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Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDCA2210515
PWS NameYOSEMITE NPS-EL PORTAL
PWS TypeCommunity water system
Owner TypeFederal government
Primary SourceGround water
Primacy TypeState
Is Wholesaler?No
Population Served635
County ServedMariposa

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
OtherConsumer Confidence Report Complete Failure to ReportConsumer Confidence RuleConsumer Confidence Rule711008Returned to Compliance01-JUL-2007 - No
MRInitial Tap Sampling for Pb and CuLead and Copper RuleLead and Copper Rule511006Returned to Compliance02-JUL-2005 - No
OtherConsumer Confidence Report Complete Failure to ReportConsumer Confidence RuleConsumer Confidence Rule511007Returned to Compliance01-JUL-2005 - No
MRInitial Tap Sampling for Pb and CuLead and Copper RuleLead and Copper Rule511004Returned to Compliance02-JAN-2005 - No
MRInitial Tap Sampling for Pb and CuLead and Copper RuleLead and Copper Rule411005Returned to Compliance02-JUL-2004 - No
MRInitial Tap Sampling for Pb and CuLead and Copper RuleLead and Copper Rule411003Returned to Compliance02-JAN-2004 - No
MCLMaximum Contaminant Level Violation, Monthly (TCR)Total Coliform RuleColiform (TCR)9411002Returned to Compliance01-FEB-199428-FEB-1994Yes
MCLMaximum Contaminant Level Violation, Monthly (TCR)Total Coliform RuleColiform (TCR)9211001Returned to Compliance01-JUL-199231-JUL-1992Yes
OtherNotification, PublicMiscellaneous Other Rules - 8010069Known30-SEP-198029-OCT-1980No
  • 1 - 9 of 9

Enforcement Actions


Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
811011711008SOXState Compliance achieved09-NOV-2007StateENF_NO:03-11-07C-014; DISTRIBUTE AND SUBMIT 2006 CCR
811010511007SOXState Compliance achieved14-NOV-2006StateENF_NO:03-11-06C-013; DISTRIBUTE AND SUBMIT 2006 CCR
711007411003SOXState Compliance achieved28-DEC-2005StateENF_NO:03-11-05C-029; 2ND 6 COLLECTED IN 2006
711007411005SOXState Compliance achieved28-DEC-2005StateENF_NO:03-11-05C-029; 2ND 6 COLLECTED IN 2006
711007511006SOXState Compliance achieved28-DEC-2005StateENF_NO:03-11-05C-029; 2ND 6 COLLECTED IN 2006
711007511004SOXState Compliance achieved28-DEC-2005StateENF_NO:03-11-05C-029; 2ND 6 COLLECTED IN 2006
95110049411002SOXState Compliance achieved10-MAR-1994State -
93110019211001SFJState Formal Notice of Violation issued03-SEP-1992StateNO DIRECTIVE CITATION
  • 1 - 8 of 8

PWS Facilities


All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
WELL 04 - RAW STBY14977YesWell Ground waterEmergencyActive
WELL 02 - RAW14979YesWell Ground waterPermanentActive
WELL 03 - RAW14978YesWell Ground waterPermanentActive
WELL 05 - RAW14976YesWell Ground waterPermanentActive
WELL 06 - RAW14975YesWell Ground waterPermanentActive
WELL 07 - RAW14974YesWell Ground waterPermanentActive
DISTRIBUTION SYSTEM28887NoDistribution System/Zone - - Active
WELL 07 - TRT CL & CCT3999NoTreatment Plant - - Active
WELL 02 - TRT CL & CCT4007NoTreatment Plant - - Active
WELL 03 - TRT CL & CCT4008NoTreatment Plant - - Active
WELL 05 - TRT CL & CCT4010NoTreatment Plant - - Active
WELL 06 - TRT CL & CCT4012NoTreatment Plant - - Active
WELL 04 - TRT CL & CCT4021NoTreatment Plant - - Active
  • 1 - 13 of 13

PWS Treatment Processes


Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
WELL 07 - TRT CL & CCT3999Inhibitor, OrthophosphateCorrosion control
WELL 07 - TRT CL & CCT3999Hypochlorination, PostDisinfection
WELL 02 - TRT CL & CCT4007Inhibitor, OrthophosphateCorrosion control
WELL 02 - TRT CL & CCT4007Hypochlorination, PostDisinfection
WELL 03 - TRT CL & CCT4008Inhibitor, OrthophosphateCorrosion control
WELL 03 - TRT CL & CCT4008Hypochlorination, PostDisinfection
WELL 05 - TRT CL & CCT4010Inhibitor, OrthophosphateCorrosion control
WELL 05 - TRT CL & CCT4010Hypochlorination, PostDisinfection
WELL 06 - TRT CL & CCT4012Inhibitor, OrthophosphateCorrosion control
WELL 06 - TRT CL & CCT4012Hypochlorination, PostDisinfection
WELL 04 - TRT CL & CCT4021Inhibitor, OrthophosphateCorrosion control
WELL 04 - TRT CL & CCT4021Hypochlorination, PostDisinfection
  • 1 - 12 of 12

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.