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Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDCA2710019
PWS NameCWSC OAK HILLS
PWS TypeCommunity water system
Owner TypePrivate
Primary SourceGround water
Primacy TypeState
Is Wholesaler?No
Population Served3161
County ServedMonterey

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 and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleTTHM505004Returned to Compliance01-JAN-200531-DEC-2005No
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)505005Returned to Compliance01-JAN-200531-DEC-2005No
MCLMaximum Contaminant Level Violation, AverageVolatile Organic Chemicals1,1-Dichloroethylene9605002Returned to Compliance10-APR-199610-JUN-1996Yes
MCLMaximum Contaminant Level Violation, Single SampleVolatile Organic Chemicals1,1-Dichloroethylene9605001Returned to Compliance01-APR-199630-JUN-1996Yes
MRInitial Tap Sampling for Pb and CuLead and Copper RuleLead and Copper Rule95V0001Returned to Compliance01-JUL-199304-APR-2000No
  • 1 - 5 of 5

Enforcement Actions


Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
905004505004SOXState Compliance achieved03-APR-2006StateENF_NO:FED. DBP VIOL.; COMPLIANCE FEDERAL DBP VIOL. LTR-NO DBPS MONITORED IN 2005
905004505005SOXState Compliance achieved03-APR-2006StateENF_NO:FED. DBP VIOL.; COMPLIANCE FEDERAL DBP VIOL. LTR-NO DBPS MONITORED IN 2005
008989995V0001SOXState Compliance achieved04-APR-2000ODSWeb -
97050029605002SOXState Compliance achieved01-JUL-1997StateCompliance met for Citation dated 10/23/96
10050059605001SIAState Violation/Reminder Notice12-JUL-1996StateENF_NO:NOV ISSUED; NOV ISSUED FOR MCL FOR 1,1 DICHLOROETHYLENE-WELL 202-01 INACTIVATED IN 1996
  • 1 - 5 of 5

PWS Facilities


All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
WELL 201-01 - RAW - STANDBY11989YesWell Ground waterEmergencyActive
WELL 205-01 RAW55204YesWell Ground waterPermanentActive
WELL 203-01 - RAW12022YesWell Ground waterPermanentActive
WELL 205-01 RAW - PENDINGCA2710019008YesWell Ground waterOtherInactive
WELL 202-01 - RAW - INACTIVE21405YesWell Ground waterOtherInactive
DISTRIBUTION SYSTEM29360NoDistribution System/Zone - - Active
WELL 201-01 - CL2 TREATMENT SBY- XCLD326NoTreatment Plant - - Active
WELL 203-01 - CL2 TREATMENT XCLD354NoTreatment Plant - - Active
WELL 205-01 CL2 TRTMNT - XCLD55205NoTreatment Plant - - Active
STATION 203-01 IX WTP62223NoTreatment Plant - - Active
STATION 205-01 IX WTP75081NoTreatment Plant - - Active
WELL 202-01 INACTIVE CL2 TRTMNT XCLD55165NoTreatment Plant - - Inactive
WELL 202-01 - GAC TREATMENT - INACTIVE6676NoTreatment Plant - - Inactive
WELL 205-01 CL2 TRTMNT - PENDING XCLDCA2710019009NoTreatment Plant - - Inactive
  • 1 - 14 of 14

PWS Treatment Processes


Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
WELL 201-01 - CL2 TREATMENT SBY- XCLD326Hypochlorination, PostDisinfection
WELL 203-01 - CL2 TREATMENT XCLD354Hypochlorination, PostDisinfection
WELL 202-01 INACTIVE CL2 TRTMNT XCLD55165Hypochlorination, PostDisinfection
WELL 205-01 CL2 TRTMNT - XCLD55205Hypochlorination, PostDisinfection
STATION 203-01 IX WTP62223Ion ExchangeInorganics removal
STATION 203-01 IX WTP62223Hypochlorination, PostDisinfection
STATION 205-01 IX WTP75081Hypochlorination, PostDisinfection
STATION 205-01 IX WTP75081Ion ExchangeInorganics removal
  • 1 - 8 of 8

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.