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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	6506426	Open	11-DEC-2025	-	No
RPT	Notification, Known or Potential LSL	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	6506425	Open	02-JUL-2025	-	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	6506096	Returned to Compliance	01-AUG-1996	31-AUG-1996	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	6506293	Returned to Compliance	01-OCT-1992	31-OCT-1992	Yes
MCL	Maximum Contaminant Level Violation, Acute (TCR)	Total Coliform Rule	Coliform (TCR)	6506193	Returned to Compliance	01-OCT-1992	31-OCT-1992	Yes

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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
706	6506426	SIA	State Violation/Reminder Notice	11-DEC-2025	State	-
705	6506425	SIE	State Public Notification requested	21-OCT-2025	State	-
693	6506193	SOX	State Compliance achieved	19-APR-2007	State	THIS WAS SOXED BY AN AUTOMATED PROCESS CREATED BY TAB.
693	6506293	SOX	State Compliance achieved	19-APR-2007	State	THIS WAS SOXED BY AN AUTOMATED PROCESS CREATED BY TAB.
297	6506096	SOX	State Compliance achieved	19-APR-2007	State	THIS WAS SOXED BY AN AUTOMATED PROCESS CREATED BY TAB.

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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
MOUNT VERNON WELL 0004	13899	Yes	Well	Ground water	Permanent	Active
MOUNT VERNON, CITY OF WELL 0007	13901	Yes	Well	Ground water	Permanent	Inactive
MOUNT VERNON, CITY OF WELL 0003	13900	Yes	Well	Ground water	Permanent	Inactive
MOUNT VERNON WELL 0008	13902	Yes	Well	Ground water	Permanent	Active
1.0 MG CLEARWELL	42660	No	Clear Well	-	-	Inactive
MOUNT VERNON, CITY OF DISTRIBUTION	26136	No	Distribution System/Zone	-	-	Active
WOOSTER RD BS	42664	No	Pump Facility	-	-	Active
NEW GAMBIER RD BS	42665	No	Pump Facility	-	-	Active
MARTINSBURG RD BS	42666	No	Pump Facility	-	-	Active
Mount Vernon, City Of P01	94173	No	Sampling Station	-	-	Inactive
WOOSTER RD TANK 0.15 MG	42662	No	Storage	-	-	Active
EAST SIDE TANK 0.4 MG	42663	No	Storage	-	-	Active
NEW GAMBIER 2MG RESERVOIR	42669	No	Storage	-	-	Active
1.0 MG CLEARWELL	46172	No	Storage	-	-	Active
NEW GAMBIER TANK	42731	No	Storage	-	-	Inactive
MOUNT VERNON WTP	4394	No	Treatment Plant	-	-	Active

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
MOUNT VERNON WTP	4394	Coagulation	Softening (hardness removal)
MOUNT VERNON WTP	4394	Lime - Soda Ash Addition	Softening (hardness removal)
MOUNT VERNON WTP	4394	Innovative	Softening (hardness removal)
MOUNT VERNON WTP	4394	Innovative	Softening (hardness removal)
MOUNT VERNON WTP	4394	Innovative	Softening (hardness removal)
MOUNT VERNON WTP	4394	Filtration, Rapid Sand	Softening (hardness removal)
MOUNT VERNON WTP	4394	Chlorine Dioxide	Disinfection
MOUNT VERNON WTP	4394	Innovative	Disinfection
MOUNT VERNON WTP	4394	Innovative	Other

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