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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
MCL	Maximum Contaminant Level Violation, E. coli (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	8406118	Returned to Compliance	01-SEP-2025	30-SEP-2025	Yes
MR	Lead Consumer Notice	Lead and Copper Rule	Lead and Copper Rule	8406117	Open	01-OCT-2024	-	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	8406116	Returned to Compliance	01-JUL-2020	-	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	8406115	Returned to Compliance	01-JUL-2019	-	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	8406114	Returned to Compliance	01-JUL-2013	31-JUL-2013	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	8406113	Returned to Compliance	01-MAY-2013	31-MAY-2013	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	8406110	Returned to Compliance	01-SEP-2012	30-SEP-2012	Yes
MR	Monitoring, Routine (IDSE)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Stage 2 Disinfectants and Disinfection Byproducts Rule	#0001	Returned to Compliance	01-APR-2008	-	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	197	Known	01-NOV-1996	30-NOV-1996	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	106296	Returned to Compliance	01-OCT-1995	31-OCT-1995	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	103095	Returned to Compliance	01-OCT-1994	31-OCT-1994	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	31694	Returned to Compliance	01-MAR-1994	31-MAR-1994	Yes
MR	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	Lead and Copper Rule	193	Returned to Compliance	11-OCT-1993	-	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	810993	Returned to Compliance	01-AUG-1993	31-AUG-1993	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	1010193	Returned to Compliance	01-OCT-1992	31-OCT-1992	Yes
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	1323591	Known	01-MAY-1991	31-MAY-1991	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	1323491	Known	01-APR-1991	30-APR-1991	No

• 1 - 17 of 17

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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
1128	8406118	SIF	State Public Notification received	30-SEP-2025	State	-
1124	8406115	SOX	State Compliance achieved	09-NOV-2020	State	Curr ccr comp corr sox prev vio skw 11-9-20
1124	8406116	SOX	State Compliance achieved	09-NOV-2020	State	Curr ccr comp corr sox prev vio skw 11-9-20
1122	8406110	SOX	State Compliance achieved	22-JAN-2014	State	-
1122	1010193	SOX	State Compliance achieved	22-JAN-2014	State	-
1122	810993	SOX	State Compliance achieved	22-JAN-2014	State	-
1122	31694	SOX	State Compliance achieved	22-JAN-2014	State	-
1122	106296	SOX	State Compliance achieved	22-JAN-2014	State	-
1122	103095	SOX	State Compliance achieved	22-JAN-2014	State	-
1121	8406113	SOX	State Compliance achieved	27-DEC-2013	State	RTC per EPA policy BCW 12/27/2013
1121	8406114	SOX	State Compliance achieved	27-DEC-2013	State	RTC per EPA policy BCW 12/27/2013
#0002	#0001	EOX	Federal Compliance achieved	09-MAY-2008	ODSWeb	-
397	197	SIF	State Public Notification received	04-JAN-1997	State	-
893	193	SOX	State Compliance achieved	10-OCT-1993	State	-
491	1323591	SFG	State Public Notification issued	25-JUN-1991	State	-
591	1323491	SFG	State Public Notification issued	29-MAY-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 1 DUNKLIN CO PWSD #1 MO4024206	105903	Yes	Consecutive Connection	Ground water	Emergency	Active
WELL # 6	80281	Yes	Well	Ground water	Permanent	Active
WELL # 5	80277	Yes	Well	Ground water	Permanent	Active
WELL # 4	80276	Yes	Well	Ground water	Permanent	Active
WELL # 3	80278	Yes	Well	Ground water	Other	Inactive
WELL # 1	80280	Yes	Well	Ground water	Other	Active
WELL # 2	80279	Yes	Well	Ground water	Emergency	Active
DISTRIBUTION SYSTEM	86489	No	Distribution System/Zone	-	-	Active
CHEMICAL SAMPLES	91342	No	Sampling Station	-	-	Active
150K GAL ELEVATED TANK #1	75093	No	Storage	-	-	Active
500K GAL TANK #2	75094	No	Storage	-	-	Active
WELL # 4	71129	No	Treatment Plant	-	-	Active
WELL # 5	71130	No	Treatment Plant	-	-	Active
WELL # 6	73162	No	Treatment Plant	-	-	Active
WELL # 2	71132	No	Treatment Plant	-	-	Inactive
WELL # 1	71133	No	Treatment Plant	-	-	Inactive

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
WELL # 4	71129	Hypochlorination, Post	Disinfection
WELL # 5	71130	Hypochlorination, Post	Disinfection
WELL # 2	71132	Hypochlorination, Post	Disinfection
WELL # 1	71133	Hypochlorination, Post	Disinfection
WELL # 6	73162	Hypochlorination, Post	Disinfection

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