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PWS ID	NN3500211
PWS Name	Mariano Lake-Pinedale-Church Rock NTUA
PWS Type	Community water system
Owner Type	Tribal Government
Primary Source	Ground water
Primacy Type	Tribal
Is Wholesaler?	Yes
Population Served	4562
County Served

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.

Violations

Violation Category Code	Violation Type Description	Rule Name	Contaminant Name	Violation ID	Compliance Status Description	Compliance Period Begin Date	Compliance Period End Date	Is Health Based Ind
MR	Monitoring, Regular	Inorganic Chemicals	Fluoride	350021103102512021	Returned to Compliance	01-JAN-2021	31-DEC-2021	No
MR	Monitoring, Regular	Inorganic Chemicals	Fluoride	350021103102512020	Returned to Compliance	01-JAN-2020	31-DEC-2020	No
MR	Monitoring, Routine (IDSE)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	350021130245612020	Returned to Compliance	01-JAN-2020	31-DEC-2020	No
MR	Monitoring, Routine (IDSE)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	350021130295012020	Returned to Compliance	01-JAN-2020	31-DEC-2020	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	35002113A800042017	Returned to Compliance	01-APR-2017	30-APR-2017	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	35002113A800032017	Returned to Compliance	01-MAR-2017	31-MAR-2017	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	35002113A800022017	Returned to Compliance	01-FEB-2017	28-FEB-2017	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	35002113A800012017	Returned to Compliance	01-JAN-2017	31-JAN-2017	No
Other	Sample Siting Plan Errors (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	35002115A800042016	Open	01-APR-2016	-	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	350021127295012014	Returned to Compliance	01-JAN-2014	31-DEC-2014	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	350021127245612014	Returned to Compliance	01-JAN-2014	31-DEC-2014	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Glyphosate	350021103203472013	Returned to Compliance	01-JUL-2013	30-SEP-2013	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endothall	350021103203372013	Returned to Compliance	01-JUL-2013	30-SEP-2013	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,3,7,8-TCDD	350021103206372013	Returned to Compliance	01-JUL-2013	30-SEP-2013	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Diquat	350021103203272013	Returned to Compliance	01-JUL-2013	30-SEP-2013	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	3500211233100122012	Returned to Compliance	01-DEC-2012	31-DEC-2012	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	3500211233100112012	Returned to Compliance	01-NOV-2012	30-NOV-2012	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	350021124310022012	Returned to Compliance	01-FEB-2012	29-FEB-2012	No
MCL	Maximum Contaminant Level Violation, Average	Synthetic Organic Chemicals	1,2-DIBROMO-3-CHLOROPROPANE	3500211022931102010	Returned to Compliance	01-OCT-2010	31-DEC-2010	Yes
MR	Monitoring, Regular	Nitrate Rule	Nitrite	350021103104112010	Returned to Compliance	01-JAN-2010	31-DEC-2010	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Total Polychlorinated Biphenyls (PCB)	350021103238312008	Returned to Compliance	01-JAN-2008	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	350021103298412008	Returned to Compliance	01-JAN-2008	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	350021103238012008	Returned to Compliance	01-JAN-2008	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	350021103296412008	Returned to Compliance	01-JAN-2008	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	350021103296812008	Returned to Compliance	01-JAN-2008	31-DEC-2010	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	ETHYLENE DIBROMIDE	350021103294612008	Returned to Compliance	01-JAN-2008	31-DEC-2010	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	1,2-DIBROMO-3-CHLOROPROPANE	350021103293112008	Returned to Compliance	01-JAN-2008	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	350021103297912008	Returned to Compliance	01-JAN-2008	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	350021103297712008	Returned to Compliance	01-JAN-2008	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	350021103296912008	Returned to Compliance	01-JAN-2008	31-DEC-2010	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	3500211223100102005	Returned to Compliance	01-OCT-2005	31-OCT-2005	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	350021122310082004	Returned to Compliance	01-AUG-2004	31-AUG-2004	Yes
MR	Monitoring, Repeat Minor (TCR)	Total Coliform Rule	Coliform (TCR)	350021126310082004	Returned to Compliance	01-AUG-2004	31-AUG-2004	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	350021122310092003	Returned to Compliance	01-SEP-2003	30-SEP-2003	Yes

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Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
3500211FJ08282441472	35002115A800042016	SFJ	State Formal Notice of Violation issued	28-AUG-2024	State	NOV issued for failure to prepare a site sampling plan for total coliform.
3500211OX02232239163	350021103102512020	SOX	State Compliance achieved	23-FEB-2022	State	2020 Fluoride M/R. Return To Compliance. Full sample set collected 02/23/2022.
3500211OX02232239164	350021103102512021	SOX	State Compliance achieved	23-FEB-2022	State	2021 Fluoride M/R. Return To Compliance. Full sample set collected 02/23/2022.
3500211OX07202138853	350021130245612020	SOX	State Compliance achieved	20-JUL-2021	State	RTC, sample results received.
3500211OX07202138852	350021130295012020	SOX	State Compliance achieved	20-JUL-2021	State	RTC, sample results received.
3500211OX11131733837	35002113A800042017	SOX	State Compliance achieved	13-NOV-2017	State	RTC, PN received. Failure to collect appropriate numbers of monthly bactees. NTUA has collected appropriate bactee numbers since May 2017.
3500211OX11131733836	35002113A800022017	SOX	State Compliance achieved	13-NOV-2017	State	RTC, PN received. Failure to collect appropriate numbers of monthly bactees. NTUA has collected appropriate bactee numbers since May 2017.
3500211OX11131733835	35002113A800012017	SOX	State Compliance achieved	13-NOV-2017	State	RTC, PN received. Failure to collect appropriate numbers of monthly bactees. NTUA has collected appropriate bactee numbers since May 2017.
3500211OX11131733834	35002113A800032017	SOX	State Compliance achieved	13-NOV-2017	State	RTC, PN received. Failure to collect appropriate numbers of monthly bactees. NTUA has collected appropriate bactee numbers since May 2017.
3500211OX11301531725	350021103203272013	SOX	State Compliance achieved	30-NOV-2015	State	RTC, results received.
3500211OX11301531726	350021103203372013	SOX	State Compliance achieved	30-NOV-2015	State	RTC, results received.
3500211OX11301531727	350021103203472013	SOX	State Compliance achieved	30-NOV-2015	State	RTC, results received.
3500211OX11301531728	350021103206372013	SOX	State Compliance achieved	30-NOV-2015	State	RTC, results received.
3500211OX07201531642	350021127245612014	SOX	State Compliance achieved	20-JUL-2015	State	RTC, annual Stage 2 DBP sample collected on 7/20/2015.
3500211OX07201531641	350021127295012014	SOX	State Compliance achieved	20-JUL-2015	State	RTC, annual Stage 2 DBP sample collected on 7/20/2015.
3500211OX05181531643	350021103298412008	SOX	State Compliance achieved	18-MAY-2015	State	RTC, VOC samples collected on 5/18/2015 were received.
3500211OX05181531648	350021103297912008	SOX	State Compliance achieved	18-MAY-2015	State	RTC, VOC samples collected on 5/18/2015 were received.
3500211OX05181531645	350021103297712008	SOX	State Compliance achieved	18-MAY-2015	State	RTC, VOC samples collected on 5/18/2015 were received.
3500211OX05181531647	350021103296812008	SOX	State Compliance achieved	18-MAY-2015	State	RTC, VOC samples collected on 5/18/2015 were received.
3500211OX05181531649	350021103296412008	SOX	State Compliance achieved	18-MAY-2015	State	RTC, VOC samples collected on 5/18/2015 were received.
3500211OX05181531646	350021103238012008	SOX	State Compliance achieved	18-MAY-2015	State	RTC, VOC samples collected on 5/18/2015 were received.
3500211OX05181531644	350021103296912008	SOX	State Compliance achieved	18-MAY-2015	State	RTC, VOC samples collected on 5/18/2015 were received.
3500211OX11051329088	350021103293112008	SOX	State Compliance achieved	05-NOV-2013	State	RTC, sampled quarterly.
3500211OX11051329090	350021103238312008	SOX	State Compliance achieved	05-NOV-2013	State	RTC, sampled quarterly.
3500211OX11051329089	350021103294612008	SOX	State Compliance achieved	05-NOV-2013	State	RTC, sampled quarterly.
3500211OX01111323598	3500211233100122012	SOX	State Compliance achieved	11-JAN-2013	State	2012 Dec TCR M/R. RTC, received NTUA TCR results on 01-11-2013.
3500211OX12111223680	3500211233100112012	SOX	State Compliance achieved	11-DEC-2012	State	2012 Nov TCR M/R. RTC, received NTUA TCR results on 12-11-2012.
3500211FJ05311220965	350021124310022012	SFJ	State Formal Notice of Violation issued	31-MAY-2012	State	NOV issued for failure to collect the required 5 monthly bactee samples.
3500211OX02211219012	3500211022931102010	SOX	State Compliance achieved	21-FEB-2012	State	RTC, no MCL average violation.
3500211OX10211112825	350021103104112010	SOX	State Compliance achieved	21-OCT-2011	State	RTC, 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.
3500211FJ0516085247	350021122310082004	SFJ	State Formal Notice of Violation issued	16-MAY-2008	State	NOV issued for MCL violation and failure to collect repeat samples. NOV also addressed PN requirements.
3500211FJ0516085246	350021122310092003	SFJ	State Formal Notice of Violation issued	16-MAY-2008	State	NOV issued for MCL violation and failure to collect repeat samples.
3500211FJ0516085249	3500211223100102005	SFJ	State Formal Notice of Violation issued	16-MAY-2008	State	NOV issued for MCL violation.
3500211FJ0516085248	350021126310082004	SFJ	State Formal Notice of Violation issued	16-MAY-2008	State	NOV issued for MCL violation and failure to collect repeat samples. NOV also addressed PN requirements.

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All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
16T-538B (CHURCH ROCK B)	3500211GW005	Yes	Well	Ground water	Other	Inactive
16-0694 (MARIANO LAKE 4)	3500211GW009	Yes	Well	Ground water	Permanent	Active
16-0691 (PINEDALE 1)	3500211GW008	Yes	Well	Ground water	Permanent	Active
16T-596 (MARIANO LAKE 2)	3500211GW004	Yes	Well	Ground water	Permanent	Active
16T-595 (MARIANO LAKE 1)	3500211GW003	Yes	Well	Ground water	Permanent	Active
16T-538U (CHURCH ROCK UNC)	3500211GW007	Yes	Well	Ground water	Other	Inactive
16T-538E (CHURCH ROCK E)	3500211GW006	Yes	Well	Ground water	Other	Inactive
16T-595 Entry Point (Mariano Lake 1)	3500211EP003	No	Common Headers	-	-	Active
16T-596 Entry Point (Mariano Lake 2)	3500211EP004	No	Common Headers	-	-	Active
16-0691 Entry Point (Pinedale 1)	3500211EP008	No	Common Headers	-	-	Active
16-0694 Entry Point (Mariano Lake 4)	3500211EP009	No	Common Headers	-	-	Active
16T-538B Entry Point (Chuch Rock B)	3500211EP005	No	Common Headers	-	-	Inactive
16T-538E Entry Point (Chuch Rock E)	3500211EP006	No	Common Headers	-	-	Inactive
16T-538U Entry Point (Church Rock UNC)	3500211EP007	No	Common Headers	-	-	Inactive
NN3500211 Mariano Lake-Church Rock Distribution	3500211DS001	No	Distribution System/Zone	-	-	Active
Sundance Booster Station	3500211PF001	No	Pump Facility	-	-	Active
Hardground Booster Station	3500211PF002	No	Pump Facility	-	-	Active
Sundance South Booster Station	3500211PF003	No	Pump Facility	-	-	Active
Wingate Booster Station	3500211PF004	No	Pump Facility	-	-	Active
Mariano Lake storage tank	3500211ST004	No	Storage	-	-	Active
Pinedale storage tank	3500211ST005	No	Storage	-	-	Active
Church Rock storage tank	3500211ST006	No	Storage	-	-	Active
Churchrock (Sundance) Tank	3500211ST007	No	Storage	-	-	Active
Churchrock (Hardground Canyon Booster) Tank	3500211ST008	No	Storage	-	-	Active
Churchrock (Sundance South Booster) Tank	3500211ST009	No	Storage	-	-	Active
Mariano Lake North (Yellow Mesa) Tank	3500211ST010	No	Storage	-	-	Active
16T-595 Treatment (Mariano Lake 1)	3500211TP003	No	Treatment Plant	-	-	Active
16T-596 Treatment (Mariano Lake 2)	3500211TP004	No	Treatment Plant	-	-	Active
16-0691 Treatment (Pinedale 1)	3500211TP008	No	Treatment Plant	-	-	Active
16-0694 Treatment (Mariano Lake 4)	3500211TP009	No	Treatment Plant	-	-	Active
16T-538B Treatment (Chuch Rock B)	3500211TP005	No	Treatment Plant	-	-	Inactive
16T-538E Treatment (Chuch Rock E)	3500211TP006	No	Treatment Plant	-	-	Inactive
16T-538U Treatment (Church Rock UNC)	3500211TP007	No	Treatment Plant	-	-	Inactive

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Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
16T-595 Treatment (Mariano Lake 1)	3500211TP003	Gaseous Chlorination, Post	Disinfection
16T-596 Treatment (Mariano Lake 2)	3500211TP004	Gaseous Chlorination, Post	Disinfection
16T-538B Treatment (Chuch Rock B)	3500211TP005	Hypochlorination, Post	Disinfection
16T-538E Treatment (Chuch Rock E)	3500211TP006	Hypochlorination, Post	Disinfection
16T-538U Treatment (Church Rock UNC)	3500211TP007	Hypochlorination, Post	Disinfection
16-0691 Treatment (Pinedale 1)	3500211TP008	Gaseous Chlorination, Post	Disinfection
16-0694 Treatment (Mariano Lake 4)	3500211TP009	Gaseous Chlorination, Post	Disinfection

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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.

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