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Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDCA1910225
PWS NameLAS VIRGENES MWD
PWS TypeCommunity water system
Owner TypeLocal government
Primary SourceSurface water
Primacy TypeState
Is Wholesaler?No
Population Served72602
County ServedLos Angeles

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
MRMonitoring, Routine (IDSE)Stage 2 Disinfectants and Disinfection Byproducts RuleTTHM9307004Returned to Compliance01-APR-201330-JUN-2013No
MRMonitoring, Routine (IDSE)Stage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)9307005Returned to Compliance01-APR-201330-JUN-2013No
TTTreatment Technique (SWTR and GWR)Surface Water Treatment RuleSurface Water Treatment Rule9307003Returned to Compliance01-SEP-199330-SEP-1993Yes
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Enforcement Actions


Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
94070089307004SOXState Compliance achieved23-JUL-2013State -
94070089307005SOXState Compliance achieved23-JUL-2013State -
94070059307003SOXState Compliance achieved24-SEP-1993State#04-054 SWTR INACTIVATION REQUIREMENT AND OPERATOR CERTIFICATIO
  • 1 - 3 of 3

PWS Facilities


All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
MWD CONNECTION - TREATED28608YesConsecutive ConnectionSurface waterPermanentActive
WESTLAKE RESERVOIR28610YesIntakeSurface waterPermanentActive
WESTLAKE FILTRATION PLANT INFLUENT28609YesIntakeSurface waterPermanentActive
DISTRIBUTION SYSTEM28607NoDistribution System/Zone - - Active
CALABASAS70894NoStorage - - Active
DARDENNE70895NoStorage - - Active
EQUESTRIAN70896NoStorage - - Active
JED SMITH 170897NoStorage - - Active
JED SMITH 270898NoStorage - - Active
KIMBERLY70899NoStorage - - Active
LATIGO70900NoStorage - - Active
LOWER OAKS70901NoStorage - - Active
MCCOY70902NoStorage - - Active
MORRISON70903NoStorage - - Active
MULWOOD70904NoStorage - - Active
OAKRIDGE70905NoStorage - - Active
RANCH VIEW70906NoStorage - - Active
SADDLE PEAK70907NoStorage - - Active
SEMINOLE 170908NoStorage - - Active
SEMINOLE 270909NoStorage - - Active
TWIN LAKES 170910NoStorage - - Active
TWIN LAKES 270911NoStorage - - Active
UPPER OAKS70912NoStorage - - Active
UPPER TWIN LAKES70913NoStorage - - Active
WOOLSEY70914NoStorage - - Active
WARNER 170915NoStorage - - Active
WARNER 270916NoStorage - - Active
TORCHWOOD70917NoStorage - - Active
LAS VIRGENES RESERVOIR70918NoStorage - - Active
SADDLETREE70919NoStorage - - Active
WESTLAKE FILTRATION PLANT EFFLUENT4910NoTreatment Plant - - Active
  • 1 - 31 of 31

PWS Treatment Processes


Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
WESTLAKE FILTRATION PLANT EFFLUENT4910Filtration, Diatomaceous EarthParticulate removal
WESTLAKE FILTRATION PLANT EFFLUENT4910ChloraminesDisinfection
  • 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.