Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	MO5010550
PWS Name	MOUNTAIN GROVE PWS
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	4789
County Served	Wright

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
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	5426016	Returned to Compliance	01-JUL-2025	-	No
RPT	LSL Reporting	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	5426015	Returned to Compliance	17-OCT-2024	-	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	5426014	Returned to Compliance	01-JUL-2023	-	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	5426013	Returned to Compliance	01-JUL-2021	-	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	5426012	Returned to Compliance	01-JUL-2019	-	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	5425707	Returned to Compliance	01-AUG-2007	31-AUG-2007	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	5425607	Returned to Compliance	01-JUL-2007	31-JUL-2007	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	5425507	Returned to Compliance	01-MAY-2007	31-MAY-2007	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	5425307	Returned to Compliance	01-OCT-2006	31-OCT-2006	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	5425006	Returned to Compliance	01-AUG-2006	31-AUG-2006	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	5424906	Returned to Compliance	01-MAR-2006	31-MAR-2006	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	5424805	Returned to Compliance	01-JUL-2005	31-JUL-2005	Yes
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	5424604	Returned to Compliance	16-APR-2003	15-JUL-2003	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	5424504	Returned to Compliance	01-JAN-2003	31-MAR-2003	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	5424302	Returned to Compliance	01-NOV-2001	30-NOV-2001	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	5424002	Returned to Compliance	01-OCT-2001	31-OCT-2001	Yes
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	198	Known	01-APR-1998	30-APR-1998	No
MCL	Maximum Contaminant Level Violation, Acute (TCR)	Total Coliform Rule	Coliform (TCR)	911596	Returned to Compliance	01-SEP-1996	30-SEP-1996	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	911696	Returned to Compliance	01-SEP-1996	30-SEP-1996	Yes
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	611795	Known	01-JUN-1995	30-JUN-1995	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	81894	Returned to Compliance	01-AUG-1994	31-AUG-1994	Yes
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	1416391	Known	01-SEP-1991	30-SEP-1991	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	1132491	Known	01-FEB-1991	28-FEB-1991	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	1V85	Known	01-APR-1984	30-SEP-1985	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	153984	Returned to Compliance	01-APR-1984	30-SEP-1984	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
62923	5426016	SOX	State Compliance achieved	10-DEC-2025	State	-
62922	5425006	SIF	State Public Notification received	17-NOV-2025	State	-
62920	5426015	SIE	State Public Notification requested	16-OCT-2025	State	-
62917	5426014	SOX	State Compliance achieved	01-NOV-2023	State	CURR CCR COMP CORR SOX'D PREV VIO SKW 11-2-23
62915	5426013	SOX	State Compliance achieved	06-DEC-2021	State	CCR completed corr sox'd prev vio skw 12-6-21
62914	5426012	SOX	State Compliance achieved	26-NOV-2019	State	curr ccr comp corr RTC prev CCR vio skw 11-26-19
62911	5424302	SOX	State Compliance achieved	22-JAN-2014	State	-
62912	5424504	SOX	State Compliance achieved	22-JAN-2014	State	-
62911	5424002	SOX	State Compliance achieved	22-JAN-2014	State	-
62911	911696	SOX	State Compliance achieved	22-JAN-2014	State	-
62911	911596	SOX	State Compliance achieved	22-JAN-2014	State	-
62912	153984	SOX	State Compliance achieved	22-JAN-2014	State	-
62911	81894	SOX	State Compliance achieved	22-JAN-2014	State	-
62909	5425707	SOX	State Compliance achieved	18-MAY-2012	State	RTC letter issued from SWRO, system istalled chlorination SEH 5/18/12
62909	5425607	SOX	State Compliance achieved	18-MAY-2012	State	RTC letter issued from SWRO, system istalled chlorination SEH 5/18/12
62909	5425507	SOX	State Compliance achieved	18-MAY-2012	State	RTC letter issued from SWRO, system istalled chlorination SEH 5/18/12
62909	5425307	SOX	State Compliance achieved	18-MAY-2012	State	RTC letter issued from SWRO, system istalled chlorination SEH 5/18/12
62909	5424906	SOX	State Compliance achieved	18-MAY-2012	State	RTC letter issued from SWRO, system istalled chlorination SEH 5/18/12
62909	5424805	SOX	State Compliance achieved	18-MAY-2012	State	RTC letter issued from SWRO, system istalled chlorination SEH 5/18/12
62918	5424604	SOX	State Compliance achieved	20-AUG-2004	State	Per EPA compliance policy, system has RTC - VL 08/02/2024;
398	198	SIF	State Public Notification received	15-JUN-1998	State	-
395	611795	SIF	State Public Notification received	18-AUG-1995	State	-
3E84	1V85	SIE	State Public Notification requested	30-SEP-1984	State	-

1 - 23 of 23

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
WELL # 1	98701	Yes	Well	Ground water	Other	Inactive
WELL # 7	81442	Yes	Well	Ground water	Permanent	Active
WELL # 6	81441	Yes	Well	Ground water	Permanent	Active
WELL # 5	81440	Yes	Well	Ground water	Permanent	Active
WELL # 4	81439	Yes	Well	Ground water	Permanent	Active
WELL # 3	81438	Yes	Well	Ground water	Permanent	Active
WELL # 2	98703	Yes	Well	Ground water	Other	Inactive
DISTRIBUTION SYSTEM	87095	No	Distribution System/Zone	-	-	Active
BOOSTER PUMP WELL #7	102447	No	Pump Facility	-	-	Active
CHEMICAL SAMPLES	91948	No	Sampling Station	-	-	Active
CONTACT - FAT PIPE WELL #3	102669	No	Storage	-	-	Active
ROSEWOOD DRIVE NEAR WELL #7	76509	No	Storage	-	-	Active
TANK #1 BREYER AVE WELL #5	97054	No	Storage	-	-	Active
TANK #2 INDUSTRIAL DR WELL #6	97055	No	Storage	-	-	Active
CONTACT - FAT PIPE WELL #4	102668	No	Storage	-	-	Inactive
WELL # 3 TREATMENT	100447	No	Treatment Plant	-	-	Active
WELL # 4 TREATMENT	100448	No	Treatment Plant	-	-	Active
WELL # 5 TREATMENT	100449	No	Treatment Plant	-	-	Active
WELL # 6 TREATMENT	100450	No	Treatment Plant	-	-	Active
WELL # 7 TREATMENT	100451	No	Treatment Plant	-	-	Active

1 - 20 of 20

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
WELL # 3 TREATMENT	100447	4-Log Treatment of Viruses	Disinfection
WELL # 3 TREATMENT	100447	Hypochlorination, Post	Disinfection
WELL # 3 TREATMENT	100447	Innovative	Disinfection
WELL # 4 TREATMENT	100448	4-Log Treatment of Viruses	Disinfection
WELL # 4 TREATMENT	100448	Hypochlorination, Post	Disinfection
WELL # 4 TREATMENT	100448	Innovative	Disinfection
WELL # 5 TREATMENT	100449	4-Log Treatment of Viruses	Disinfection
WELL # 5 TREATMENT	100449	Hypochlorination, Post	Disinfection
WELL # 6 TREATMENT	100450	4-Log Treatment of Viruses	Disinfection
WELL # 6 TREATMENT	100450	Hypochlorination, Post	Disinfection
WELL # 7 TREATMENT	100451	4-Log Treatment of Viruses	Disinfection
WELL # 7 TREATMENT	100451	Hypochlorination, Post	Disinfection

1 - 12 of 12

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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