Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	NN3500278
PWS Name	Tsa Yah Toh NTUA
PWS Type	Community water system
Owner Type	Tribal Government
Primary Source	Ground water
Primacy Type	Tribal
Is Wholesaler?	No
Population Served	865
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, Routine (IDSE)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	350027830245612020	Returned to Compliance	01-JAN-2020	31-DEC-2020	No
MR	Monitoring, Routine (IDSE)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	350027830295012020	Returned to Compliance	01-JAN-2020	31-DEC-2020	No
Other	Sample Siting Plan Errors (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	35002785A800042016	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	3500278350600102013	Returned to Compliance	01-OCT-2013	-	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	3500278233100122012	Returned to Compliance	01-DEC-2012	31-DEC-2012	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	3500278233100112012	Returned to Compliance	01-NOV-2012	30-NOV-2012	No
MR	Monitoring, Regular	Nitrate Rule	Nitrite	350027803104112010	Returned to Compliance	01-JAN-2010	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	350027803238012005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Xylenes, Total	350027803295512005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	350027803296412005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	350027803296812005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	350027803296912005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	350027803299612005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	350027803297712005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	350027803297912005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	350027803298012005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	350027803298112005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	350027803298212005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	350027803298312005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	350027803298412005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	350027803298512005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	350027803298712005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	350027803298912005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	350027803299012005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	350027803299112005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	350027803299212005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	350027803237812005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	350027803401012005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Uranium	350027803400612005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	350027803400012005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	350027803297612005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4,5-TP	350027803211012004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	HEXACHLOROBENZENE	350027803227412004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Benzo(a)pyrene	350027803230612004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Pentachlorophenol	350027803232612004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Chlordane	350027803295912004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4-D	350027803210512004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Total Polychlorinated Biphenyls (PCB)	350027803238312004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor epoxide	350027803206712004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor	350027803206512004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,3,7,8-TCDD	350027803206312004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	LASSO	350027803205112004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Atrazine	350027803205012004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb	350027803204712004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Carbofuran	350027803204612004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb sulfone	350027803204412004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb sulfoxide	350027803204312004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Hexachlorocyclopentadiene	350027803204212004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dinoseb	350027803204112004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Picloram	350027803204012004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No

1 - 50 of 65

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
3500278OX02182541870	3500278350600102013	SOX	State Compliance achieved	18-FEB-2025	State	DBP Site Sample Plan submitted and approved.
3500278FJ08282441491	35002785A800042016	SFJ	State Formal Notice of Violation issued	28-AUG-2024	State	NOV issued for failure to prepare a site sampling plan for total coliform.
3500278OX08112138890	350027830295012020	SOX	State Compliance achieved	11-AUG-2021	State	2020 DBPs Stage 2 M/R. Return To Compliance. Full sample sets collected 08/11/2021.
3500278OX08112138891	350027830245612020	SOX	State Compliance achieved	11-AUG-2021	State	2020 DBPs Stage 2 M/R. Return To Compliance. Full sample sets collected 08/11/2021.
3500278OX01111323612	3500278233100122012	SOX	State Compliance achieved	11-JAN-2013	State	2012 Dec TCR M/R. RTC, received NTUA TCR results on 01-11-2013.
3500278OX12111223694	3500278233100112012	SOX	State Compliance achieved	11-DEC-2012	State	2012 Nov TCR M/R. RTC, received NTUA TCR results on 12-11-2012.
3500278OX02211219293	350027803237812005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
3500278OX02211219289	350027803299212005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of sample are due during 2011-2013.
3500278OX02211219279	350027803299012005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of sample are due during 2011-2013.
3500278OX02211219290	350027803298912005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of sample are due during 2011-2013.
3500278OX02211219282	350027803298412005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of sample are due during 2011-2013.
3500278OX02211219288	350027803298312005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of sample are due during 2011-2013.
3500278OX02211219280	350027803298212005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of sample are due during 2011-2013.
3500278OX02211219285	350027803298112005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of sample are due during 2011-2013.
3500278OX02211219281	350027803298012005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of sample are due during 2011-2013.
3500278OX02211219284	350027803297712005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of sample are due during 2011-2013.
3500278OX02211219286	350027803297612005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of sample are due during 2011-2013.
3500278OX02211219283	350027803296912005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of sample are due during 2011-2013.
3500278OX02211219291	350027803296812005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of sample are due during 2011-2013.
3500278OX02211219292	350027803296412005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of sample are due during 2011-2013.
3500278OX02211219287	350027803238012005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of sample are due during 2011-2013.
3500278OX02211219278	350027803295512005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
3500278OX02211219277	350027803297912005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
3500278OX02211219294	350027803298512005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
3500278OX02211219276	350027803299112005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
3500278OX02211219275	350027803298712005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
3500278OX02211219274	350027803299612005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
3500278OX10311114893	350027803401012005	SOX	State Compliance achieved	31-OCT-2011	State	RTC, a nine-year waiver of the radionuclides was issued. The next sample is due prior to 12/31/11.
3500278OX10311114895	350027803400012005	SOX	State Compliance achieved	31-OCT-2011	State	RTC, a nine-year waiver of the radionuclides was issued. The next sample is due prior to 12/31/11.
3500278OX10311114894	350027803400612005	SOX	State Compliance achieved	31-OCT-2011	State	RTC, a nine-year waiver of the radionuclides was issued. The next sample is due prior to 12/31/11.
3500278OX10211112837	350027803104112010	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.
3500278OX03/22/2007	350027803400012004	SOX	State Compliance achieved	22-MAR-2007	State	Quarterly sampling conducted during 2006.
3500278OX12/05/2005	350027803295912004	SOX	State Compliance achieved	05-DEC-2005	State	SOC Sampled 12/5/05.
3500278OX12/05/2005	350027803293112004	SOX	State Compliance achieved	05-DEC-2005	State	SOC Sampled 12/5/05.
3500278OX12/05/2005	350027803238312004	SOX	State Compliance achieved	05-DEC-2005	State	SOC Sampled 12/5/05.
3500278OX12/05/2005	350027803232612004	SOX	State Compliance achieved	05-DEC-2005	State	SOC Sampled 12/5/05.
3500278OX12/05/2005	350027803230612004	SOX	State Compliance achieved	05-DEC-2005	State	SOC Sampled 12/5/05.
3500278OX12/05/2005	350027803227412004	SOX	State Compliance achieved	05-DEC-2005	State	SOC Sampled 12/5/05.
3500278OX12/05/2005	350027803211012004	SOX	State Compliance achieved	05-DEC-2005	State	SOC Sampled 12/5/05.
3500278OX12/05/2005	350027803210512004	SOX	State Compliance achieved	05-DEC-2005	State	SOC Sampled 12/5/05.
3500278OX12/05/2005	350027803206712004	SOX	State Compliance achieved	05-DEC-2005	State	SOC Sampled 12/5/05.
3500278OX12/05/2005	350027803206512004	SOX	State Compliance achieved	05-DEC-2005	State	SOC Sampled 12/5/05.
3500278OX12/05/2005	350027803205112004	SOX	State Compliance achieved	05-DEC-2005	State	SOC Sampled 12/5/05.
3500278OX12/05/2005	350027803205012004	SOX	State Compliance achieved	05-DEC-2005	State	SOC Sampled 12/5/05.
3500278OX12/05/2005	350027803204712004	SOX	State Compliance achieved	05-DEC-2005	State	SOC Sampled 12/5/05.
3500278OX12/05/2005	350027803204612004	SOX	State Compliance achieved	05-DEC-2005	State	SOC Sampled 12/5/05.
3500278OX12/05/2005	350027803204412004	SOX	State Compliance achieved	05-DEC-2005	State	SOC Sampled 12/5/05.
3500278OX12/05/2005	350027803204312004	SOX	State Compliance achieved	05-DEC-2005	State	SOC Sampled 12/5/05.
3500278OX12/05/2005	350027803204212004	SOX	State Compliance achieved	05-DEC-2005	State	SOC Sampled 12/5/05.
3500278OX12/05/2005	350027803204112004	SOX	State Compliance achieved	05-DEC-2005	State	SOC Sampled 12/5/05.

1 - 50 of 65

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
16T-584 (TSAYATOH 1)	3500278GW001	Yes	Well	Ground water	Permanent	Active
16T-584 Entry Point (Tsayatoh 1)	3500278EP001	No	Common Headers	-	-	Active
NN3500278 NTUA Tsayatoh Distribution Sys	3500278DS001	No	Distribution System/Zone	-	-	Active
NTUA Manuelito North Distribution System	3500278DS002	No	Distribution System/Zone	-	-	Active
Tsayatoh North Storage Tank	3500278ST001	No	Storage	-	-	Active
Manuelito North Storage Tank	3500278ST002	No	Storage	-	-	Active
16T-584 Treatment (Tsayatoh 1 ; GW001)	3500278TP001	No	Treatment Plant	-	-	Active

1 - 7 of 7

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
16T-584 Treatment (Tsayatoh 1 ; GW001)	3500278TP001	Hypochlorination, Post	Disinfection
16T-584 Treatment (Tsayatoh 1 ; GW001)	3500278TP001	Fluoridation	Other

1 - 2 of 2

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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