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Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDNM3524330
PWS NameMOUNTAINAIR WATER SYSTEM
PWS TypeCommunity water system
Owner TypeLocal government
Primary SourceGround water
Primacy TypeState
Is Wholesaler?No
Population Served1505
County ServedTorrance

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
OtherFailure to Consult with StateGround Water RuleGroundwater Rule61851Open24-DEC-2025 - No
OtherConsumer Confidence Report Complete Failure to ReportConsumer Confidence RuleConsumer Confidence Rule61850Returned to Compliance01-JUL-2025 - No
MRFollow-up Or Routine LCR Tap M/RLead and Copper RuleLead and Copper Rule61849Open01-JUL-2025 - No
RPTLSL ReportingLead and Copper Rule RevisionsLEAD AND COPPER RULE REVISIONS61847Open17-OCT-2024 - No
TTLSL InventoryLead and Copper Rule RevisionsLEAD AND COPPER RULE REVISIONS61846Open17-OCT-2024 - Yes
OtherConsumer Confidence Report Inadequate ReportingConsumer Confidence RuleConsumer Confidence Rule61844Returned to Compliance01-OCT-2024 - No
MRFollow-up Or Routine LCR Tap M/RLead and Copper RuleLead and Copper Rule61845Open01-OCT-2024 - No
OtherConsumer Confidence Report Complete Failure to ReportConsumer Confidence RuleConsumer Confidence Rule61843Returned to Compliance01-JUL-2024 - No
MONMonitoring, Routine (RTCR)Revised Total Coliform RuleRevised Total Coliform Rule61841Returned to Compliance01-SEP-202030-SEP-2020No
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleChlorine61842Returned to Compliance01-JUL-202030-SEP-2020No
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleChlorine61840Returned to Compliance01-JUL-201730-SEP-2017No
TTFailure To Address DeficiencyGround Water RuleGroundwater Rule61837Returned to Compliance05-FEB-2017 - Yes
OtherConsumer Confidence Report Complete Failure to ReportConsumer Confidence RuleConsumer Confidence Rule61834Returned to Compliance01-JUL-2016 - No
OtherPublic Notification Violation for NPDWR ViolationPublic Notice Rule and Revised PN RulePublic Notice61838Returned to Compliance30-JAN-2016 - No
OtherConsumer Confidence Report Complete Failure to ReportConsumer Confidence RuleConsumer Confidence Rule61831Returned to Compliance01-JUL-2015 - No
OtherPublic Notification Violation for NPDWR ViolationPublic Notice Rule and Revised PN RulePublic Notice61833Returned to Compliance12-FEB-2015 - No
OtherPublic Notification Violation for NPDWR ViolationPublic Notice Rule and Revised PN RulePublic Notice61832Returned to Compliance12-FEB-2015 - No
MRFollow-up Or Routine LCR Tap M/RLead and Copper RuleLead and Copper Rule61830Returned to Compliance01-OCT-2014 - No
OtherConsumer Confidence Report Complete Failure to ReportConsumer Confidence RuleConsumer Confidence Rule61811Returned to Compliance01-JUL-2014 - No
TTFailure To Address DeficiencyGround Water RuleGroundwater Rule61812Returned to Compliance05-JAN-2014 - Yes
TTFailure To Address DeficiencyGround Water RuleGroundwater Rule61821Returned to Compliance10-OCT-2013 - Yes
OtherConsumer Confidence Report Complete Failure to ReportConsumer Confidence RuleConsumer Confidence Rule61810Returned to Compliance01-JUL-2013 - No
OtherPublic Notification Violation for NPDWR ViolationPublic Notice Rule and Revised PN RulePublic Notice61809Returned to Compliance13-OCT-2006 - No
OtherConsumer Confidence Report Inadequate ReportingConsumer Confidence RuleConsumer Confidence Rule61706Returned to Compliance01-OCT-2005 - No
OtherConsumer Confidence Report Inadequate ReportingConsumer Confidence RuleConsumer Confidence Rule61605Returned to Compliance01-JUL-2005 - No
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleChlorine61806Returned to Compliance01-JAN-200531-MAR-2005No
OtherConsumer Confidence Report Inadequate ReportingConsumer Confidence RuleConsumer Confidence Rule61304Returned to Compliance01-JUL-2004 - No
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleChlorine61504Returned to Compliance01-JAN-200431-MAR-2004No
OtherConsumer Confidence Report Complete Failure to ReportConsumer Confidence RuleConsumer Confidence Rule60002Known01-JUL-200230-SEP-2002No
OtherConsumer Confidence Report Complete Failure to ReportConsumer Confidence RuleConsumer Confidence Rule61402Returned to Compliance01-JUL-2002 - No
MRMonitoring, RegularInorganic ChemicalsAsbestos61848Returned to Compliance01-JAN-200231-DEC-2010No
OtherConsumer Confidence Report Complete Failure to ReportConsumer Confidence RuleConsumer Confidence Rule100Returned to Compliance19-OCT-199906-JUN-2000No
OtherConsumer Confidence Report Complete Failure to ReportConsumer Confidence RuleConsumer Confidence Rule104Returned to Compliance19-OCT-1999 - No
MRMonitoring, Routine Minor (TCR)Total Coliform RuleColiform (TCR)6699Returned to Compliance01-OCT-199831-OCT-1998No
MRMonitoring, Routine Minor (TCR)Total Coliform RuleColiform (TCR)37296Returned to Compliance01-SEP-199630-SEP-1996No
MRMonitoring, Routine Minor (TCR)Total Coliform RuleColiform (TCR)37196Returned to Compliance01-JUL-199631-JUL-1996No
MCLMaximum Contaminant Level Violation, Monthly (TCR)Total Coliform RuleColiform (TCR)61294Returned to Compliance01-AUG-199431-AUG-1994Yes
MCLMaximum Contaminant Level Violation, Acute (TCR)Total Coliform RuleColiform (TCR)61194Returned to Compliance01-JUL-199431-JUL-1994Yes
  • 1 - 38 of 38

Enforcement Actions


Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
9061847SIFState Public Notification received01-DEC-2025State -
9161846SIFState Public Notification received01-DEC-2025State -
8261843SOXState Compliance achieved26-SEP-2025State -
8361844SOXState Compliance achieved26-SEP-2025State -
8161850SOXState Compliance achieved25-SEP-2025State -
7961849SIEState Public Notification requested29-AUG-2025State -
7661848SIAState Violation/Reminder Notice18-JUL-2025State -
7161845SIEState Public Notification requested27-FEB-2025State -
6761842SIFState Public Notification received23-MAR-2022State -
6261837SOXState Compliance achieved24-FEB-2022State -
6061841SOXState Compliance achieved02-NOV-2020State -
5661840SIFState Public Notification received07-MAY-2020State -
4961838SOXState Compliance achieved25-SEP-2018StateThis PN violation is being returned to compliance based on the fact that the underlying violation is greater than a year old and the underlying violation has been resolved by the water system. This is being done as per NMED-DWB Staff Guidance
4661812SIFState Public Notification received01-MAY-2018State -
4861821SIFState Public Notification received01-MAY-2018State -
4761833SOXState Compliance achieved01-MAY-2018State -
4561832SOXState Compliance achieved01-MAY-2018State -
3561834SOXState Compliance achieved14-OCT-2016State -
4061831SOXState Compliance achieved14-OCT-2016State -
3161830SFLState Administrative/Compliance Order without penalty issued11-SEP-2015State -
1261811SOXState Compliance achieved09-FEB-2015State -
361810SIAState Violation/Reminder Notice08-AUG-2013State -
261294SOXState Compliance achieved29-NOV-2011StateSOX'd due to time and system being in compliance with TCR
237296SOXState Compliance achieved29-NOV-2011StateSOX'd due to time and system being in compliance with TCR
237196SOXState Compliance achieved29-NOV-2011StateSOX'd due to time and system being in compliance with TCR
26699SOXState Compliance achieved29-NOV-2011StateSOX'd due to time and system being in compliance with TCR
261194SOXState Compliance achieved29-NOV-2011StateSOX'd due to time and system being in compliance with TCR
17730761809SOXState Compliance achieved22-OCT-2010State -
17730661806SIEState Public Notification requested12-OCT-2005State -
17700661706SOXState Compliance achieved11-OCT-2005StateCorrections and certification received
17700661605SOXState Compliance achieved11-OCT-2005StateCorrections and certification received
17620461304SOXState Compliance achieved27-SEP-2004State -
17650461504SOXState Compliance achieved14-SEP-2004State -
17590261402SOXState Compliance achieved30-SEP-2002State -
9000105100EOXFederal Compliance achieved06-JUN-2000ODSWeb -
1E00104EFJFederal issued Formal Notice of Violation05-MAY-2000ODSWeb -
  • 1 - 36 of 36

PWS Facilities


All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
WELL 2B13989YesWell Ground waterPermanentActive
WELL #1 (WILLARD WELL #2)2893YesWell Ground waterPermanentInactive
WELL #42892YesWell Ground waterPermanentInactive
WILLARD 1 WELL2894YesWell Ground waterPermanentActive
COOPER WELL2891YesWell Ground waterPermanentActive
DIST5565NoDistribution System/Zone - - Active
COOPER BOOSTER STATION13688NoPump Facility - - Active
CITY PARK BOOSTER STATION13689NoPump Facility - - Active
ENTRY POINT #17605NoSampling Station - - Inactive
COOPER STORAGE TANK266NoStorage - - Active
HIGH SCHOOL STORAGE TANK267NoStorage - - Active
CITY PARK STORAGE TANK9800NoStorage - - Active
STORAGE TANK #1265NoStorage - - Inactive
CITY PARK TREATMENT UNIT12335NoTreatment Plant - - Active
TREATMENT PLANT #11104NoTreatment Plant - - Inactive
TREATMENT PLANT #31142NoTreatment Plant - - Inactive
TREATMENT PLANT #41143NoTreatment Plant - - Inactive
TREATMENT PLANT #2572NoTreatment Plant - - Inactive
  • 1 - 18 of 18

PWS Treatment Processes


Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
TREATMENT PLANT #31142Hypochlorination, PostDisinfection
TREATMENT PLANT #41143Hypochlorination, PostDisinfection
CITY PARK TREATMENT UNIT12335Hypochlorination, PostDisinfection
TREATMENT PLANT #2572Hypochlorination, PostDisinfection
  • 1 - 4 of 4

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.