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Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDCA2410001
PWS NameCITY OF ATWATER
PWS TypeCommunity water system
Owner TypeLocal government
Primary SourceGround water
Primacy TypeState
Is Wholesaler?No
Population Served29479
County ServedMerced

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, RegularNitrate RuleNitrate9611006Returned to Compliance01-JAN-201431-DEC-2014No
MRMonitoring, RegularNitrate RuleNitrate9611005Returned to Compliance01-JAN-201331-DEC-2013No
MRFollow-up Or Routine LCR Tap M/RLead and Copper RuleLead and Copper Rule511005Returned to Compliance01-JAN-2005 - No
MCLMaximum Contaminant Level Violation, Monthly (TCR)Total Coliform RuleColiform (TCR)211003Returned to Compliance01-FEB-200228-FEB-2002Yes
MCLMaximum Contaminant Level Violation, Monthly (TCR)Total Coliform RuleColiform (TCR)111002Returned to Compliance01-NOV-200030-NOV-2000Yes
MRFollow-up Or Routine LCR Tap M/RLead and Copper RuleLead and Copper Rule9611004Returned to Compliance02-JAN-1996 - No
MCLMaximum Contaminant Level Violation, Monthly (TCR)Total Coliform RuleColiform (TCR)9211001Returned to Compliance01-SEP-199230-SEP-1992Yes
  • 1 - 7 of 7

Enforcement Actions


Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
95110099611004SOXState Compliance achieved03-NOV-2015State2004 LCR monitoring results rec'vd in 1/1/2006 per LCR summary report.
95110089611006SOXState Compliance achieved20-OCT-2015State -
95110069611005SOXState Compliance achieved21-JUL-2014State03-11-14E-014
711010511005SOXState Compliance achieved28-DEC-2005StateENF_NO:03-11-05C-032; REC'D DATA FOR PAST SAMPLES
9511013211003SOXState Compliance achieved28-MAR-2002StateThis TCR violation has been closed with this SOX enforcement record due to rTCR implementation on 4/1/2016.
9511012111002SOXState Compliance achieved30-DEC-2000StateThis TCR violation has been closed with this SOX enforcement record due to rTCR implementation on 4/1/2016.
93110019211001SFJState Formal Notice of Violation issued03-NOV-1992StateSTANDARD CITATION PN REQUIRED
  • 1 - 7 of 7

PWS Facilities


All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
WELL 09 - RAW INACTIVE14940YesWell Ground waterOtherInactive
WELL 20A - RAW74869YesWell Ground waterPermanentActive
WELL 21 - RAW14968YesWell Ground waterPermanentActive
WELL 13 - RAW14963YesWell Ground waterPermanentActive
WELL 14 - RAW14961YesWell Ground waterPermanentActive
WELL 15 - RAW14953YesWell Ground waterPermanentActive
WELL 16 - RAW14952YesWell Ground waterPermanentActive
WELL 17 - RAW14951YesWell Ground waterPermanentActive
WELL 18 - RAW14950YesWell Ground waterPermanentActive
WELL 19 - RAW14949YesWell Ground waterPermanentActive
WELL 22 - PENDINGCA2410001033YesWell Ground waterOtherInactive
WELL 08 - ABANDONEDCA2410001008YesWell Ground waterOtherInactive
WELL 06 - INACTIVECA2410001006YesWell Ground waterOtherInactive
WELL 04 - ABANDONEDCA2410001004YesWell Ground waterOtherInactive
WELL 04 - DESTROYED8343YesWell Ground waterOtherInactive
WELL 08 - DESTROYED8334YesWell Ground waterOtherInactive
WELL 06 - DESTROYED22026YesWell Ground waterOtherInactive
WELL 05 - DESTROYED19560YesWell Ground waterOtherInactive
WELL 01 - DESTROYED19549YesWell Ground waterOtherInactive
WELL 02 - DESTROYED19548YesWell Ground waterOtherInactive
WELL 03 - DESTROYED19547YesWell Ground waterOtherInactive
WELL 07 - DESTROYED19543YesWell Ground waterOtherInactive
WELL 10 - DESTROYED19540YesWell Ground waterOtherInactive
WELL 11 - DESTROYED19539YesWell Ground waterOtherInactive
WELL 12 - DESTROYED19538YesWell Ground waterOtherInactive
WELL 20 - RAW INACTIVE14948YesWell Ground waterOtherInactive
DISTRIBUTION SYSTEM29183NoDistribution System/Zone - - Active
CENTRAL PLNT 13,14,17-RAW INF69761NoSampling Station - - Active
WELL 15 - TRT GAC CL3966NoTreatment Plant - - Active
WELL 16 - TRT GAC CL3967NoTreatment Plant - - Active
WELL 18 - TRT GAC CL3969NoTreatment Plant - - Active
WELL 19 - TRT GAC CL3970NoTreatment Plant - - Active
WELL 21 - TRT CL3972NoTreatment Plant - - Active
CENTRAL PLANT-TRT GAC CL69547NoTreatment Plant - - Active
WELL 20A - TRT GAC CL74992NoTreatment Plant - - Active
WELL 14 - TRT CL INAC3953NoTreatment Plant - - Inactive
WELL 13 - TRT CL INAC3964NoTreatment Plant - - Inactive
WELL 17 - TRT CL INAC3968NoTreatment Plant - - Inactive
WELL 20 - TRT CL INACTIVE3971NoTreatment Plant - - Inactive
WELL 09 - TRT CL GAC INAC3975NoTreatment Plant - - Inactive
WELL 06 - TRT CL INACTIVE6799NoTreatment Plant - - Inactive
  • 1 - 41 of 41

PWS Treatment Processes


Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
WELL 14 - TRT CL INAC3953Gaseous Chlorination, PreDisinfection
WELL 13 - TRT CL INAC3964Gaseous Chlorination, PreDisinfection
WELL 15 - TRT GAC CL3966Activated Carbon, GranularOrganics removal
WELL 15 - TRT GAC CL3966Hypochlorination, PostDisinfection
WELL 16 - TRT GAC CL3967Activated Carbon, GranularOrganics removal
WELL 16 - TRT GAC CL3967Hypochlorination, PostDisinfection
WELL 17 - TRT CL INAC3968Gaseous Chlorination, PreDisinfection
WELL 18 - TRT GAC CL3969Activated Carbon, GranularOrganics removal
WELL 18 - TRT GAC CL3969Hypochlorination, PostDisinfection
WELL 19 - TRT GAC CL3970Activated Carbon, GranularOrganics removal
WELL 19 - TRT GAC CL3970Hypochlorination, PostDisinfection
WELL 20 - TRT CL INACTIVE3971Gaseous Chlorination, PreDisinfection
WELL 21 - TRT CL3972Hypochlorination, PostDisinfection
WELL 09 - TRT CL GAC INAC3975Activated Carbon, GranularOrganics removal
WELL 09 - TRT CL GAC INAC3975Gaseous Chlorination, PreDisinfection
CENTRAL PLANT-TRT GAC CL69547Activated Carbon, GranularOrganics removal
CENTRAL PLANT-TRT GAC CL69547Hypochlorination, PostDisinfection
  • 1 - 17 of 17

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.