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Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDCA1910234
PWS NameWALNUT VALLEY WATER DISTRICT
PWS TypeCommunity water system
Owner TypeLocal government
Primary SourceSurface water purchased
Primacy TypeState
Is Wholesaler?No
Population Served100941
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
MCLMaximum Contaminant Level Violation, Monthly (TCR)Total Coliform RuleColiform (TCR)9415002Returned to Compliance01-SEP-199430-SEP-1994Yes
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Enforcement Actions

Enforcement Actions

PWS Facilities

All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
MWD CONN PM-10 (ORANGE) - TREATED28612YesConsecutive ConnectionSurface waterPermanentActive
MWD CONN PM-12 (ORANGE) -TREATED28613YesConsecutive ConnectionSurface waterPermanentActive
MWD CONN PM-15 (WEYMOUTH) - TREATED28614YesConsecutive ConnectionSurface waterPermanentActive
MWD CONNECTION PM-21 (MIRAMAR)- TREATED28615YesConsecutive ConnectionSurface waterPermanentActive
TVMWD CONNECTION PM-24 - TREATED28616YesConsecutive ConnectionSurface waterPermanentActive
DISTRIBUTION SYSTEM28611NoDistribution System/Zone - - Active
AMBUSHERS TANK73768NoStorage - - Active
ARBOR RIDGE A TANK73769NoStorage - - Active
ARBOR RIDGE B TANK73770NoStorage - - Active
ARMITOS A TANK73771NoStorage - - Active
ARMITOS B TANK73772NoStorage - - Active
BREA CANYON A TANK73773NoStorage - - Active
BREA CANYON B TANK73774NoStorage - - Active
CHESTNUT HILL TANK73775NoStorage - - Active
PIONEER TANK73776NoStorage - - Active
PARKER CANYON TANK73777NoStorage - - Active
EASTGATE A TANK73778NoStorage - - Active
EASTGATE B TANK73779NoStorage - - Active
ELDERTREE A TANK (EAST)73780NoStorage - - Active
ELDERTREE B TANK (WEST)73781NoStorage - - Active
HILLRISE A TANK (NORTH)73782NoStorage - - Active
HILLRISE B TANK (SOUTH)73783NoStorage - - Active
PATHFINDER A TANK (WEST)73784NoStorage - - Active
PATHFINDER B TANK (EAST)73785NoStorage - - Active
RIDGECREST TANK73786NoStorage - - Active
RIDGELINE A TANK73787NoStorage - - Active
RIDGELINE B TANK73788NoStorage - - Active
RIDGELINE C TANK73789NoStorage - - Active
SYLVAN GLEN TANK73790NoStorage - - Active
TERMINAL STORAGE A73791NoStorage - - Active
TERMINAL STORAGE B73792NoStorage - - Active
TERMINAL STORAGE C73793NoStorage - - Active
TERMINAL STORAGE D73794NoStorage - - Active
TERMINAL STORAGE E73795NoStorage - - Active
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PWS Treatment Processes

Treatment Processes

No treatment process(es) found. EPA has no record of treatment process(es) reported by the primacy agency for this water system.
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.