Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	OR4100546
PWS Name	MOUNT VERNON, CITY OF
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	510
County Served	Grant

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	903417619	Returned to Compliance	01-JUL-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	903417612	Returned to Compliance	24-DEC-2015	-	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	903417611	Returned to Compliance	01-OCT-2015	31-OCT-2015	Yes
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	3412708	Returned to Compliance	01-NOV-2007	30-NOV-2007	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	3412608	Returned to Compliance	01-OCT-2007	31-OCT-2007	Yes
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	3412306	Returned to Compliance	01-AUG-2006	31-AUG-2006	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	HEXACHLOROBENZENE	3412908	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Methoxychlor	3413008	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Total Polychlorinated Biphenyls (PCB)	3412808	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	3405303	Returned to Compliance	01-JUL-2003	31-JUL-2003	No
TT	OCCT/SOWT Treatment Installation/Demonstration	Lead and Copper Rule	Lead and Copper Rule	411400	Returned to Compliance	02-JAN-2002	-	Yes
MR	Monitoring, Regular	Arsenic Rule	Arsenic	3405705	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor epoxide	3411105	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor	3411005	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	LASSO	3410905	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Atrazine	3410805	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Carbofuran	3410705	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Hexachlorocyclopentadiene	3410605	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dinoseb	3410505	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Picloram	3410405	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) phthalate	3410305	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Simazine	3410205	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	OXAMYL	3410105	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) adipate	3410005	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Glyphosate	3409905	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endothall	3409805	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Diquat	3409705	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dalapon	3409605	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Toxaphene	3409505	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Methoxychlor	3409405	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	BHC-GAMMA	3409305	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endrin	3409205	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Inorganic Chemicals	Thallium, Total	3406805	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Inorganic Chemicals	Beryllium, Total	3406705	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Inorganic Chemicals	Antimony, Total	3406605	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	ETHYLENE DIBROMIDE	3411905	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	3407205	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	3407105	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Pentachlorophenol	3411605	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Benzo(a)pyrene	3411505	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	HEXACHLOROBENZENE	3411405	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Inorganic Chemicals	Selenium	3406905	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Nitrate Rule	Nitrite	3407005	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	3404803	Returned to Compliance	01-JAN-2002	31-DEC-2002	No
MR	Monitoring, Regular	Inorganic Chemicals	Nickel	3406405	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Inorganic Chemicals	Mercury	3406305	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Inorganic Chemicals	Fluoride	3406205	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Inorganic Chemicals	CYANIDE	3406105	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4,5-TP	3411305	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4-D	3411205	Returned to Compliance	01-JAN-2002	31-DEC-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
667	903417619	SOX	State Compliance achieved	21-JUL-2025	State	-
666	903417611	SOX	State Compliance achieved	09-AUG-2016	State	-
665	903417612	SOX	State Compliance achieved	14-DEC-2015	State	-
658	411400	SO0	State no longer subject to Rule	25-DEC-2010	State	-
655	3412808	SOX	State Compliance achieved	13-NOV-2010	State	-
657	3413008	SOX	State Compliance achieved	13-NOV-2010	State	-
656	3412908	SOX	State Compliance achieved	13-NOV-2010	State	-
579	3412708	SOX	State Compliance achieved	26-DEC-2007	State	-
649	3412608	SOX	State Compliance achieved	23-NOV-2007	State	-
585	3405705	SOX	State Compliance achieved	06-DEC-2006	State	-
648	3412005	SOX	State Compliance achieved	06-DEC-2006	State	-
586	3405805	SOX	State Compliance achieved	06-DEC-2006	State	-
587	3405905	SOX	State Compliance achieved	06-DEC-2006	State	-
588	3406005	SOX	State Compliance achieved	06-DEC-2006	State	-
589	3406105	SOX	State Compliance achieved	06-DEC-2006	State	-
590	3406205	SOX	State Compliance achieved	06-DEC-2006	State	-
591	3406305	SOX	State Compliance achieved	06-DEC-2006	State	-
592	3406405	SOX	State Compliance achieved	06-DEC-2006	State	-
594	3406605	SOX	State Compliance achieved	06-DEC-2006	State	-
595	3406705	SOX	State Compliance achieved	06-DEC-2006	State	-
596	3406805	SOX	State Compliance achieved	06-DEC-2006	State	-
597	3406905	SOX	State Compliance achieved	06-DEC-2006	State	-
598	3407005	SOX	State Compliance achieved	06-DEC-2006	State	-
599	3407105	SOX	State Compliance achieved	06-DEC-2006	State	-
600	3407205	SOX	State Compliance achieved	06-DEC-2006	State	-
601	3407305	SOX	State Compliance achieved	06-DEC-2006	State	-
602	3407405	SOX	State Compliance achieved	06-DEC-2006	State	-
603	3407505	SOX	State Compliance achieved	06-DEC-2006	State	-
604	3407605	SOX	State Compliance achieved	06-DEC-2006	State	-
605	3407705	SOX	State Compliance achieved	06-DEC-2006	State	-
606	3407805	SOX	State Compliance achieved	06-DEC-2006	State	-
607	3407905	SOX	State Compliance achieved	06-DEC-2006	State	-
608	3408005	SOX	State Compliance achieved	06-DEC-2006	State	-
609	3408105	SOX	State Compliance achieved	06-DEC-2006	State	-
610	3408205	SOX	State Compliance achieved	06-DEC-2006	State	-
611	3408305	SOX	State Compliance achieved	06-DEC-2006	State	-
612	3408405	SOX	State Compliance achieved	06-DEC-2006	State	-
613	3408505	SOX	State Compliance achieved	06-DEC-2006	State	-
614	3408605	SOX	State Compliance achieved	06-DEC-2006	State	-
615	3408705	SOX	State Compliance achieved	06-DEC-2006	State	-
616	3408805	SOX	State Compliance achieved	06-DEC-2006	State	-
617	3408905	SOX	State Compliance achieved	06-DEC-2006	State	-
618	3409005	SOX	State Compliance achieved	06-DEC-2006	State	-
619	3409105	SOX	State Compliance achieved	06-DEC-2006	State	-
620	3409205	SOX	State Compliance achieved	06-DEC-2006	State	-
621	3409305	SOX	State Compliance achieved	06-DEC-2006	State	-
622	3409405	SOX	State Compliance achieved	06-DEC-2006	State	-
623	3409505	SOX	State Compliance achieved	06-DEC-2006	State	-
624	3409605	SOX	State Compliance achieved	06-DEC-2006	State	-
625	3409705	SOX	State Compliance achieved	06-DEC-2006	State	-

1 - 50 of 89

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
HOLMBERG WELL/IG	26838	Yes	Infiltration Gallery	Ground water under the influence of surface water	Emergency	Inactive
JONES WELL	2198	Yes	Well	Ground water	Permanent	Active
HIGH SCHOOL WELL	2197	Yes	Well	Ground water	Permanent	Active
CLARK SPRING	6669	Yes	Spring	Ground water	Emergency	Inactive
COMMON HEADER FOR WTP-B	20510	No	Common Headers	-	-	Active
COMMON HEADER FOR WTP-C	20511	No	Common Headers	-	-	Active
COMMON HEADER FOR WTP-A	19285	No	Common Headers	-	-	Inactive
DISTRIBUTION SYSTEM	7133	No	Distribution System/Zone	-	-	Active
EP FOR HIGH SCHOOL WELL	17511	No	Sampling Station	-	-	Active
EP FOR JONES WELL	17512	No	Sampling Station	-	-	Active
EP FOR CLARK SPRING	12679	No	Sampling Station	-	-	Inactive
TP FOR HIGH SCHOOL WELL	1521	No	Treatment Plant	-	-	Active
TP FOR JONES WELL	1522	No	Treatment Plant	-	-	Active
TP FOR CLARK SPRING	273	No	Treatment Plant	-	-	Inactive

1 - 14 of 14

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TP FOR HIGH SCHOOL WELL	1521	Innovative	Other
TP FOR JONES WELL	1522	Innovative	Other
TP FOR CLARK SPRING	273	Innovative	Other

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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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