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Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDCA0610004
PWS NameCITY OF WILLIAMS
PWS TypeCommunity water system
Owner TypeLocal government
Primary SourceGround water
Primacy TypeState
Is Wholesaler?No
Population Served5538
County ServedColusa

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)9621004Returned to Compliance01-FEB-199629-FEB-1996Yes
MCLMaximum Contaminant Level Violation, Monthly (TCR)Total Coliform RuleColiform (TCR)9421003Returned to Compliance01-OCT-199331-OCT-1993Yes
MCLMaximum Contaminant Level Violation, Monthly (TCR)Total Coliform RuleColiform (TCR)9221001Returned to Compliance01-JUL-199231-JUL-1992Yes
  • 1 - 3 of 3

Enforcement Actions


Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
96210069621004SOXState Compliance achieved29-MAR-1996StateThis TCR violation has been closed with this SOX enforcement record due to rTCR implementation on 4/1/2016.
95210049221001SOXState Compliance achieved21-AUG-1995StateENF #9202001 & #9402002 OK
95210049421003SOXState Compliance achieved21-AUG-1995StateENF #9202001 & #9402002 OK
  • 1 - 3 of 3

PWS Facilities


All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
WELL 06 - VENICE - INACTIVE11844YesWell Ground waterInterimInactive
WELL 09 - RAW11791YesWell Ground waterPermanentInactive
WELL 11 - RAW74816YesWell Ground waterPermanentActive
WELL 10 - RAW11864YesWell Ground waterPermanentActive
WELL 08 - RAW11855YesWell Ground waterPermanentActive
WELL 01 - NORTH - DESTROYED18499YesWell Ground waterOtherInactive
WELL 04 - DESTROYED XCLD18496YesWell Ground waterOtherInactive
WELL 07 - VANN - DESTROYED18495YesWell Ground waterOtherInactive
WELL 03 - C STREET - INACTIVE24584YesWell Ground waterInterimInactive
DISTRIBUTION SYSTEM25029NoDistribution System/Zone - - Active
WELL 10 - TREATED4636NoTreatment Plant - - Active
WELL 08 - TREATED4637NoTreatment Plant - - Active
WELL 11 - TREATED74819NoTreatment Plant - - Active
WELL 09 - TREATED4635NoTreatment Plant - - Inactive
WELL 06 - TREATED4651NoTreatment Plant - - Inactive
  • 1 - 15 of 15

PWS Treatment Processes


Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
WELL 09 - TREATED4635Hypochlorination, PostDisinfection
WELL 10 - TREATED4636Hypochlorination, PostDisinfection
WELL 08 - TREATED4637SequestrationIron removal
WELL 06 - TREATED4651SequestrationIron removal
  • 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.