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PWS ID	MO2036165
PWS Name	LAKE THUNDERHEAD
PWS Type	Community water system
Owner Type	Private
Primary Source	Surface water purchased
Primacy Type	State
Is Wholesaler?	No
Population Served	585
County Served	Putnam

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	135	Returned to Compliance	01-NOV-2025	30-NOV-2025	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	134	Returned to Compliance	01-JUL-2024	-	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	133	Returned to Compliance	01-JUL-2023	-	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	132	Returned to Compliance	01-OCT-2021	31-OCT-2021	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	131	Returned to Compliance	01-JUN-2021	30-JUN-2021	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	130	Returned to Compliance	01-NOV-2020	30-NOV-2020	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	129	Returned to Compliance	01-JUL-2020	-	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	128	Returned to Compliance	01-NOV-2019	30-NOV-2019	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	127	Returned to Compliance	01-JUL-2019	31-JUL-2019	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	124	Returned to Compliance	01-MAR-2019	31-MAR-2019	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	125	Returned to Compliance	01-JAN-2019	31-MAR-2019	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	126	Returned to Compliance	01-JAN-2019	31-MAR-2019	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	122	Returned to Compliance	01-JAN-2017	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	121	Returned to Compliance	01-JAN-2017	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	120	Returned to Compliance	01-JUL-2016	30-SEP-2016	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	119	Returned to Compliance	01-JUL-2016	30-SEP-2016	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	118	Returned to Compliance	01-APR-2016	30-JUN-2016	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	117	Returned to Compliance	01-APR-2016	30-JUN-2016	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	116	Returned to Compliance	01-JAN-2016	31-MAR-2016	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	115	Returned to Compliance	01-JAN-2016	31-MAR-2016	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	114	Returned to Compliance	01-OCT-2015	31-DEC-2015	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	113	Returned to Compliance	01-OCT-2015	31-DEC-2015	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	111	Returned to Compliance	01-JUL-2015	30-SEP-2015	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	112	Returned to Compliance	01-JUL-2015	30-SEP-2015	Yes
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	108	Returned to Compliance	01-FEB-2013	28-FEB-2013	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	107	Returned to Compliance	01-JUL-2012	-	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	105	Returned to Compliance	01-OCT-2004	-	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
187	135	SOX	State Compliance achieved	22-DEC-2025	State	Per EPA compliance policy, system has RTC - VL 2/24/2026;
183	134	SFJ	State Formal Notice of Violation issued	06-NOV-2024	State	-
182	133	SOX	State Compliance achieved	01-NOV-2023	State	CURR CCR COMP CORR SOX'D PREV VIO SKW 11-1-23
180	132	SIA	State Violation/Reminder Notice	29-DEC-2021	State	Chronic monitoring letter sent to system. MGM 1/13/2022;
180	131	SIA	State Violation/Reminder Notice	29-DEC-2021	State	Chronic monitoring letter sent to system. MGM 1/13/2022;
180	130	SIA	State Violation/Reminder Notice	29-DEC-2021	State	Chronic monitoring letter sent to system. MGM 1/13/2022;
166	119	SIF	State Public Notification received	16-DEC-2020	State	Combined PN received. MGM 12/17/2020;
166	120	SIF	State Public Notification received	16-DEC-2020	State	Combined PN received. MGM 12/17/2020;
165	121	SOX	State Compliance achieved	15-DEC-2020	State	PN received. MGM 12/17/2020;
165	122	SOX	State Compliance achieved	15-DEC-2020	State	PN received. MGM 12/17/2020;
164	129	SOX	State Compliance achieved	09-NOV-2020	State	Curr ccr comp corr sox prev vio skw 11-9-20
163	128	SIF	State Public Notification received	10-SEP-2020	State	-
160	125	SIF	State Public Notification received	10-SEP-2020	State	-
160	126	SIF	State Public Notification received	10-SEP-2020	State	-
162	127	SIF	State Public Notification received	10-SEP-2020	State	-
161	124	SIF	State Public Notification received	10-SEP-2020	State	-
145	113	SOX	State Compliance achieved	01-FEB-2017	State	RTC per EPA policy 02/01/17 PV;
145	114	SOX	State Compliance achieved	01-FEB-2017	State	RTC per EPA policy 02/01/17 PV;
145	115	SOX	State Compliance achieved	01-FEB-2017	State	RTC per EPA policy 02/01/17 PV;
145	116	SOX	State Compliance achieved	01-FEB-2017	State	RTC per EPA policy 02/01/17 PV;
145	117	SOX	State Compliance achieved	01-FEB-2017	State	RTC per EPA policy 02/01/17 PV;
145	111	SOX	State Compliance achieved	01-FEB-2017	State	RTC per EPA policy 02/01/17 PV;
145	118	SOX	State Compliance achieved	01-FEB-2017	State	RTC per EPA policy 02/01/17 PV;
145	112	SOX	State Compliance achieved	01-FEB-2017	State	RTC per EPA policy 02/01/17 PV;
111	108	SOX	State Compliance achieved	22-JAN-2014	State	-
110	107	SOX	State Compliance achieved	25-OCT-2013	State	RTC PER PDWB POLICY, JLW 25OCT13;
106	105	SOX	State Compliance achieved	17-AUG-2006	State	-

1 - 27 of 27

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
CC 1 UNIONVILLE MO2010804	84866	Yes	Consecutive Connection	Surface water	Other	Inactive
CC 2 PUTNAM CO PWSD #1 MO2024495	101155	Yes	Consecutive Connection	Surface water	Permanent	Active
DISTRIBUTION SYSTEM	85631	No	Distribution System/Zone	-	-	Active
CHEMICAL SAMPLES	90484	No	Sampling Station	-	-	Active
TOTAL STORAGE	75720	No	Storage	-	-	Inactive

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Treatment Processes

No treatment process(es) found. EPA has no record of treatment process(es) reported by the primacy agency for this water system.

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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