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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.

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Violations

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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 and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	37112	Known	01-JUL-2025	30-SEP-2025	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	37111	Open	05-MAR-2024	-	No
TT	Treatment Technique, Corrective/Expedited Actions (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	37110	Open	01-JUL-2023	-	Yes
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	37109	Returned to Compliance	01-JUL-2022	31-JUL-2022	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	37107	Returned to Compliance	11-FEB-2010	-	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	37106	Returned to Compliance	01-OCT-2007	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	37104	Open	06-JUN-2004	-	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	37004	Returned to Compliance	01-JAN-2004	31-MAR-2004	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	36903	Open	20-MAR-2003	-	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	36803	Known	01-JAN-2003	31-JAN-2003	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	36697	Known	01-JUL-1997	31-JUL-1997	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	45791	Known	01-SEP-1991	30-SEP-1991	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	45691	Known	01-AUG-1991	31-AUG-1991	Yes

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Enforcement Actions

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Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
1222	37112	SIE	State Public Notification requested	23-OCT-2025	State	-
1220	37110	SIE	State Public Notification requested	09-FEB-2024	State	-
1218	37109	SOX	State Compliance achieved	31-MAY-2023	State	System has returned to a routine RTCR sampling schedule and has returned to compliance with regard to this violation.
1212	37107	SO0	State no longer subject to Rule	15-NOV-2011	State	No longer subject to rule.
1211	37104	SO6	State Intentional no-action	17-JUN-2011	State	SO6 according to PN Guidance 2-22-2011.
1211	36903	SO6	State Intentional no-action	17-JUN-2011	State	SO6 according to PN Guidance 2-22-2011.
1210	37106	SOX	State Compliance achieved	28-OCT-2010	State	-
1206	37004	SOX	State Compliance achieved	09-JAN-2009	State	-
603	36803	SIE	State Public Notification requested	17-FEB-2003	State	-
1097	36697	SIF	State Public Notification received	25-SEP-1997	State	-
3E91	45791	SIA	State Violation/Reminder Notice	07-OCT-1991	State	-
6E91	45691	SIA	State Violation/Reminder Notice	08-AUG-1991	State	-

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All Facilities

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Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
CC FROM BELCOURT RURAL WATER	11173	Yes	Consecutive Connection	Ground water	Emergency	Active
WELL #1	878	Yes	Well	Ground water	Permanent	Active
WELL #9	2010	Yes	Well	Ground water	Permanent	Active
WELL #8	1997	Yes	Well	Ground water	Permanent	Active
WELL #7	1972	Yes	Well	Ground water	Permanent	Active
WELL #4	1899	Yes	Well	Ground water	Permanent	Active
WELL #2	1569	Yes	Well	Ground water	Permanent	Active
WELL #11	12167	Yes	Well	Ground water	Permanent	Active
WELL #10	11276	Yes	Well	Ground water	Permanent	Active
WELL #3	10861	Yes	Well	Ground water	Permanent	Active
COMMON HEADER	11727	No	Common Headers	-	-	Active
DUNSEITH CITY OF	4296	No	Distribution System/Zone	-	-	Active
IDSE FACILITY	11514	No	Distribution System/Zone	-	-	Inactive
SAMPLE STATION	2560	No	Sampling Station	-	-	Active
TREATMENT PLANT	2992	No	Treatment Plant	-	-	Active

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
TREATMENT PLANT	2992	Hypochlorination, Post	Disinfection

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