Notification requested1 linked violation
August 15, 2007State Formal Notice of Violation issued1 linked violation
August 15, 2007State Formal Notice of Violation issued1 linked violation
August 15, 2007State Public Notification requested1 linked violation
August 15, 2007State Public Notification requested1 linked violation
August 13, 2007State Formal Notice of Violation issued1 linked violation
May 10, 2007State Compliance achieved1 linked violation
May 9, 2007State Public Notification received1 linked violation
March 20, 2007State Compliance achieved1 linked violation
January 24, 2006State Compliance achieved1 linked violation
January 24, 2006State Compliance achieved1 linked violation
January 24, 2006State Compliance achieved1 linked violation
January 24, 2006State Compliance achieved1 linked violation
January 24, 2006State Compliance achieved1 linked violation
January 24, 2006State Compliance achieved1 linked violation
January 24, 2006State Compliance achieved1 linked violation
January 24, 2006State Compliance achieved1 linked violation
January 24, 2006State Compliance achieved1 linked violation
January 24, 2006State Compliance achieved1 linked violation
January 24, 2006State Compliance achieved1 linked violation
January 24, 2006State Compliance achieved1 linked violation
January 24, 2006State Compliance achieved1 linked violation
January 24, 2006State Compliance achieved1 linked violation
May 3, 2005State Compliance achieved1 linked violation
May 3, 2005State Compliance achieved1 linked violation
May 3, 2005State Compliance achieved1 linked violation
May 3, 2005State Compliance achieved1 linked violation
May 3, 2005State Compliance achieved1 linked violation
May 3, 2005State Compliance achieved1 linked violation
May 3, 2005State Compliance achieved1 linked violation
May 3, 2005State Compliance achieved1 linked violation
May 3, 2005State Compliance achieved1 linked violation
May 3, 2005State Compliance achieved1 linked violation
September 17, 2003State Public Notification requested1 linked violation
September 17, 2003State Violation/Reminder Notice1 linked violation
September 10, 2003State Compliance achieved1 linked violation
August 25, 2003State Public Notification requested1 linked violation
August 25, 2003State Violation/Reminder Notice1 linked violation
July 29, 2003State Public Notification received1 linked violation
July 29, 2003State Compliance achieved1 linked violation
June 23, 2003State Compliance achieved1 linked violation
June 23, 2003State Compliance achieved1 linked violation
November 30, 2001State Public Notification requested1 linked violation
November 30, 2001State Formal Notice of Violation issued1 linked violation

Contact

Commonwealth Utility Corporation

6706644282

Saipan, MP 96950