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Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDCA5010017
PWS NamePATTERSON, CITY OF
PWS TypeCommunity water system
Owner TypeLocal government
Primary SourceGround water
Primacy TypeState
Is Wholesaler?No
Population Served24977
County ServedStanislaus

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, AverageNitrate RuleNitrate710006Returned to Compliance01-JAN-200731-MAR-2007Yes
MCLMaximum Contaminant Level Violation, Monthly (TCR)Total Coliform RuleColiform (TCR)310005Returned to Compliance01-JUN-200330-JUN-2003Yes
MCLMaximum Contaminant Level Violation, Monthly (TCR)Total Coliform RuleColiform (TCR)9510001Returned to Compliance01-NOV-199430-NOV-1994Yes
OtherNotification, PublicMiscellaneous Other Rules - 8907965Known01-AUG-198931-AUG-1989No
  • 1 - 4 of 4

Enforcement Actions


Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
710018710006SOXState Compliance achieved07-JUL-2007StateENF_NO:03-10-07C-007; RETURNED TO COMPLIANCE
310010310005SOXState Compliance achieved07-AUG-2003StateENF_NO:03-10-03C-005; RETURNED TO COMPLIANCE
95100029510001SOXState Compliance achieved01-DEC-1994StateRETURNED TO COMPLIANCE
  • 1 - 3 of 3

PWS Facilities


All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
WELL NO. 06 - STANDBY13936YesWell Ground waterEmergencyActive
WELL NO. 0953312YesWell Ground waterPermanentActive
WELL NO. 0513946YesWell Ground waterPermanentActive
WELL NO. 1113932YesWell Ground waterPermanentActive
WELL NO. 0813931YesWell Ground waterPermanentActive
WELL NO. 0713930YesWell Ground waterPermanentActive
WELL 03 - TREATED - DESTROYEDCA5010017007YesWell Ground waterOtherInactive
WELL 04 - WARD AVECA5010017004YesWell Ground waterOtherInactive
WELL 03 - C STREET - DESTROYEDCA5010017003YesWell Ground waterOtherInactive
WELL 01 - SOUTH 5TH STREET - DESTROYEDCA5010017001YesWell Ground waterOtherInactive
WELL 03 - DESTROYED19356YesWell Ground waterOtherInactive
WELL 01 - DESTROYED19342YesWell Ground waterOtherInactive
WELL 03 - XCLD DESTROYED19340YesWell Ground waterOtherInactive
WELL 04 - INACTIVE- NON-POTABLE USE13934YesWell Ground waterOtherInactive
WELL NO. 02 - INACTIVE13933YesWell Ground waterEmergencyInactive
DISTRIBUTION SYSTEM33393NoDistribution System/Zone - - Active
WELL NO. 08 - XCLD2089NoTreatment Plant - - Active
WELL NO. 11 - XCLD2090NoTreatment Plant - - Active
WELL NO. 05 - XCLD2092NoTreatment Plant - - Active
WELL NO. 06 - STANDBY - XCLD2094NoTreatment Plant - - Active
WELL NO. 07 - XCLD2118NoTreatment Plant - - Active
WELL NO. 09 - XCLD53313NoTreatment Plant - - Active
WELL NO. 02 - XCLD - INACTIVE2091NoTreatment Plant - - Inactive
WELL 04 - XCLD INACTIVE - NON-POTABLE2093NoTreatment Plant - - Inactive
WELL 04 - TREATEDCA5010017010NoTreatment Plant - - Inactive
  • 1 - 25 of 25

PWS Treatment Processes


Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
WELL NO. 08 - XCLD2089Hypochlorination, PostDisinfection
WELL NO. 11 - XCLD2090Hypochlorination, PostDisinfection
WELL NO. 02 - XCLD - INACTIVE2091Hypochlorination, PreDisinfection
WELL NO. 05 - XCLD2092Hypochlorination, PostDisinfection
WELL NO. 06 - STANDBY - XCLD2094Hypochlorination, PostDisinfection
WELL NO. 07 - XCLD2118Hypochlorination, PostDisinfection
WELL NO. 09 - XCLD53313Hypochlorination, PostDisinfection
  • 1 - 7 of 7

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.