MP0000002 · Northern Mariana Islands
Commonwealth Utilities Corp (Tinian)
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 17
- EPA health-based flag
- 5
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 11
Find the utility’s annual water quality report. For current advisories, check the utility or local drinking-water authority.
Violations and what followed
Among 17 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 725 days. The interval uses the reporting periods and dates on file.
Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 0000002757500122022 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start December 31, 2022 · period end June 30, 2023 · first reported December 4, 2024 · EPA return-to-compliance field June 30, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0000002OX0630239570 June 30, 2023 Resolving State Compliance achieved EPA health-based flag · Resolved
Failure To Address DeficiencyViolation 0000002450700122022 · Groundwater Rule · Ground Water RuleNoncompliance period start December 31, 2022 · period end February 28, 2023 · first reported December 4, 2024 · EPA return-to-compliance field February 28, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0000002OX0228238983 February 28, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Follow-up Or Routine LCR Tap M/RViolation 000000252500012020 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start January 1, 2020 · period end September 23, 2022 · first reported December 4, 2024 · EPA return-to-compliance field September 23, 2022
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0000002OX0923228981 September 23, 2022 Resolving State Compliance achieved EPA health-based flag · Resolved
Failure To Address DeficiencyViolation 000000245070072019 · Groundwater Rule · Ground Water RuleNoncompliance period start July 30, 2019 · period end August 2, 2022 · first reported December 4, 2024 · EPA return-to-compliance field August 2, 2022
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0000002OX0802228868 August 2, 2022 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, Monthly (TCR)Violation 000000222310082008 · Coliform (TCR) · Total Coliform RuleNoncompliance period start August 1, 2008 · period end August 31, 2008 · first reported December 29, 2022 · EPA return-to-compliance field August 31, 2008
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0000002OX1230088320 December 30, 2008 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, Monthly (TCR)Violation 000000222310042008 · Coliform (TCR) · Total Coliform RuleNoncompliance period start April 1, 2008 · period end April 30, 2008 · first reported December 29, 2022 · EPA return-to-compliance field April 30, 2008
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0000002OX1230088319 December 30, 2008 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, Monthly (TCR)Violation 000000222310042007 · Coliform (TCR) · Total Coliform RuleNoncompliance period start April 1, 2007 · period end April 30, 2007 · first reported December 29, 2022 · EPA return-to-compliance field April 30, 2007
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0000002OX0822078318 August 22, 2007 Resolving State Compliance achieved Monitoring or reporting · Resolved
Initial Tap Sampling for Pb and CuViolation 0000002515000120051 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start January 1, 2005 · period end December 14, 2005 · first reported December 29, 2022 · EPA return-to-compliance field December 14, 2005
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0000002OX1214053312 December 14, 2005 Resolving State Compliance achieved Monitoring or reporting · Resolved
Initial Tap Sampling for Pb and CuViolation 0000002515000120050 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start January 1, 2005 · period end December 14, 2005 · first reported December 29, 2022 · EPA return-to-compliance field December 14, 2005
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0000002OX1214053311 December 14, 2005 Resolving State Compliance achieved Monitoring or reporting · Resolved
Initial Tap Sampling for Pb and CuViolation 0000002515000120031 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start January 1, 2003 · period end December 14, 2005 · first reported December 29, 2022 · EPA return-to-compliance field December 14, 2005
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0000002OX1214053310 December 14, 2005 Resolving State Compliance achieved Monitoring or reporting · Resolved
Initial Tap Sampling for Pb and CuViolation 0000002515000120030 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start January 1, 2003 · period end December 14, 2005 · first reported December 29, 2022 · EPA return-to-compliance field December 14, 2005
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0000002OX1214053309 December 14, 2005 Resolving State Compliance achieved Monitoring or reporting · Resolved
Initial Tap Sampling for Pb and CuViolation 0000002515000720021 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start July 1, 2002 · period end May 24, 2005 · first reported December 29, 2022 · EPA return-to-compliance field May 24, 2005
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0000002OX0524053308 May 24, 2005 Resolving State Compliance achieved Monitoring or reporting · Resolved
Initial Tap Sampling for Pb and CuViolation 0000002515000720020 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start July 1, 2002 · period end May 24, 2005 · first reported December 29, 2022 · EPA return-to-compliance field May 24, 2005
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0000002OX0524053307 May 24, 2005 Resolving State Compliance achieved Monitoring or reporting · Resolved
Initial Tap Sampling for Pb and CuViolation 0000002515000120021 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start January 1, 2002 · period end May 24, 2005 · first reported December 29, 2022 · EPA return-to-compliance field May 24, 2005
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0000002OX0524053306 May 24, 2005 Resolving State Compliance achieved Monitoring or reporting · Resolved
Initial Tap Sampling for Pb and CuViolation 0000002515000120020 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start January 1, 2002 · period end May 24, 2005 · first reported December 29, 2022 · EPA return-to-compliance field May 24, 2005
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0000002OX0524053305 May 24, 2005 Resolving State Compliance achieved Monitoring or reporting · Resolved
Initial Tap Sampling for Pb and CuViolation 0000002515000720011 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start July 1, 2001 · period end June 26, 2003 · first reported December 29, 2022 · EPA return-to-compliance field June 26, 2003
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0000002OX0626033304 June 26, 2003 Resolving State Compliance achieved Monitoring or reporting · Resolved
Initial Tap Sampling for Pb and CuViolation 0000002515000720010 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start July 1, 2001 · period end June 26, 2003 · first reported December 29, 2022 · EPA return-to-compliance field June 26, 2003
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 0000002OX0626033303 June 26, 2003 Resolving State Compliance achieved
EPA data and scope
How to read the records
The enforcement snapshot is federal fiscal 2026Q3. The EPA archive labels its violation file October 13, 2026. EPA says federal reporting can lag by several months. For current advisories, check your utility or local drinking-water authority.
- We matched active community water systems by public water system ID between EPA’s system search and SDWIS inventory. We show violations with a recorded noncompliance, initial reporting or return-to-compliance date from 2021 onward, plus earlier records listed as Addressed or Unaddressed.
- EPA’s health-based flag identifies violations of contaminant or disinfectant limits or treatment requirements. Monitoring and reporting violations describe required tests or reports. Neither category measures household exposure.
- Addressed means EPA records formal enforcement on a violation that remains unresolved in the snapshot. Unaddressed means no formal action is recorded for an unresolved violation. Resolved can mean compliance was restored, the rule ceased to apply, or further action was unnecessary. Archived is a separate status.
- We count a violation once per water system and group its distinct linked actions. Conflicting records are set aside. Places are EPA-listed search locations and can include mailing locations. Use the provider name and system ID to identify your service.
EPA data dictionary and files · EPA reporting and enforcement FAQ · Find an annual water quality report · How to get the report from your utility