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Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDCA2810002
PWS NameCALISTOGA, CITY OF
PWS TypeCommunity water system
Owner TypeLocal government
Primary SourceSurface water
Primacy TypeState
Is Wholesaler?No
Population Served5610
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
MRFollow-up Or Routine LCR Tap M/RLead and Copper RuleLead and Copper Rule9503021Open01-JUN-2025 - No
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)9503020Returned to Compliance01-JUL-202330-SEP-2023Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)9503019Returned to Compliance01-APR-202330-JUN-2023Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)9503018Returned to Compliance01-JAN-202331-MAR-2023Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)9503012Returned to Compliance01-APR-201830-JUN-2018Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)9503011Returned to Compliance01-JAN-201831-MAR-2018Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)9503010Returned to Compliance01-OCT-201731-DEC-2017Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)9503009Returned to Compliance01-JUL-201730-SEP-2017Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)9503007Returned to Compliance01-OCT-201631-DEC-2016Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM9503006Returned to Compliance01-OCT-201531-DEC-2015Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM9503004Returned to Compliance01-JUL-201530-SEP-2015Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM9503005Returned to Compliance01-APR-201530-JUN-2015Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM9503002Returned to Compliance01-JAN-201531-MAR-2015Yes
MRMonitoring, Repeat Major (TCR)Total Coliform RuleColiform (TCR)1103003Returned to Compliance01-JAN-201131-JAN-2011No
MCLMaximum Contaminant Level Violation, Monthly (TCR)Total Coliform RuleColiform (TCR)903002Returned to Compliance01-DEC-200831-DEC-2008Yes
TTTreatment Technique (SWTR and GWR)Surface Water Treatment RuleSurface Water Treatment Rule9503001Returned to Compliance01-JUN-199530-JUN-1995Yes
  • 1 - 16 of 16

Enforcement Actions

Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
96030199503021SFJState Formal Notice of Violation issued19-NOV-2025State -
96030189503019SOXState Compliance achieved07-FEB-2024State -
96030189503020SOXState Compliance achieved07-FEB-2024State -
96030189503018SOXState Compliance achieved07-FEB-2024State -
96030129503009SOXState Compliance achieved18-SEP-2018State -
96030129503012SOXState Compliance achieved18-SEP-2018State -
96030129503011SOXState Compliance achieved18-SEP-2018State -
96030129503010SOXState Compliance achieved18-SEP-2018State -
96030099503007SOXState Compliance achieved01-APR-2016State -
96030099503006SOXState Compliance achieved01-APR-2016State -
96030099503005SOXState Compliance achieved01-APR-2016State -
96030099503004SOXState Compliance achieved01-APR-2016State -
96030099503002SOXState Compliance achieved01-APR-2016State -
96030151103003SOXState Compliance achieved28-FEB-2011StateThis TCR violation has been closed with this SOX enforcement record due to rTCR implementation on 4/1/2016.
903006903002SFJState Formal Notice of Violation issued12-DEC-2009StateENF_NO:020308C050; CIT FOR BACT MCL VIOLATION
96030049503001SOXState Compliance achieved21-JUL-1995StateENF_NO:02-03-95C-108; STATE COMPLIANCE ACHEIVED (OX)
  • 1 - 16 of 16

PWS Facilities

All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
CITY OF NAPA INTERTIE71672YesConsecutive ConnectionSurface waterPermanentActive
WELL 03 - INACTIVE21876YesWell Ground waterOtherInactive
WELL 01 - INACTIVE21871YesWell Ground waterOtherInactive
KIMBALL RESERVOIR29412YesIntakeSurface waterPermanentActive
DISTRIBUTION SYSTEM29408NoDistribution System/Zone - - Active
DUNAWEAL PUMP STATION29410NoPump Facility - - Active
FIEGE WELL SITE - FINISHED29411NoSampling Station - - Inactive
KIMBALL TREATMENT PLANT EFFLUENT1714NoTreatment Plant - - Active
DUNAWEAL BOOSTER CHLORINATION TREATMENT55138NoTreatment Plant - - Active
  • 1 - 9 of 9

PWS Treatment Processes

Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
KIMBALL TREATMENT PLANT EFFLUENT1714Hypochlorination, PostDisinfection
KIMBALL TREATMENT PLANT EFFLUENT1714Filtration, Pressure SandParticulate removal
KIMBALL TREATMENT PLANT EFFLUENT1714SedimentationParticulate removal
KIMBALL TREATMENT PLANT EFFLUENT1714FlocculationParticulate removal
KIMBALL TREATMENT PLANT EFFLUENT1714CoagulationParticulate removal
DUNAWEAL BOOSTER CHLORINATION TREATMENT55138Hypochlorination, PostDisinfection
  • 1 - 6 of 6
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.