Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	NN0403021
PWS Name	Cottonwood-Tselani NTUA
PWS Type	Community water system
Owner Type	Tribal Government
Primary Source	Ground water purchased
Primacy Type	Tribal
Is Wholesaler?	No
Population Served	1334
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)	040302130245612020	Returned to Compliance	01-JAN-2020	31-DEC-2020	No
MR	Monitoring, Routine (IDSE)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	040302130295012020	Returned to Compliance	01-JAN-2020	31-DEC-2020	No
Other	Sample Siting Plan Errors (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	04030215A800042016	Returned to Compliance	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	0403021350600102013	Open	01-OCT-2013	-	No
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	040302102100572013	Returned to Compliance	01-JUL-2013	30-SEP-2013	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	040302102100542013	Returned to Compliance	01-APR-2013	30-JUN-2013	Yes
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	0403021233100122012	Returned to Compliance	01-DEC-2012	31-DEC-2012	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	0403021233100112012	Returned to Compliance	01-NOV-2012	30-NOV-2012	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	040302122310072011	Returned to Compliance	01-JUL-2011	31-JUL-2011	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	0403021024000102010	Returned to Compliance	01-OCT-2010	31-DEC-2010	Yes
MR	Monitoring, Regular	Nitrate Rule	Nitrite	040302103104112010	Returned to Compliance	01-JAN-2010	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	040302103298012005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	040302103297912005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	040302103297712005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	040302103297612005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	040302103296912005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	040302103296812005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	040302103296412005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Xylenes, Total	040302103295512005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	040302103238012005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	040302103237812005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	040302103298112005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	040302103298212005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	040302103298312005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	040302103298412005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	040302103298712005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	040302103298912005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	040302103299012005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	040302103299112005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	040302103299212005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	040302103299612005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	040302103401012005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	040302103298512005	Returned to Compliance	01-JAN-2005	31-DEC-2010	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	040302103400012004	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	0350027	Known	01-DEC-2002	31-DEC-2002	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	0403021243100122002	Returned to Compliance	01-DEC-2002	31-DEC-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
0403021OX01242541654	04030215A800042016	SOX	State Compliance achieved	24-JAN-2025	State	RTC-RTCR Site plan approved.
0403021OX07132138927	040302130295012020	SOX	State Compliance achieved	13-JUL-2021	State	2020 DBPs Stage 2 M/R. Return To Compliance. Full sample sets collected 07/13/2021.
0403021OX07132138928	040302130245612020	SOX	State Compliance achieved	13-JUL-2021	State	2020 DBPs Stage 2 M/R. Return To Compliance. Full sample sets collected 07/13/2021.
0403021FJ08251733373	0403021350600102013	SFJ	State Formal Notice of Violation issued	25-AUG-2017	State	NOV issued for failure to submit a DBP site sampling plan.
0403021OX11131327456	040302102100542013	SOX	State Compliance achieved	13-NOV-2013	State	RTC, RAA is 0.0077 for all 2013 quarters.
0403021OX11131327455	040302102100572013	SOX	State Compliance achieved	13-NOV-2013	State	RTC, RAA is 0.0077 for all 2013 quarters.
0403021OX01111323585	0403021233100122012	SOX	State Compliance achieved	11-JAN-2013	State	2012 Dec TCR M/R. RTC, received NTUA TCR results on 01-11-2013.
0403021OX12111223667	0403021233100112012	SOX	State Compliance achieved	11-DEC-2012	State	2012 Nov TCR M/R. RTC, received NTUA TCR results on 12-11-2012.
0403021OX02211218771	040302103297712005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
0403021OX02211218782	040302103297912005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
0403021OX02211218768	040302103298012005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
0403021OX02211218767	040302103298212005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
0403021OX02211218775	040302103298312005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
0403021OX02211218769	040302103298412005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
0403021OX02211218786	040302103298512005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
0403021OX02211218780	040302103298712005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
0403021OX02211218777	040302103298912005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
0403021OX02211218766	040302103299012005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
0403021OX02211218781	040302103299112005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
0403021OX02211218776	040302103299212005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
0403021OX02211218779	040302103299612005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
0403021OX02211218773	040302103297612005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
0403021OX02211218770	040302103296912005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
0403021OX02211218778	040302103296812005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
0403021OX02211218784	040302103296412005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
0403021OX02211218783	040302103295512005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
0403021OX02211218774	040302103238012005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
0403021OX02211218785	040302103237812005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
0403021OX02211218787	040302122310072011	SOX	State Compliance achieved	21-FEB-2012	State	RTC, PN received.
0403021OX02211218772	040302103298112005	SOX	State Compliance achieved	21-FEB-2012	State	RTC, VOC waiver granted. The next set of samples are due during 2011-2013.
0403021OX11031115911	040302103401012005	SOX	State Compliance achieved	03-NOV-2011	State	RTC, system was issued a "time" waiver and is allowed to conduct sampling every six years. The next sample is due prior to 12/31/2014.
0403021OX11031115909	040302103400012004	SOX	State Compliance achieved	03-NOV-2011	State	RTC, system was issued a "time" waiver and is allowed to conduct sampling every six years. The next sample is due prior to 12/31/2014.
0403021OX11031115910	0403021024000102010	SOX	State Compliance achieved	03-NOV-2011	State	RTC, system was issued a "time" waiver and is allowed to conduct sampling every six years. The next sample is due prior to 12/31/2014.
0403021OX10211112816	040302103104112010	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.
0403021OX03/15/2007	0403021243100122002	SOX	State Compliance achieved	15-MAR-2007	State	Results submitted for December 2002. One bactee sample is required/month.

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All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
NN0403004 Pinon-District 4 NTUA	0403021GW101	Yes	Consecutive Connection	Ground water	Permanent	Active
10T-568 (Cottonwood North)	0403021GW002	Yes	Well	Ground water	Other	Inactive
10T-556 (Cottonwood South)	0403021GW001	Yes	Well	Ground water	Other	Inactive
Entry Point from NN0403004 Pinon NTUA	0403021EP101	No	Common Headers	-	-	Active
10T-556 Entry Point (Cottonwood South)	0403021EP001	No	Common Headers	-	-	Inactive
10T-568 Entry Point (Cottonwood North)	0403021EP002	No	Common Headers	-	-	Inactive
NN0403021 Cottonwood Distribution System	0403021DS001	No	Distribution System/Zone	-	-	Active
NN0403021 Cottonwood Southwest Distr System	0403021DS002	No	Distribution System/Zone	-	-	Active
NN0403021 Tselani Distribution System	0403021DS003	No	Distribution System/Zone	-	-	Active
Booster Station #1 (South)	0403021PF001	No	Pump Facility	-	-	Active
Booster Station #2 (North)	0403021PF002	No	Pump Facility	-	-	Active
Cottonwood B	0403021ST001	No	Storage	-	-	Active
Cottonwood East C	0403021ST002	No	Storage	-	-	Active
Cottonwood South A	0403021ST003	No	Storage	-	-	Active
Tselani D	0403021ST004	No	Storage	-	-	Active
10T-556 Treatment (Cottonwood South)	0403021TP001	No	Treatment Plant	-	-	Inactive
10T-568 Treatment (Cottonwood North)	0403021TP002	No	Treatment Plant	-	-	Inactive

1 - 17 of 17

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
10T-556 Treatment (Cottonwood South)	0403021TP001	Hypochlorination, Post	Disinfection
10T-556 Treatment (Cottonwood South)	0403021TP001	Fluoridation	Other
10T-568 Treatment (Cottonwood North)	0403021TP002	Hypochlorination, Post	Disinfection
10T-568 Treatment (Cottonwood North)	0403021TP002	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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