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Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDCA2810012
PWS NamePACIFIC UNION COLLEGE
PWS TypeCommunity water system
Owner TypePrivate
Primary SourceGround water
Primacy TypeState
Is Wholesaler?No
Population Served1958
County ServedNapa

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 Major (TCR)Total Coliform RuleColiform (TCR)1203004Returned to Compliance01-APR-201230-APR-2012No
MRMonitoring, Routine Major (TCR)Total Coliform RuleColiform (TCR)1003003Returned to Compliance01-MAR-201031-MAR-2010No
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)503002Returned to Compliance01-JAN-200531-DEC-2005No
MRMonitoring, Routine Major (TCR)Total Coliform RuleColiform (TCR)403001Returned to Compliance01-APR-200430-APR-2004No
MRInitial Tap Sampling for Pb and CuLead and Copper RuleLead and Copper Rule95V0001Returned to Compliance01-JUL-199301-MAR-2000No
  • 1 - 5 of 5

Enforcement Actions


Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
12030071003003SOXState Compliance achieved02-JAN-2018State -
12030071203004SOXState Compliance achieved02-JAN-2018State -
1203006503002SOXState Compliance achieved07-JUL-2016State -
1203008403001SOXState Compliance achieved30-MAY-2004StateThis TCR violation has been closed with this SOX enforcement record due to rTCR implementation on 4/1/2016.
00E000195V0001EOXFederal Compliance achieved01-MAR-2000ODSWeb -
  • 1 - 5 of 5

PWS Facilities


All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
WELL 07 - INACTIVE21777YesWell Ground waterOtherInactive
WELL 0612389YesWell Ground waterPermanentActive
WELL 0512388YesWell Ground waterPermanentActive
WELL 0412387YesWell Ground waterPermanentActive
WELL 0312377YesWell Ground waterPermanentActive
WELL 01 - INACTIVE23373YesWell Ground waterOtherInactive
DISTRIBUTION SYSTEM29437NoDistribution System/Zone - - Active
TRUMBLE BOOSTER PUMP66807NoPump Facility - - Active
TANK 166803NoStorage - - Active
TANK 266804NoStorage - - Active
TANK 366805NoStorage - - Active
TANK 466806NoStorage - - Active
TREATMENT PLANT CL - WELLS 3, 4, 5, & 65862NoTreatment Plant - - Active
TREATMENT PLANT NAOH - WELLS 3, 4, & 566801NoTreatment Plant - - Active
TREATMENT PLANT NAOH - WELL 666802NoTreatment Plant - - Active
  • 1 - 15 of 15

PWS Treatment Processes


Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
TREATMENT PLANT CL - WELLS 3, 4, 5, & 658624-Log Treatment of VirusesDisinfection
TREATMENT PLANT CL - WELLS 3, 4, 5, & 65862Hypochlorination, PostDisinfection
TREATMENT PLANT NAOH - WELLS 3, 4, & 566801pH AdjustmentCorrosion control
TREATMENT PLANT NAOH - WELL 666802pH AdjustmentCorrosion control
  • 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.