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Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDCA1910169
PWS NameWALNUT PARK MUTUAL WATER CO.
PWS TypeCommunity water system
Owner TypePrivate
Primary SourceGround water
Primacy TypeState
Is Wholesaler?No
Population Served16180
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
OtherNotification, StateVolatile Organic ChemicalsCarbon tetrachloride9807005Returned to Compliance01-JUN-202314-MAR-2024No
MRFollow-up Or Routine LCR Tap M/RLead and Copper RuleLead and Copper Rule9807004Returned to Compliance01-OCT-2019 - No
MONMonitoring, Routine (RTCR)Revised Total Coliform RuleRevised Total Coliform Rule9807002Returned to Compliance01-OCT-201631-OCT-2016No
MCLMaximum Contaminant Level Violation, Monthly (TCR)Total Coliform RuleColiform (TCR)9807001Returned to Compliance01-JAN-199831-JAN-1998Yes
  • 1 - 4 of 4

Enforcement Actions


Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
98070179807005SOXState Compliance achieved14-MAR-2024Stateno comments from MA, 05/14/2024.
98070159807004SOXState Compliance achieved01-AUG-2020StateFailed to collect the total number of 30 samples, only sampled 17 samples within the monitoring period, also submitted the report late to the Department.
98070109807002SOXState Compliance achieved13-DEC-2016StateNotice of Violation issued on 11/2/2016. RTC on 12/12/2016 per DC 12/13/2016.
98070089807001SOXState Compliance achieved20-MAR-1998StateENF_NO:04-07-98C-010; ISSUED TWO DIRECTIVES
  • 1 - 4 of 4

PWS Facilities


All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
MWD CONNECTION - TREATED28516YesConsecutive ConnectionSurface waterEmergencyActive
WELL 1223997YesWell Ground waterPermanentActive
WELL 1113313YesWell Ground waterPermanentActive
WELL 1013312YesWell Ground waterPermanentActive
WELL 09 - DESTROYED18819YesWell Ground waterOtherInactive
WELL 08 - DESTROYED18818YesWell Ground waterOtherInactive
DISTRIBUTION SYSTEM28515NoDistribution System/Zone - - Active
RESERVOIR 470593NoStorage - - Active
RESERVOIR 570594NoStorage - - Active
WELL 10 - CHLORINATION662NoTreatment Plant - - Active
WELL 11 - CHLORINATION663NoTreatment Plant - - Active
WELL 12 - CHLORINATION67798NoTreatment Plant - - Active
  • 1 - 12 of 12

PWS Treatment Processes


Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
WELL 10 - CHLORINATION662Hypochlorination, PostDisinfection
WELL 11 - CHLORINATION663Hypochlorination, PostDisinfection
WELL 12 - CHLORINATION67798Hypochlorination, PostDisinfection
  • 1 - 3 of 3

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.