Saipan, MP

Commonwealth Utilities Corp (Tinian) 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): MP0000002
System type: Community Water System
Population served: 3,005
Service connections: 733
Ownership: state government
Water source: groundwater (wells)

Violation history

Failure To Address Deficiency
Health-based
Groundwater Rule
December 31, 2022 – February 28, 2023
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
December 31, 2022 – June 30, 2023
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
January 1, 2020 – September 23, 2022
Resolved
Failure To Address Deficiency
Health-based
Groundwater Rule
July 30, 2019 – August 2, 2022
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)
April 1, 2008 – April 30, 2008
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
April 1, 2007 – April 30, 2007
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
January 1, 2005 – December 14, 2005
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
January 1, 2005 – December 14, 2005
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
January 1, 2003 – December 14, 2005
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
January 1, 2003 – December 14, 2005
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
July 1, 2002 – May 24, 2005
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
July 1, 2002 – May 24, 2005
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
January 1, 2002 – May 24, 2005
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
January 1, 2002 – May 24, 2005
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
July 1, 2001 – June 26, 2003
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
July 1, 2001 – June 26, 2003
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
December 31, 2022 – February 28, 2023	Failure To Address Deficiency	Groundwater Rule	Health-based	Resolved
December 31, 2022 – June 30, 2023	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
January 1, 2020 – September 23, 2022	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
July 30, 2019 – August 2, 2022	Failure To Address Deficiency	Groundwater Rule	Health-based	Resolved
August 1, 2008 – August 31, 2008	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
April 1, 2008 – April 30, 2008	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
April 1, 2007 – April 30, 2007	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
January 1, 2005 – December 14, 2005	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
January 1, 2005 – December 14, 2005	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
January 1, 2003 – December 14, 2005	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
January 1, 2003 – December 14, 2005	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
July 1, 2002 – May 24, 2005	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
July 1, 2002 – May 24, 2005	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
January 1, 2002 – May 24, 2005	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
January 1, 2002 – May 24, 2005	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
July 1, 2001 – June 26, 2003	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
July 1, 2001 – June 26, 2003	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

June 30, 2023State Compliance achieved1 linked violation
February 28, 2023State Compliance achieved1 linked violation
September 23, 2022State Compliance achieved1 linked violation
August 2, 2022State Compliance achieved1 linked violation
December 30, 2008State Compliance achieved1 linked violation
December 30, 2008State Compliance achieved1 linked violation
August 22, 2007State Compliance achieved1 linked violation
December 14, 2005State Compliance achieved1 linked violation
December 14, 2005State Compliance achieved1 linked violation
December 14, 2005State Compliance achieved1 linked violation
December 14, 2005State Compliance achieved1 linked violation
May 24, 2005State Compliance achieved1 linked violation
May 24, 2005State Compliance achieved1 linked violation
May 24, 2005State Compliance achieved1 linked violation
May 24, 2005State Compliance achieved1 linked violation
June 26, 2003State Compliance achieved1 linked violation
June 26, 2003State Compliance achieved1 linked violation

Contact

Commonwealth Utility Corporation

6706644282

Saipan, MP 96950