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Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDNN0400283
PWS NameInscription House-Navajo Mountain NTUA
PWS TypeCommunity water system
Owner TypeTribal Government
Primary SourceGround water
Primacy TypeTribal
Is Wholesaler?Yes
Population Served1368
County Served

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
OtherSample Siting Plan Errors (RTCR)Revised Total Coliform RuleRevised Total Coliform Rule04002835A800042016Open01-APR-2016 - No
MRFailure Submit IDSE/Subpart V Plan RptStage 2 Disinfectants and Disinfection Byproducts RuleStage 2 Disinfectants and Disinfection Byproducts Rule0400283350600102013Open01-OCT-2013 - No
MCLMaximum Contaminant Level Violation, Monthly (TCR)Total Coliform RuleColiform (TCR)040028322310052013Returned to Compliance01-MAY-201331-MAY-2013Yes
MRMonitoring, Routine Major (TCR)Total Coliform RuleColiform (TCR)0400283233100122012Returned to Compliance01-DEC-201231-DEC-2012No
MRMonitoring, Routine Major (TCR)Total Coliform RuleColiform (TCR)0400283233100112012Returned to Compliance01-NOV-201230-NOV-2012No
MRMonitoring, RegularNitrate RuleNitrite040028303104112010Returned to Compliance01-JAN-201031-DEC-2010No
MRMonitoring, RegularNitrate RuleNitrate040028303104012005Returned to Compliance01-JAN-200531-DEC-2005No
MRMonitoring, Repeat Major (TCR)Total Coliform RuleColiform (TCR)9630011Known31-JUL-199630-AUG-1996No
MRMonitoring, Repeat Major (TCR)Total Coliform RuleColiform (TCR)040028325310071996Returned to Compliance31-JUL-199630-AUG-1996No
  • 1 - 9 of 9

Enforcement Actions


Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
0400283FJ0828244138404002835A800042016SFJState Formal Notice of Violation issued28-AUG-2024StateNOV issued for failure to prepare a site sampling plan for total coliform.
0400283FJ022717329270400283350600102013SFJState Formal Notice of Violation issued27-FEB-2017StateNOV issued for failure to submit a site sampling plan for Stage 2 DBPs.
0400283FJ10031324672040028322310052013SFJState Formal Notice of Violation issued03-OCT-2013StateNOV issued for a MCL exceedance of the May 2013 bactee sample.
0400283OX011113235650400283233100122012SOXState Compliance achieved11-JAN-2013State2012 Dec TCR M/R. RTC, received NTUA TCR results on 01-11-2013.
0400283OX121112236470400283233100112012SOXState Compliance achieved11-DEC-2012State2012 Nov TCR M/R. RTC, received NTUA TCR results on 12-11-2012.
0400283OX10211112796040028303104112010SOXState Compliance achieved21-OCT-2011StateRTC, NTUA had issues with their analyzer. They have changed out the columns and had the equipment calibrated. PWSSP invalidated results. Pursuant to Section 408 (A)(1), the sampling frequency is specified by the Director.
0400283OX03/06/2006040028303104012005SOXState Compliance achieved06-MAR-2006StateNTUA submitted nitrate/nitrite results on 3/3/2006 (Lab#05-N58 and N59) and results were below the MCL.
0400283OX12/05/2000040028325310071996SOXState Compliance achieved05-DEC-2000StatePre Primacy.
  • 1 - 8 of 8

PWS Facilities


All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
02T-517 (Inscription House 2)0400283GW002YesWell Ground waterOtherInactive
Shadow Cave 20400283GW003YesWell Ground waterPermanentActive
02T-317 (Inscription House 1)0400283GW001YesWell Ground waterPermanentActive
02T-317 Entry Point (Inscription House 1)0400283EP001NoCommon Headers - - Active
Shadow Cave 2 Entry Point (Shadow Cave 2)0400283EP003NoCommon Headers - - Active
02T-517 Entry Point (Inscription House 2)0400283EP002NoCommon Headers - - Inactive
NN0400283 Inscription House Distribution System0400283DS001NoDistribution System/Zone - - Active
NN0400283 Inscription House North Distr System 20400283DS002NoDistribution System/Zone - - Active
Inscription House Booster Station North0400283PF001NoPump Facility - - Active
Broaden Mesa Booster Station0400283PF002NoPump Facility - - Active
Inscription House Main 1 Tank0400283ST001NoStorage - - Active
Inscription House North Extension Tank0400283ST002NoStorage - - Active
Dry Lake Tank0400283ST003NoStorage - - Active
Broad Mesa Tank0400283ST004NoStorage - - Active
Ridge Tank0400283ST005NoStorage - - Active
"Inscription House 2"0400283ST006NoStorage - - Active
02T-317 Treatment (Inscription House 1)0400283TP001NoTreatment Plant - - Active
02T-517 Treatment (Inscription House 2)0400283TP002NoTreatment Plant - - Inactive
  • 1 - 18 of 18

PWS Treatment Processes


Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
02T-317 Treatment (Inscription House 1)0400283TP001Hypochlorination, PostDisinfection
02T-317 Treatment (Inscription House 1)0400283TP001FluoridationOther
02T-517 Treatment (Inscription House 2)0400283TP002Hypochlorination, PostDisinfection
  • 1 - 3 of 3

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.