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Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDCA0610002
PWS NameCITY OF COLUSA
PWS TypeCommunity water system
Owner TypeLocal government
Primary SourceGround water
Primacy TypeState
Is Wholesaler?No
Population Served6447
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
MONMonitoring, Routine (RTCR)Revised Total Coliform RuleRevised Total Coliform Rule9421005Returned to Compliance01-MAR-202231-MAR-2022No
MONMonitoring, Routine (RTCR)Revised Total Coliform RuleRevised Total Coliform Rule9421004Returned to Compliance01-JAN-202231-MAR-2022No
MONMonitoring, Routine (RTCR)Revised Total Coliform RuleRevised Total Coliform Rule9421002Returned to Compliance01-SEP-201630-SEP-2016No
MCLMaximum Contaminant Level Violation, Monthly (TCR)Total Coliform RuleColiform (TCR)9421001Returned to Compliance01-DEC-199331-DEC-1993Yes
  • 1 - 4 of 4

Enforcement Actions


Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
95210129421004SOXState Compliance achieved08-JUN-2022State -
95210129421005SOXState Compliance achieved08-JUN-2022State -
95210089421002SOXState Compliance achieved16-JUL-2019State -
95210069421001SOXState Compliance achieved21-AUG-1995StateENF #9402003 OK
  • 1 - 4 of 4

PWS Facilities


All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
WELL 02 - 8TH & WEBSTER11851YesWell Ground waterEmergencyActive
WELL 06 - 10TH & J16317YesWell Ground waterPermanentActive
WELL 03 - 6TH & FREMONT11850YesWell Ground waterPermanentActive
WELL 04 - COLUSA AVE.11848YesWell Ground waterPermanentActive
WELL 05 - 3RD & LARSEN11845YesWell Ground waterPermanentActive
WELL 01 - 9TH & MAIN - WEST - DESTROYED18461YesWell Ground waterOtherInactive
WELL 07 - PARK - DESTROYED18432YesWell Ground waterOtherInactive
DISTRIBUTION SYSTEM25027NoDistribution System/Zone - - Active
WELL 05 - TREATED XCLD4628NoTreatment Plant - - Active
WELL 04 - TREATED XCLD4641NoTreatment Plant - - Active
WELL 03 - TREATED XCLD4642NoTreatment Plant - - Active
WELL 02 - TREATED XCLD4643NoTreatment Plant - - Active
  • 1 - 12 of 12

PWS Treatment Processes


Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
WELL 05 - TREATED XCLD4628Hypochlorination, PreDisinfection
WELL 04 - TREATED XCLD4641Hypochlorination, PreDisinfection
WELL 03 - TREATED XCLD4642Hypochlorination, PreDisinfection
WELL 02 - TREATED XCLD4643Hypochlorination, PreDisinfection
  • 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.