Public Water Partners

Saipan, MP

Commonwealth Utilities Corp (Saipan) Water System

Consumer Confidence Report status

Commonwealth Utilities Corp (Saipan) must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.

As of August 1, 2026, EPA's federal records show no open violations for Commonwealth Utilities Corp (Saipan).

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 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)

Commonwealth Utilities Corp (Saipan) is the largest community water system in Northern Mariana Islands, serving 48,524 people from groundwater.

As of August 1, 2026, its federal record holds 65 entries between 2001 and 2023, all of which EPA lists as closed. Nothing has been added since 2023.

Of the 65, 21 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, the Lead and Copper Rule, and the Groundwater Rule.

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, Monthly (TCR)

    Health-based

    Coliform (TCR)

    October 1, 2007 – October 30, 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)

    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, Monthly (TCR)

    Health-based

    Coliform (TCR)

    June 1, 2003 – June 30, 2003

    Resolved
  • Maximum Contaminant Level Violation, Acute (TCR)

    Health-based

    Coliform (TCR)

    June 1, 2003 – June 30, 2003

    Archived
  • 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
  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    July 1, 2001 – July 31, 2001

    Resolved
  • Initial Tap Sampling for Pb and Cu

    Lead and Copper Rule

    July 1, 2001 – May 3, 2005

    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)

Enforcement actions

Common questions

Is Commonwealth Utilities Corp (Saipan) required to publish a Consumer Confidence Report?

Yes. Commonwealth Utilities Corp (Saipan) is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.

When is Commonwealth Utilities Corp (Saipan)’s next Consumer Confidence Report due?

Commonwealth Utilities Corp (Saipan)’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

Does Commonwealth Utilities Corp (Saipan) have any open drinking water violations on record?

As of August 1, 2026, EPA's federal records show no open violations for Commonwealth Utilities Corp (Saipan).

What is a Consumer Confidence Report?

A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

Contact

Commonwealth Utility Corporation

6706644282

Saipan, MP 96950