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Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDMP0000002
PWS NameCommonwealth Utilities Corp (Tinian)
PWS TypeCommunity water system
Owner TypeState or Territorial Government
Primary SourceGround water
Primacy TypeTerritory
Is Wholesaler?Yes
Population Served3005
County Served

Note


The tables below list all violations that the state reported to EPA for this water system. Health-based violations are listed first, followed by treatment technique, MRDL, monitoring, reporting, and other violations.

Health-based Violations of maximum contaminant levels (MCLs) or maximum residual disinfectant levels (MRDLs), which specify the highest concentrations of contaminants or disinfectants, respectively, allowed in drinking water; or of treatment technique (TT) rules, which specify required processes intended to reduce the amounts of contaminants in drinking water. MCLs, MRDLs, and treatment technique rules are all health-based drinking water standards.
Maximum Contaminant Level or MCL The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to the MCLGs as feasible using the best available treatment technology.
Treatment Technique A required process intended to reduce the level of a contaminant in drinking water.
Maximum residual disinfectant level or MRDL The highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.
Monitoring & reporting Failure to conduct regular monitoring of drinking water quality, as required by SDWA, or to submit monitoring results in a timely fashion to the primacy agency or EPA.
Public notification & other Failure to provide notification to the public as required by the Violations of Public Notification Rule and the Consumer Confidence Report Rule, and violations of other requirements such as those violations related to variances and exemptions.

PWS Violation


Violations

Violation Category CodeViolation Type DescriptionRule NameContaminant NameViolation IDCompliance Status DescriptionCompliance Period Begin DateCompliance Period End DateIs Health Based Ind
OtherPublic Notification Violation for NPDWR ViolationPublic Notice Rule and Revised PN RulePublic Notice0000002757500122022Returned to Compliance31-DEC-2022 - No
TTFailure To Address DeficiencyGround Water RuleGroundwater Rule0000002450700122022Returned to Compliance31-DEC-2022 - Yes
MRFollow-up Or Routine LCR Tap M/RLead and Copper RuleLead and Copper Rule000000252500012020Returned to Compliance01-JAN-2020 - No
TTFailure To Address DeficiencyGround Water RuleGroundwater Rule000000245070072019Returned to Compliance30-JUL-2019 - Yes
MCLMaximum Contaminant Level Violation, Monthly (TCR)Total Coliform RuleColiform (TCR)000000222310082008Returned to Compliance01-AUG-200831-AUG-2008Yes
MCLMaximum Contaminant Level Violation, Monthly (TCR)Total Coliform RuleColiform (TCR)000000222310042008Returned to Compliance01-APR-200830-APR-2008Yes
MCLMaximum Contaminant Level Violation, Monthly (TCR)Total Coliform RuleColiform (TCR)000000222310042007Returned to Compliance01-APR-200730-APR-2007Yes
MRInitial Tap Sampling for Pb and CuLead and Copper RuleLead and Copper Rule0000002515000120050Returned to Compliance01-JAN-2005 - No
MRInitial Tap Sampling for Pb and CuLead and Copper RuleLead and Copper Rule0000002515000120051Returned to Compliance01-JAN-2005 - No
MRInitial Tap Sampling for Pb and CuLead and Copper RuleLead and Copper Rule0000002515000120030Returned to Compliance01-JAN-2003 - No
MRInitial Tap Sampling for Pb and CuLead and Copper RuleLead and Copper Rule0000002515000120031Returned to Compliance01-JAN-2003 - No
MRInitial Tap Sampling for Pb and CuLead and Copper RuleLead and Copper Rule0000002515000720020Returned to Compliance01-JUL-2002 - No
MRInitial Tap Sampling for Pb and CuLead and Copper RuleLead and Copper Rule0000002515000720021Returned to Compliance01-JUL-2002 - No
MRInitial Tap Sampling for Pb and CuLead and Copper RuleLead and Copper Rule0000002515000120020Returned to Compliance01-JAN-2002 - No
MRInitial Tap Sampling for Pb and CuLead and Copper RuleLead and Copper Rule0000002515000120021Returned to Compliance01-JAN-2002 - No
MRInitial Tap Sampling for Pb and CuLead and Copper RuleLead and Copper Rule0000002515000720010Returned to Compliance01-JUL-2001 - No
MRInitial Tap Sampling for Pb and CuLead and Copper RuleLead and Copper Rule0000002515000720011Returned to Compliance01-JUL-2001 - No
  • 1 - 17 of 17

Enforcement Actions


Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
0000002OX06302395700000002757500122022SOXState Compliance achieved30-JUN-2023StateSubsequent reporting of required results.
0000002OX02282389830000002450700122022SOXState Compliance achieved28-FEB-2023StateDeficiency/Defect corrected.
0000002OX0923228981000000252500012020SOXState Compliance achieved23-SEP-2022StateSubsequent reporting of required results.
0000002OX0802228868000000245070072019SOXState Compliance achieved02-AUG-2022StateDeficiency/Defect corrected.
0000002OX1230088320000000222310082008SOXState Compliance achieved30-DEC-2008StateSubsequent reporting of required results.
0000002OX1230088319000000222310042008SOXState Compliance achieved30-DEC-2008StateSubsequent reporting of required results.
0000002OX0822078318000000222310042007SOXState Compliance achieved22-AUG-2007StateSubsequent reporting of required results.
0000002OX12140533120000002515000120051SOXState Compliance achieved14-DEC-2005State -
0000002OX12140533100000002515000120031SOXState Compliance achieved14-DEC-2005State -
0000002OX12140533090000002515000120030SOXState Compliance achieved14-DEC-2005State -
0000002OX12140533110000002515000120050SOXState Compliance achieved14-DEC-2005State -
0000002OX05240533070000002515000720020SOXState Compliance achieved24-MAY-2005State -
0000002OX05240533060000002515000120021SOXState Compliance achieved24-MAY-2005State -
0000002OX05240533050000002515000120020SOXState Compliance achieved24-MAY-2005State -
0000002OX05240533080000002515000720021SOXState Compliance achieved24-MAY-2005State -
0000002OX06260333040000002515000720011SOXState Compliance achieved26-JUN-2003State -
0000002OX06260333030000002515000720010SOXState Compliance achieved26-JUN-2003State -
  • 1 - 17 of 17

PWS Facilities


All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
Maui Well #10000002GWTQ1YesWell Ground waterOtherInactive
MAUI WELL #1161YesWell Ground waterPermanentInactive
Maui Well #20000002GWTQ2YesWell Ground waterPermanentActive
DEEP WELL #6164YesWell Ground waterOtherInactive
DEEP WELL #4163YesWell Ground waterOtherInactive
Deep Well #60000002GWTQ6YesWell Ground waterOtherInactive
Deep Well #40000002GWTQ4YesWell Ground waterOtherInactive
Maui 2 Ep0000002EPTQ2NoCommon Headers - - Active
Distribution System0000002DS201NoDistribution System/Zone - - Active
Booster Pump #10000002PF001NoPump Facility - - Active
Maui 2 Sump Tank0000002ST001NoStorage - - Active
Marpo Heights Storage Tank0000002ST003NoStorage - - Active
Carolinas NEW Storage0000002ST004NoStorage - - Active
Carolinas Storage Tank0000002ST002NoStorage - - Inactive
MAUI- #1 SUMP TANK295NoStorage - - Inactive
Maui 2 Chlorinator0000002TP201NoTreatment Plant - - Active
Maui #1 Chlorinator0000002TP205NoTreatment Plant - - Inactive
TIQ-1 CHLORINATOR166NoTreatment Plant - - Inactive
MAUI #1 CHLORINATOR1992NoTreatment Plant - - Inactive
  • 1 - 19 of 19

PWS Treatment Processes


Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
Maui 2 Chlorinator0000002TP201Gaseous Chlorination, PostDisinfection
TIQ-1 CHLORINATOR166Gaseous Chlorination, PostDisinfection
  • 1 - 2 of 2

For more information on a Water System:
Ask the operators of your water system, contact your primacy agency or file a Freedom of Information Act (FOIA) request.
Drinking water in general: Find out more about your drinking water web site or call the Safe Drinking Water Hotline (1-800-426-4791). EPA has also prepared a table about various regulated drinking water contaminants.
Tools for accessing EPA drinking water data: Safe Drinking Water Information System (SDWIS) Federal Reporting Services and Drinking Water Performance and Results Report.
Research Data: As well as monitoring the levels of drinking water contaminants for which EPA has set standards, EPA, states, and water systems also carry out studies of contaminants that may need to be regulated in the future. For more information about these contaminants, please see the National Contaminant Occurrence Database.