Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	NN3510007
PWS Name	Thoreau High School
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	Tribal
Is Wholesaler?	No
Population Served	746
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
TT	Treatment Technique, Level 2 Assessment (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	35100072B800082024	Returned to Compliance	01-AUG-2024	-	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	351000775750082024	Open	01-AUG-2024	-	No
MCL	Maximum Contaminant Level Violation, E. coli (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	35100071A800072024	Returned to Compliance	01-JUL-2024	31-JUL-2024	Yes
TT	Treatment Technique, Level 2 Assessment (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	35100072B800072024	Returned to Compliance	01-JUL-2024	-	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	3510007757500720241	Open	01-JUL-2024	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	3510007757500720240	Open	01-JUL-2024	-	No
RPT	Report Sample Result/Fail Monitor (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	35100074B800052024	Returned to Compliance	01-MAY-2024	-	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	351000752500012024	Returned to Compliance	01-JAN-2024	-	No
MR	Monitoring, Regular	Nitrate Rule	Nitrite	351000703104112024	Known	01-JAN-2024	31-DEC-2024	No
TT	Treatment Technique, Level 2 Assessment (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	35100072B8000102022	Returned to Compliance	01-OCT-2022	-	Yes
TT	Treatment Technique, Level 2 Assessment (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	35100072B800082022	Returned to Compliance	01-AUG-2022	-	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	3510007757500820221	Open	01-AUG-2022	-	No
MCL	Maximum Contaminant Level Violation, E. coli (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	35100071A800082022	Returned to Compliance	01-AUG-2022	31-AUG-2022	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	3510007757500820220	Open	01-AUG-2022	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	351000771700072022	Returned to Compliance	01-JUL-2022	-	No
RPT	Report Sample Result/Fail Monitor (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	35100074B800062022	Returned to Compliance	01-JUN-2022	-	No
RPT	Report Sample Result/Fail Monitor (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	35100074B800052022	Returned to Compliance	01-MAY-2022	-	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	35100073A8000122021	Returned to Compliance	01-DEC-2021	31-DEC-2021	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	3510007270999102021	Returned to Compliance	01-OCT-2021	31-DEC-2021	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	35100073A800092021	Returned to Compliance	01-SEP-2021	30-SEP-2021	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	35100073A800082021	Returned to Compliance	01-AUG-2021	31-AUG-2021	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	351000771700072021	Returned to Compliance	01-JUL-2021	-	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	35100073A800072021	Returned to Compliance	01-JUL-2021	31-JUL-2021	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	35100073A800042021	Returned to Compliance	01-APR-2021	30-APR-2021	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	351000727099942021	Returned to Compliance	01-APR-2021	30-JUN-2021	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	35100073A800032021	Returned to Compliance	01-MAR-2021	31-MAR-2021	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	35100073A800022021	Returned to Compliance	01-FEB-2021	28-FEB-2021	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	351000752500012021	Returned to Compliance	01-JAN-2021	-	No
MR	Monitoring, Regular	Nitrate Rule	Nitrite	351000703104112021	Returned to Compliance	01-JAN-2021	31-DEC-2021	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	351000703104012021	Returned to Compliance	01-JAN-2021	31-DEC-2021	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	351000752500012018	Returned to Compliance	01-JAN-2018	-	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	35100073A800012017	Returned to Compliance	01-JAN-2017	31-JAN-2017	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	351000723310022016	Returned to Compliance	01-FEB-2016	29-FEB-2016	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	351000727295012016	Returned to Compliance	01-JAN-2016	31-DEC-2016	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	351000727245612016	Returned to Compliance	01-JAN-2016	31-DEC-2016	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Beta Particle Activity	3510007034100102014	Returned to Compliance	01-OCT-2014	31-DEC-2014	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Beta Particle Activity	351000703410072014	Returned to Compliance	01-JUL-2014	30-SEP-2014	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Beta Particle Activity	351000703410042014	Returned to Compliance	01-APR-2014	30-JUN-2014	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	351000723310042014	Returned to Compliance	01-APR-2014	30-APR-2014	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Beta Particle Activity	351000703410012014	Returned to Compliance	01-JAN-2014	31-MAR-2014	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	351000723310012014	Returned to Compliance	01-JAN-2014	31-JAN-2014	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	3510007233100112013	Returned to Compliance	01-NOV-2013	30-NOV-2013	No
MR	Failure Submit IDSE/Subpart V Plan Rpt	Stage 2 Disinfectants and Disinfection Byproducts Rule	Stage 2 Disinfectants and Disinfection Byproducts Rule	3510007350600102013	Returned to Compliance	01-OCT-2013	-	No

1 - 43 of 43

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
3510007FJ04212542176	3510007757500720241	SFJ	State Formal Notice of Violation issued	21-APR-2025	State	NOV issued for failure to prepare and post a public notice regarding an ecoli incident during July 2024, Level 2 Assessment, and PN during August 2024.
3510007FJ04212542175	3510007757500720240	SFJ	State Formal Notice of Violation issued	21-APR-2025	State	NOV issued for failure to prepare and post a public notice regarding an ecoli incident during July 2024, Level 2 Assessment, and PN during August 2024.
3510007FJ04212542177	351000775750082024	SFJ	State Formal Notice of Violation issued	21-APR-2025	State	NOV issued for failure to prepare and post a public notice regarding an ecoli incident during July 2024, Level 2 Assessment, and PN during August 2024.
3510007FJ04212542179	351000703104112024	SFJ	State Formal Notice of Violation issued	21-APR-2025	State	NOV, PN required.
3510007OX09112442131	35100071A800072024	SOX	State Compliance achieved	11-SEP-2024	State	All samples were negative for the month of September following july and august positive samples.
3510007OX09062442130	35100072B800072024	SOX	State Compliance achieved	06-SEP-2024	State	Level 2 assessment conducted by NNEPA/PWSSP.
3510007OX09062442132	35100072B800082024	SOX	State Compliance achieved	06-SEP-2024	State	Level 2 assessment conducted by NNEPA/PWSSP.
3510007OX08062442038	351000752500012024	SOX	State Compliance achieved	06-AUG-2024	State	RTC, sample results received for the 8/6/2024 set of 10 samples.
3510007OX06172441211	35100074B800052024	SOX	State Compliance achieved	17-JUN-2024	State	May 2024 RTCR Reporting. Return-To-Compliance. Lab results submitted LATE 06/17/2024.
3510007FJ05082340278	35100072B8000102022	SFJ	State Formal Notice of Violation issued	08-MAY-2023	State	NOV issued for failure to complete or report a triggered Level 2 assessment.
3510007OX04252341322	35100072B800082022	SOX	State Compliance achieved	25-APR-2023	State	Level 2 Assessment Completed by staff.
3510007FJ01312339857	351000771700072022	SFJ	State Formal Notice of Violation issued	31-JAN-2023	State	NOV issued for failure to prepare and distribute a 2021 CCR.
3510007FJ01312340277	3510007757500820221	SFJ	State Formal Notice of Violation issued	31-JAN-2023	State	NOV, PN required.
3510007FJ01312340276	3510007757500820220	SFJ	State Formal Notice of Violation issued	31-JAN-2023	State	NOV, PN required.
3510007OX12212240021	351000771700072021	SOX	State Compliance achieved	21-DEC-2022	State	2020 CCR Received.
3510007OX09122239683	35100071A800082022	SOX	State Compliance achieved	12-SEP-2022	State	2022 August RTCR MCL. Return To Compliance. Full sample set collected 09/12/2022.
3510007OX07272239549	35100074B800052022	SOX	State Compliance achieved	27-JUL-2022	State	2022 May Reporting. Return To Compliance. Lab result submitted LATE 07/27/2022.
3510007OX07272239550	35100074B800062022	SOX	State Compliance achieved	27-JUL-2022	State	2022 June Reporting. Return To Compliance. Lab result submitted LATE 07/27/2022.
3510007OX05252240023	351000703104012021	SOX	State Compliance achieved	25-MAY-2022	State	2021 Nitrate Monitoring. Return-To-Compliance. Full sample set collected 05/25/2022.
3510007OX05252240024	351000703104112021	SOX	State Compliance achieved	25-MAY-2022	State	2021 Nitrite Monitoring. Return-To-Compliance. Full sample set collected 05/25/2022.
3510007OX04182239397	3510007270999102021	SOX	State Compliance achieved	18-APR-2022	State	2021 December Chlorine Residual. Return To Compliance. Lab result submitted LATE 04/18/2022.
3510007OX04182239396	351000752500012021	SOX	State Compliance achieved	18-APR-2022	State	2021 Lead/Copper. Return To Compliance. Lab results submitted LATE 04/18/2022.
3510007OX01112239137	35100073A8000122021	SOX	State Compliance achieved	11-JAN-2022	State	2021 December RTCR M/R. Return To Compliance. Full sample set collected 01/11/2022.
3510007OX10122138986	35100073A800072021	SOX	State Compliance achieved	12-OCT-2021	State	2021 July RTCR M/R. Return To Compliance. Full sample set collected 10/12/2021.
3510007OX10122138988	35100073A800092021	SOX	State Compliance achieved	12-OCT-2021	State	2021 September RTCR M/R. Return To Compliance. Full sample set collected 10/12/2021.
3510007OX10122138987	35100073A800082021	SOX	State Compliance achieved	12-OCT-2021	State	2021 August RTCR M/R. Return To Compliance. Full sample set collected 10/12/2021.
3510007FJ07072138755	35100073A800022021	SFJ	State Formal Notice of Violation issued	07-JUL-2021	State	NOV issued for failure to collect the February and March bactee samples.
3510007FJ07072138756	35100073A800032021	SFJ	State Formal Notice of Violation issued	07-JUL-2021	State	NOV issued for failure to collect the February and March bactee samples.
3510007OX06152138801	351000727099942021	SOX	State Compliance achieved	15-JUN-2021	State	2021 April Residual. Return To Compliance. Disinfectant residual submitted 06/15/2021.
3510007OX05192138800	35100073A800042021	SOX	State Compliance achieved	19-MAY-2021	State	2021 April RTCR. Return To Compliance. Full sample set collected 05/19/2021.
3510007OX07101937134	351000752500012018	SOX	State Compliance achieved	10-JUL-2019	State	2018 Pb/Cu M/R. RTC, sampled full Lead/Copper set on 07/10/2019.
3510007OX08211734816	351000727295012016	SOX	State Compliance achieved	21-AUG-2017	State	DBPs sampled on 8/21/2017.
3510007OX08211734815	351000727245612016	SOX	State Compliance achieved	21-AUG-2017	State	DBPs sampled on 8/21/2017.
3510007OX03011734733	35100073A800012017	SOX	State Compliance achieved	01-MAR-2017	State	Subsequent reporting of required results.
3510007OX05201634846	351000723310022016	SOX	State Compliance achieved	20-MAY-2016	State	February 2016 coliform results received on May 12, 2016. Subsequent monthly coliform results collected.
3510007OX05111534901	3510007034100102014	SOX	State Compliance achieved	11-MAY-2015	State	Last sampled on 3/27/15; monitoring frequency decreased to every 3 years based on sampling results.
3510007OX04141534916	351000703410012014	SOX	State Compliance achieved	14-APR-2015	State	Beta photon emitters sampled on August 26, 2014
3510007OX04141534910	351000703410042014	SOX	State Compliance achieved	14-APR-2015	State	Beta photon emitters sampled on August 26, 2014
3510007OX04141534908	351000703410072014	SOX	State Compliance achieved	14-APR-2015	State	Beta photon emitters sampled on August 26, 2014
3510007OX01011534827	3510007350600102013	SOX	State Compliance achieved	01-JAN-2015	State	System transferred to USEPA in November 2013.
3510007OX08141434914	351000723310042014	SOX	State Compliance achieved	14-AUG-2014	State	Monthly samples have been collected since April 2014. Results were absent for Total Coliforms.
3510007OX08141434920	351000723310012014	SOX	State Compliance achieved	14-AUG-2014	State	Monthly coliform samples have been collected (except April 2014) since January 2014.
3510007OX02131434986	3510007233100112013	SOX	State Compliance achieved	13-FEB-2014	State	Collected subsequent monthly coliform samples. Results were absent.

1 - 43 of 43

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
Well 1	3510007GW001	Yes	Well	Ground water	Permanent	Active
Entry Point for Well 1 (GW001)	3510007EP001	No	Common Headers	-	-	Active
Distribution System for PWS NN3510007	3510007DS001	No	Distribution System/Zone	-	-	Active
HP Tank 1	3510007HP001	No	Pressure Control	-	-	Active
HP Tank 2	3510007HP002	No	Pressure Control	-	-	Active
HP Tank 3	3510007HP003	No	Pressure Control	-	-	Active
HP Tank 4	3510007HP004	No	Pressure Control	-	-	Active
Storage Tank	3510007ST001	No	Storage	-	-	Active
Treatment Plant	3510007TP001	No	Treatment Plant	-	-	Active

1 - 9 of 9

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
Treatment Plant	3510007TP001	Filtration, Cartridge	Inorganics removal
Treatment Plant	3510007TP001	Ion Exchange	Softening (hardness removal)
Treatment Plant	3510007TP001	Hypochlorination, 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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