Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	NN0400290
PWS Name	Chilchinbeto NTUA
PWS Type	Community water system
Owner Type	Tribal Government
Primary Source	Ground water
Primacy Type	Tribal
Is Wholesaler?	No
Population Served	1276
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	Nitrate Rule	Nitrate	040029003104012024	Returned to Compliance	01-JAN-2024	31-DEC-2024	No
MR	Monitoring, Regular	Nitrate Rule	Nitrite	040029003104112024	Returned to Compliance	01-JAN-2024	31-DEC-2024	No
MR	Monitoring, Routine (IDSE)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	040029030295012017	Returned to Compliance	01-JAN-2017	31-DEC-2017	No
MR	Monitoring, Routine (IDSE)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	040029030245612017	Returned to Compliance	01-JAN-2017	31-DEC-2017	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	04002903A800072016	Returned to Compliance	01-JUL-2016	31-JUL-2016	No
Other	Sample Siting Plan Errors (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	04002905A800042016	Open	01-APR-2016	-	No
MR	Failure Submit IDSE/Subpart V Plan Rpt	Stage 2 Disinfectants and Disinfection Byproducts Rule	Stage 2 Disinfectants and Disinfection Byproducts Rule	0400290350600102013	Open	01-OCT-2013	-	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	0400290233100122012	Returned to Compliance	01-DEC-2012	31-DEC-2012	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	0400290233100112012	Returned to Compliance	01-NOV-2012	30-NOV-2012	No
MR	Monitoring, Regular	Nitrate Rule	Nitrite	040029003104112010	Returned to Compliance	01-JAN-2010	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	040029003298112005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	040029003298012005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	040029003297912005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	040029003297712005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	040029003297612005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	040029003296912005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	040029003296812005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	040029003296412005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Xylenes, Total	040029003295512005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	040029003238012005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	040029003237812005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	040029003298212005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	040029003298312005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	040029003298412005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	040029003298712005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	040029003298912005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	040029003299012005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	040029003299112005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	040029003299212005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	040029003299612005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	040029003104012005	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	040029003298512005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	0350003	Known	01-JUN-2003	30-JUN-2003	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	0200012	Known	01-APR-2002	30-APR-2002	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
0400290OX09242441958	040029003104012024	SOX	State Compliance achieved	24-SEP-2024	State	RTC, Nitrate/Nitrite sample collected on 09/24/24.
0400290OX09242441959	040029003104112024	SOX	State Compliance achieved	24-SEP-2024	State	RTC, Nitrate/Nitrite sample collected on 09/24/24.
0400290FJ08282441391	04002905A800042016	SFJ	State Formal Notice of Violation issued	28-AUG-2024	State	NOV issued for failure to prepare a site-sampling plan for total coliform.
0400290OX08271836478	040029030295012017	SOX	State Compliance achieved	27-AUG-2018	State	RTC, sample results received for samples collected on 08/27/2018.
0400290OX08271836479	040029030245612017	SOX	State Compliance achieved	27-AUG-2018	State	RTC, sample results received for samples collected on 08/27/2018.
0400290FJ08251733320	0400290350600102013	SFJ	State Formal Notice of Violation issued	25-AUG-2017	State	NOV issued for failure to submit a DBP site sampling plan.
0400290FJ12081632811	04002903A800072016	SFJ	State Formal Notice of Violation issued	08-DEC-2016	State	NOV issued for failure to collect a July bactee sample.
0400290OX01111323566	0400290233100122012	SOX	State Compliance achieved	11-JAN-2013	State	2012 Dec TCR M/R. RTC, received NTUA TCR results on 01-11-2013.
0400290OX12111223648	0400290233100112012	SOX	State Compliance achieved	11-DEC-2012	State	2012 Nov TCR M/R. RTC, received NTUA TCR results on 12-11-2012.
0400290OX10211112797	040029003104112010	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.
0400290OX03/06/2006	040029003104012005	SOX	State Compliance achieved	06-MAR-2006	State	NTUA submitted nitrate/nitrite results on 3/3/2006 (Lab#05-N60 and N61) and results were below the MCL.
0400290OX05/17/2004	040029003297912005	SOX	State Compliance achieved	17-MAY-2004	State	RTC, chemical monitoring waiver issued, next sample is required prior to 12-31-11.
0400290OX05/17/2004	040029003298012005	SOX	State Compliance achieved	17-MAY-2004	State	RTC, chemical monitoring waiver issued, next sample is required prior to 12-31-11.
0400290OX05/17/2004	040029003298112005	SOX	State Compliance achieved	17-MAY-2004	State	RTC, chemical monitoring waiver issued, next sample is required prior to 12-31-11.
0400290OX05/17/2004	040029003298212005	SOX	State Compliance achieved	17-MAY-2004	State	RTC, chemical monitoring waiver issued, next sample is required prior to 12-31-11.
0400290OX05/17/2004	040029003298312005	SOX	State Compliance achieved	17-MAY-2004	State	RTC, chemical monitoring waiver issued, next sample is required prior to 12-31-11.
0400290OX05/17/2004	040029003298412005	SOX	State Compliance achieved	17-MAY-2004	State	RTC, chemical monitoring waiver issued, next sample is required prior to 12-31-11.
0400290OX05/17/2004	040029003298512005	SOX	State Compliance achieved	17-MAY-2004	State	RTC, chemical monitoring waiver issued, next sample is required prior to 12-31-11.
0400290OX05/17/2004	040029003298712005	SOX	State Compliance achieved	17-MAY-2004	State	RTC, chemical monitoring waiver issued, next sample is required prior to 12-31-11.
0400290OX05/17/2004	040029003298912005	SOX	State Compliance achieved	17-MAY-2004	State	RTC, chemical monitoring waiver issued, next sample is required prior to 12-31-11.
0400290OX05/17/2004	040029003299012005	SOX	State Compliance achieved	17-MAY-2004	State	RTC, chemical monitoring waiver issued, next sample is required prior to 12-31-11.
0400290OX05/17/2004	040029003299112005	SOX	State Compliance achieved	17-MAY-2004	State	RTC, chemical monitoring waiver issued, next sample is required prior to 12-31-11.
0400290OX05/17/2004	040029003299212005	SOX	State Compliance achieved	17-MAY-2004	State	RTC, chemical monitoring waiver issued, next sample is required prior to 12-31-11.
0400290OX05/17/2004	040029003299612005	SOX	State Compliance achieved	17-MAY-2004	State	RTC, chemical monitoring waiver issued, next sample is required prior to 12-31-11.
0400290OX05/17/2004	040029003238012005	SOX	State Compliance achieved	17-MAY-2004	State	RTC, chemical monitoring waiver issued, next sample is required prior to 12-31-11.
0400290OX05/17/2004	040029003237812005	SOX	State Compliance achieved	17-MAY-2004	State	RTC, chemical monitoring waiver issued, next sample is required prior to 12-31-11.
0400290OX05/17/2004	040029003297712005	SOX	State Compliance achieved	17-MAY-2004	State	RTC, chemical monitoring waiver issued, next sample is required prior to 12-31-11.
0400290OX05/17/2004	040029003297612005	SOX	State Compliance achieved	17-MAY-2004	State	RTC, chemical monitoring waiver issued, next sample is required prior to 12-31-11.
0400290OX05/17/2004	040029003296912005	SOX	State Compliance achieved	17-MAY-2004	State	RTC, chemical monitoring waiver issued, next sample is required prior to 12-31-11.
0400290OX05/17/2004	040029003295512005	SOX	State Compliance achieved	17-MAY-2004	State	RTC, chemical monitoring waiver issued, next sample is required prior to 12-31-11.
0400290OX05/17/2004	040029003296412005	SOX	State Compliance achieved	17-MAY-2004	State	RTC, chemical monitoring waiver issued, next sample is required prior to 12-31-11.
0400290OX05/17/2004	040029003296812005	SOX	State Compliance achieved	17-MAY-2004	State	RTC, chemical monitoring waiver issued, next sample is required prior to 12-31-11.

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All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
08T-540 (Chilchinbeto 1)	0400290GW001	Yes	Well	Ground water	Permanent	Active
08T-548 (Chilchinbeto 2)	0400290GW002	Yes	Well	Ground water	Permanent	Active
08T-540 Entry Point (Chilchinbeto 1)	0400290EP001	No	Common Headers	-	-	Active
08T-548 Entry Point (Chilchinbeto 2)	0400290EP002	No	Common Headers	-	-	Active
NN0400290 NTUA Chilchinbeto Distribution System	0400290DS001	No	Distribution System/Zone	-	-	Active
NN0400290 White Mesa Distribution System 2	0400290DS002	No	Distribution System/Zone	-	-	Active
NN0400290 Yellowhair Distribution System 3	0400290DS003	No	Distribution System/Zone	-	-	Active
White Mesa Booster Station	0400290PF001	No	Pump Facility	-	-	Active
Yellowhair Booster Station	0400290PF002	No	Pump Facility	-	-	Active
Chilchinbeto Main Storage Tank	0400290ST001	No	Storage	-	-	Active
Small White Mesa Storage Tank 1	0400290ST002	No	Storage	-	-	Active
Small White Mesa Storage Tank 2	0400290ST003	No	Storage	-	-	Active
Yellowhair Storage Tank	0400290ST004	No	Storage	-	-	Active
08T-540 Treatment (Chilchinbeto 1 ; GW001)	0400290TP001	No	Treatment Plant	-	-	Active
08T-548 Treatment (Chilchinbeto 2 ; GW002)	0400290TP002	No	Treatment Plant	-	-	Active

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Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
08T-540 Treatment (Chilchinbeto 1 ; GW001)	0400290TP001	Hypochlorination, Post	Disinfection
08T-548 Treatment (Chilchinbeto 2 ; GW002)	0400290TP002	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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