Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	NN4903017
PWS Name	Red Mesa NTUA
PWS Type	Community water system
Owner Type	Tribal Government
Primary Source	Surface water purchased
Primacy Type	Tribal
Is Wholesaler?	Yes
Population Served	1023
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
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	490301702100572024	Returned to Compliance	01-JUL-2024	30-SEP-2024	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	490301775750072024	Open	01-JUL-2024	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	490301775750042024	Open	01-APR-2024	-	No
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	490301702100542024	Returned to Compliance	01-APR-2024	30-JUN-2024	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	490301702100512024	Returned to Compliance	01-JAN-2024	31-MAR-2024	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	490301775750012024	Open	01-JAN-2024	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	4903017757500102023	Open	01-OCT-2023	-	No
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	4903017021005102023	Returned to Compliance	01-OCT-2023	31-DEC-2023	Yes
MR	Monitoring, Regular	Arsenic Rule	Arsenic	490301703100512022	Returned to Compliance	01-JAN-2022	31-MAR-2022	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	490301703100512019	Returned to Compliance	01-JAN-2019	31-MAR-2019	No
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	490301702100512017	Returned to Compliance	01-JAN-2017	31-MAR-2017	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	490301775750012017	Returned to Compliance	01-JAN-2017	-	No
Other	Sample Siting Plan Errors (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	49030175A800042016	Returned to Compliance	01-APR-2016	-	No
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	4903017021005102015	Returned to Compliance	01-OCT-2015	31-DEC-2015	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	490301702100572014	Returned to Compliance	01-JUL-2014	30-SEP-2014	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	490301775750072014	Returned to Compliance	01-JUL-2014	-	No
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	490301702100542014	Returned to Compliance	01-APR-2014	30-JUN-2014	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	490301775750042014	Returned to Compliance	01-APR-2014	-	No
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	490301702100512014	Returned to Compliance	01-JAN-2014	31-MAR-2014	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	490301775750012014	Returned to Compliance	01-JAN-2014	-	No
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	4903017021005102013	Returned to Compliance	01-OCT-2013	31-DEC-2013	Yes
MR	Failure Submit IDSE/Subpart V Plan Rpt	Stage 2 Disinfectants and Disinfection Byproducts Rule	Stage 2 Disinfectants and Disinfection Byproducts Rule	4903017350600102013	Returned to Compliance	01-OCT-2013	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	4903017757500102013	Returned to Compliance	01-OCT-2013	-	No
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	490301702100572013	Returned to Compliance	01-JUL-2013	30-SEP-2013	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	490301702100542013	Returned to Compliance	01-APR-2013	30-JUN-2013	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	490301702100512013	Returned to Compliance	01-JAN-2013	31-MAR-2013	Yes
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	4903017233100122012	Returned to Compliance	01-DEC-2012	31-DEC-2012	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	4903017233100112012	Returned to Compliance	01-NOV-2012	30-NOV-2012	No
MR	Monitoring, Regular	Nitrate Rule	Nitrite	490301703104112010	Returned to Compliance	01-JAN-2010	31-DEC-2010	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	490301723310092007	Returned to Compliance	01-SEP-2007	30-SEP-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	490301703298112005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	490301703298012005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	490301703297912005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	490301703297712005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	490301703297612005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	490301703296912005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	490301703296812005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	490301703296412005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Xylenes, Total	490301703295512005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	490301703238012005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	490301703237812005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	490301703401012005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Uranium	490301703400612005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	490301703298212005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	490301703298312005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	490301703298412005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	490301703298512005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	490301703298712005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	490301703298912005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	490301703299012005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No

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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
4903017FJ04302542455	490301775750072024	SFJ	State Formal Notice of Violation issued	30-APR-2025	State	NOV, PN required.
4903017OX03072541815	49030175A800042016	SOX	State Compliance achieved	07-MAR-2025	State	RTCR Site Sample Plan submitted and approved.
4903017FJ03072541973	490301775750042024	SFJ	State Formal Notice of Violation issued	07-MAR-2025	State	NOV, PN required for arsenic exceedance.
4903017FJ03072541971	490301702100572024	SFJ	State Formal Notice of Violation issued	07-MAR-2025	State	NOV issued for arsenic exceedance during the 3rd qtr 2024, PN required.
4903017OX02102541652	4903017350600102013	SOX	State Compliance achieved	10-FEB-2025	State	DBP Site Sample Plan submitted and approved.
4903017OX11132442545	490301702100542024	SOX	State Compliance achieved	13-NOV-2024	State	RTC - RAA below MCL.
4903017OX11132442544	490301702100512024	SOX	State Compliance achieved	13-NOV-2024	State	RTC - RAA below MCL.
4903017OX11132442543	4903017021005102023	SOX	State Compliance achieved	13-NOV-2024	State	RTC - RAA below MCL.
4903017FJ08282441463	4903017757500102023	SFJ	State Formal Notice of Violation issued	28-AUG-2024	State	NOV, PN Tier 2 required for October 2023.
4903017FJ08282441462	490301775750012024	SFJ	State Formal Notice of Violation issued	28-AUG-2024	State	NOV, PN Tier 2 required.
4903017OX05192239552	490301703100512022	SOX	State Compliance achieved	19-MAY-2022	State	2022-Q1 Arsenic M/R. RTC. Full sample set collected 05/19/2022.
4903017FJ07101936986	490301703100512019	SFJ	State Formal Notice of Violation issued	10-JUL-2019	State	NOV issued for failure to collect a quarterly arsenic sample.
4903017FJ06231733273	490301702100512017	SFJ	State Formal Notice of Violation issued	23-JUN-2017	State	NOV issued for an arsenic MCL exceedance.
4903017OX05191733477	490301775750012017	SOX	State Compliance achieved	19-MAY-2017	State	RTC, PN received.
4903017OX08021632696	4903017021005102015	SOX	State Compliance achieved	02-AUG-2016	State	RTC, RAA is 0.0092 mg/L for arsenic.
4903017IE03041530353	490301775750072014	SIE	State Public Notification requested	04-MAR-2015	State	NOV, PN required.
4903017FJ11171429449	490301702100572014	SFJ	State Formal Notice of Violation issued	17-NOV-2014	State	NOV issued for exceeding the arsenic MCL. System had been undergoing a change in source water through the Four Corners Regional Project. The system had been sampled for arsenic which is still lowering to the arsenic MCL but as of July 2014, the arsenic
4903017FJ11171429446	490301702100572013	SFJ	State Formal Notice of Violation issued	17-NOV-2014	State	NOV issued for exceeding the arsenic MCL. System had been undergoing a change in source water through the Four Corners Regional Project. The system had been sampled for arsenic which is still lowering to the arsenic MCL but as of July 2014, the arsenic
4903017FJ11171429448	490301702100542014	SFJ	State Formal Notice of Violation issued	17-NOV-2014	State	NOV issued for exceeding the arsenic MCL. System had been undergoing a change in source water through the Four Corners Regional Project. The system had been sampled for arsenic which is still lowering to the arsenic MCL but as of July 2014, the arsenic
4903017FJ11171429445	490301702100542013	SFJ	State Formal Notice of Violation issued	17-NOV-2014	State	NOV issued for exceeding the arsenic MCL. System had been undergoing a change in source water through the Four Corners Regional Project. The system had been sampled for arsenic which is still lowering to the arsenic MCL but as of July 2014, the arsenic
4903017FJ11171429444	490301702100512013	SFJ	State Formal Notice of Violation issued	17-NOV-2014	State	NOV issued for exceeding the arsenic MCL. System had been undergoing a change in source water through the Four Corners Regional Project. The system had been sampled for arsenic which is still lowering to the arsenic MCL but as of July 2014, the arsenic
4903017FJ11171429447	490301702100512014	SFJ	State Formal Notice of Violation issued	17-NOV-2014	State	NOV issued for exceeding the arsenic MCL. System had been undergoing a change in source water through the Four Corners Regional Project. The system had been sampled for arsenic which is still lowering to the arsenic MCL but as of July 2014, the arsenic
4903017OX11171429440	4903017757500102013	SOX	State Compliance achieved	17-NOV-2014	State	RTC, public notified of arsenic exceedances through the 2013 CCR.
4903017OX11171429442	490301775750042014	SOX	State Compliance achieved	17-NOV-2014	State	RTC, public notified of arsenic exceedances through the 2013 CCR.
4903017OX11171429441	490301775750012014	SOX	State Compliance achieved	17-NOV-2014	State	RTC, public notified of arsenic exceedances through the 2013 CCR.
4903017OX11031429951	4903017021005102013	SOX	State Compliance achieved	03-NOV-2014	State	RTC, RAA is 0.0104 as of 2/3/2015. System will continue to be required to conduct quarterly sampling.
4903017OX01111323632	4903017233100122012	SOX	State Compliance achieved	11-JAN-2013	State	2012 Dec TCR M/R. RTC, received NTUA TCR results on 01-11-2013.
4903017OX12111223714	4903017233100112012	SOX	State Compliance achieved	11-DEC-2012	State	2012 Nov TCR M/R. RTC, received NTUA TCR results on 12-11-2012.
4903017OX02211220073	490301703297912005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
4903017OX02211220059	490301703298012005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
4903017OX02211220063	490301703298112005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
4903017OX02211220058	490301703298212005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
4903017OX02211220066	490301703298312005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
4903017OX02211220060	490301703298412005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
4903017OX02211220077	490301703298512005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
4903017OX02211220071	490301703298712005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
4903017OX02211220068	490301703298912005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
4903017OX02211220057	490301703299012005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
4903017OX02211220072	490301703299112005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
4903017OX02211220067	490301703299212005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
4903017OX02211220070	490301703299612005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
4903017OX02211220062	490301703297712005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
4903017OX02211220065	490301703238012005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
4903017OX02211220061	490301703296912005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
4903017OX02211220064	490301703297612005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
4903017OX02211220074	490301703295512005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
4903017OX02211220075	490301703296412005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
4903017OX02211220069	490301703296812005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
4903017OX02211220076	490301703237812005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
4903017OX10251113005	490301703400612005	SOX	State Compliance achieved	25-OCT-2011	State	RTC, radionuclide 9-year waiver allowed. Next sample required prior to December 31, 2011

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All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
NN0400399 NTUA Sweetwater CWS	4903017SW121	Yes	Consecutive Connection	Surface water	Permanent	Active
09T-567 (RED MESA 1)	4903017GW001	Yes	Well	Ground water	Permanent	Active
09T-567 Entry Point (Red Mesa 1)	4903017EP001	No	Common Headers	-	-	Active
Red Mesa Tank 1 Entry Point	4903017EP121	No	Common Headers	-	-	Active
NN4903017 NTUA Red Mesa Distribution System	4903017DS001	No	Distribution System/Zone	-	-	Active
Sweetwater-Red Mesa Solenoid Valve Station	4903017OT121	No	Other	-	-	Active
Red Mesa Well 1 to Red Mesa Tank 1 Transmission	4903017TM122	No	Other	-	-	Active
Red Mesa #1	4903017ST001	No	Storage	-	-	Active
Red Mesa #2	4903017ST002	No	Storage	-	-	Active
Holly Village	4903017ST003	No	Storage	-	-	Active
White Mesa	4903017ST004	No	Storage	-	-	Active
09T-567 Treatment (Red Mesa 1)	4903017TP001	No	Treatment Plant	-	-	Active

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Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
09T-567 Treatment (Red Mesa 1)	4903017TP001	Hypochlorination, Post	Disinfection
09T-567 Treatment (Red Mesa 1)	4903017TP001	Fluoridation	Other

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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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