Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	MO4010170
PWS Name	CLARKTON PWS
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	1124
County Served	Dunklin

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
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	5414949	Returned to Compliance	01-JUN-2025	30-JUN-2025	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Ground Water Rule	Groundwater Rule	5414947	Known	01-DEC-2024	31-DEC-2024	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	5414946	Returned to Compliance	01-MAY-2024	31-MAY-2024	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate-Nitrite	5414948	Returned to Compliance	01-JAN-2024	31-DEC-2024	No
TT	Treatment Technique (SWTR and GWR)	Ground Water Rule	Groundwater Rule	5414943	Returned to Compliance	01-OCT-2022	31-OCT-2022	Yes
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	5414942	Returned to Compliance	01-JUN-2022	30-JUN-2022	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	5414941	Returned to Compliance	26-MAY-2022	-	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate-Nitrite	5414945	Returned to Compliance	01-JAN-2022	31-DEC-2022	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Ground Water Rule	Groundwater Rule	5414940	Returned to Compliance	01-MAY-2021	31-MAY-2021	No
TT	Treatment Technique (SWTR and GWR)	Ground Water Rule	Groundwater Rule	5414938	Returned to Compliance	01-APR-2021	30-APR-2021	Yes
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	5414937	Returned to Compliance	01-JUL-2020	-	No
TT	Treatment Technique (SWTR and GWR)	Ground Water Rule	Groundwater Rule	5414935	Returned to Compliance	01-JAN-2020	31-JAN-2020	Yes
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Ground Water Rule	Groundwater Rule	5414933	Returned to Compliance	01-DEC-2019	31-DEC-2019	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	5414934	Returned to Compliance	01-DEC-2019	31-DEC-2019	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Ground Water Rule	Groundwater Rule	5414932	Returned to Compliance	01-OCT-2018	31-OCT-2018	No
TT	Treatment Technique (SWTR and GWR)	Ground Water Rule	Groundwater Rule	5414930	Returned to Compliance	01-JUL-2017	31-JUL-2017	Yes
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	5414928	Returned to Compliance	01-NOV-2015	30-NOV-2015	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Ground Water Rule	Groundwater Rule	5414927	Returned to Compliance	01-JUL-2015	31-JUL-2015	No
TT	Treatment Technique (SWTR and GWR)	Ground Water Rule	Groundwater Rule	5414922	Returned to Compliance	01-APR-2015	30-APR-2015	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	5414921	Returned to Compliance	01-APR-2015	30-APR-2015	Yes
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	5414920	Returned to Compliance	01-JUN-2013	30-JUN-2013	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	5414919	Returned to Compliance	01-NOV-2012	30-NOV-2012	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	5414915	Returned to Compliance	01-MAY-2012	31-MAY-2012	Yes
TT	Treatment Technique (SWTR and GWR)	Ground Water Rule	Groundwater Rule	5414916	Returned to Compliance	01-MAY-2012	31-MAY-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
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	5414807	Returned to Compliance	01-JUL-2007	31-JUL-2007	Yes
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	5414603	Returned to Compliance	01-OCT-2002	31-OCT-2002	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate-Nitrite	5414703	Returned to Compliance	01-JAN-2002	31-DEC-2002	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	5414102	Returned to Compliance	01-DEC-2001	31-DEC-2001	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	5414002	Returned to Compliance	01-NOV-2001	30-NOV-2001	Yes
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	5414501	Returned to Compliance	01-JUL-2001	-	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	101	Returned to Compliance	01-MAY-2001	31-MAY-2001	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	198	Returned to Compliance	01-JUL-1998	31-JUL-1998	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	197	Returned to Compliance	01-NOV-1996	30-NOV-1996	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	98795	Returned to Compliance	01-SEP-1995	30-SEP-1995	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	87395	Returned to Compliance	01-AUG-1995	31-AUG-1995	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	76594	Returned to Compliance	01-JUL-1994	31-JUL-1994	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	109694	Returned to Compliance	01-OCT-1993	31-OCT-1993	No

1 - 38 of 38

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
96527	5414949	SIF	State Public Notification received	13-AUG-2025	State	-
96529	5414948	SOX	State Compliance achieved	14-JUL-2025	State	Per EPA compliance policy, system has RTC - VL 11/24/2025;
96520	5414947	SIF	State Public Notification received	06-FEB-2025	State	-
96517	5414946	SIF	State Public Notification received	13-AUG-2024	State	-
96512	5414945	SOX	State Compliance achieved	02-MAY-2023	State	sox vio per EPA RTC policy 08/11/2023PV
96509	5414938	SIF	State Public Notification received	28-APR-2023	State	-
96508	5414941	SOX	State Compliance achieved	27-APR-2023	State	PN received. MGM 4/28/2023;
96504	5414943	SIF	State Public Notification received	04-JAN-2023	State	-
96498	5414942	SIF	State Public Notification received	22-AUG-2022	State	-
96494	5414940	SOX	State Compliance achieved	28-JUL-2021	State	RTC per EPA policy. Alan M., 7/28/21
96484	5414937	SOX	State Compliance achieved	09-NOV-2020	State	Curr ccr comp corr sox prev vio skw 11-9-20
96479	5414935	SOX	State Compliance achieved	29-APR-2020	State	RTC per EPA policy. Alan M., 4/29/20 Added DR vio to SOX. MGM 2/3/2021;
96478	5414933	SIF	State Public Notification received	02-MAR-2020	State	-
96477	5414934	SIF	State Public Notification received	02-MAR-2020	State	-
96467	5414932	SIF	State Public Notification received	28-MAY-2019	State	-
96461	5414930	SOX	State Compliance achieved	28-SEP-2017	State	RTC per EPA policy, Alan M. 9/28/17
96454	5414928	SIF	State Public Notification received	29-JAN-2016	State	-
96449	5414927	SIF	State Public Notification received	02-OCT-2015	State	-
96447	5414922	SIF	State Public Notification received	02-OCT-2015	State	-
96445	5414921	SIF	State Public Notification received	02-OCT-2015	State	-
96428	198	SOX	State Compliance achieved	22-JAN-2014	State	-
96428	197	SOX	State Compliance achieved	22-JAN-2014	State	-
96428	87395	SOX	State Compliance achieved	22-JAN-2014	State	-
96428	98795	SOX	State Compliance achieved	22-JAN-2014	State	-
96428	109694	SOX	State Compliance achieved	22-JAN-2014	State	-
96427	5414002	SOX	State Compliance achieved	22-JAN-2014	State	-
96428	5414102	SOX	State Compliance achieved	22-JAN-2014	State	-
96428	5414603	SOX	State Compliance achieved	22-JAN-2014	State	-
96427	5414807	SOX	State Compliance achieved	22-JAN-2014	State	-
96428	5414919	SOX	State Compliance achieved	22-JAN-2014	State	-
96428	5414920	SOX	State Compliance achieved	22-JAN-2014	State	-
96428	101	SOX	State Compliance achieved	22-JAN-2014	State	-
96428	76594	SOX	State Compliance achieved	22-JAN-2014	State	-
96420	5414915	SOX	State Compliance achieved	30-SEP-2012	State	RTC PER EPA POLICY, JLW 8NOV12;
96420	5414916	SOX	State Compliance achieved	30-SEP-2012	State	RTC PER EPA POLICY, JLW 8NOV12;
#0002	#0001	EOX	Federal Compliance achieved	14-MAY-2008	ODSWeb	-
96515	5414703	SOX	State Compliance achieved	03-APR-2003	State	Per EPA compliance policy, system has RTC - VL 08/02/2024;
96102	5414501	SOX	State Compliance achieved	15-AUG-2002	State	-

1 - 38 of 38

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
WELL # 2	80191	Yes	Well	Ground water	Permanent	Active
WELL # 3	80192	Yes	Well	Ground water	Permanent	Active
DISTRIBUTION SYSTEM	86458	No	Distribution System/Zone	-	-	Active
2 HIGH SERVICE PUMPS	108526	No	Pump Facility	-	-	Inactive
CHEMICAL SAMPLES	91311	No	Sampling Station	-	-	Active
125K GAL TOWER - BAKER ST	75046	No	Storage	-	-	Active
50K GAL TOWER - WASHINGTON ST	75047	No	Storage	-	-	Active
25K GAL ELEVATED STORAGE - S MAIN	100324	No	Storage	-	-	Inactive
WELL #2 TREATMENT	109270	No	Treatment Plant	-	-	Active
WELL # 3	71060	No	Treatment Plant	-	-	Active

1 - 10 of 10

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
WELL #2 TREATMENT	109270	4-Log Treatment of Viruses	Disinfection
WELL #2 TREATMENT	109270	Hypochlorination, Post	Disinfection
WELL # 3	71060	Hypochlorination, Post	Disinfection

1 - 3 of 3

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.

Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Nav Menu

Your Drinking Water Query results from SDWIS Fed Reporting Services

Note

PWS Violation

Violations

Column Actions

Enforcement Actions

Enforcement Actions

Column Actions

PWS Facilities

All Facilities

Column Actions

PWS Treatment Processes

Treatment Processes

Column Actions