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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
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	8448934	Open	10-DEC-2025	-	No
RPT	Notification, Known or Potential LSL	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	8448933	Open	02-JUL-2025	-	No
RPT	LSL Reporting	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	8448931	Returned to Compliance	17-OCT-2024	-	No
TT	LSL Inventory	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	8448930	Returned to Compliance	17-OCT-2024	-	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	8448919	Returned to Compliance	01-JUL-2013	30-SEP-2013	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	8448918	Returned to Compliance	01-APR-2013	30-JUN-2013	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	8448917	Returned to Compliance	01-JAN-2013	31-MAR-2013	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	8448916	Returned to Compliance	01-OCT-2012	31-DEC-2012	Yes
MR	Failure Submit IDSE/Subpart V Plan Rpt	Stage 2 Disinfectants and Disinfection Byproducts Rule	Stage 2 Disinfectants and Disinfection Byproducts Rule	8448914	Returned to Compliance	01-OCT-2011	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	8448913	Returned to Compliance	01-JUL-2011	-	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	8447607	Returned to Compliance	01-FEB-2007	28-FEB-2007	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	8447506	Returned to Compliance	01-OCT-2005	-	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	1512201	Returned to Compliance	01-JUL-2001	-	No
MR	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	Lead and Copper Rule	1334093	Returned to Compliance	01-JAN-1993	-	No

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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
2111543	8448934	SIA	State Violation/Reminder Notice	10-DEC-2025	State	-
2111542	8448933	SIE	State Public Notification requested	21-OCT-2025	State	-
2111538	8448931	SIA	State Violation/Reminder Notice	03-SEP-2025	State	THIS WAS ADL WAS ADDED USING AN AUTOMATED PROCESS CREATED BY TAB.
2111537	8448930	SOX	State Compliance achieved	15-AUG-2025	State	-
2111524	8448919	SIF	State Public Notification received	12-MAR-2014	State	-
2111523	8448916	SOX	State Compliance achieved	09-OCT-2013	State	-
2111523	8448918	SOX	State Compliance achieved	09-OCT-2013	State	-
2111523	8448917	SOX	State Compliance achieved	09-OCT-2013	State	-
2111515	8448914	SOX	State Compliance achieved	08-NOV-2011	State	-
2111513	8448913	SOX	State Compliance achieved	21-SEP-2011	State	-
2111208	8447506	SOX	State Compliance achieved	22-JAN-2008	State	-
2111107	8447607	SOX	State Compliance achieved	04-JAN-2008	State	THIS WAS SOXED BY AN AUTOMATED PROCESS CREATED BY TAB.
2111307	1512201	SOX	State Compliance achieved	12-JUL-2007	State	-
194	1334093	SOX	State Compliance achieved	01-NOV-1993	State	-

• 1 - 14 of 14

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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 COLUMBUS PUBLIC WATER SYSTEM	21110	Yes	Consecutive Connection	Surface water	Permanent	Active
SANITARY DISTRICT 4 DISTRIBUTION	24644	No	Distribution System/Zone	-	-	Active
SANITARY DISTRICT 4	31692	No	Other	-	-	Active
Sanitary District No 4 P01	147175	No	Sampling Station	-	-	Inactive
SANITARY DISTRICT NO 4	2978	No	Treatment Plant	-	-	Inactive

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Treatment Processes

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

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