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IA7548072 · Iowa

MERRILL MUNICIPAL WATER SUPPLY

Federal fiscal 2026Q3 · EPA violation and follow-up records

Violation records shown: 12
EPA health-based flag: 0
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 12

Counties listed by EPA · Plymouth County, Iowa

Open the EPA system record

Find the utility’s annual water quality report. For current advisories, check the utility or local drinking-water authority.

Violations and what followed

Among 12 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 3,286 days. The interval uses the reporting periods and dates on file.

Monitoring or reporting · Resolved

Monitoring, RegularViolation 100222 · Nitrate · Nitrate Rule

Noncompliance period start April 1, 2021 · period end March 31, 2022 · first reported June 16, 2022 · EPA return-to-compliance field March 31, 2022

7 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
355030	April 18, 2022	Informal	State Public Notification requested
355031	April 18, 2022	Informal	State Formal Notice of Violation issued
355057	April 18, 2022	Informal	State Public Notification requested
355058	April 18, 2022	Informal	State Formal Notice of Violation issued
355093	April 18, 2022	Resolving	State Compliance achieved
355029	April 27, 2022	Informal	State Public Notification received
355056	April 27, 2022	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 118822 · Thallium, Total · Inorganic Chemicals

Noncompliance period start April 1, 2013 · period end March 31, 2022 · first reported June 16, 2022 · EPA return-to-compliance field March 31, 2022

9 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
355087	April 18, 2022	Resolving	State Compliance achieved
355025	May 18, 2022	Informal	State Public Notification requested
355026	May 18, 2022	Informal	State Formal Notice of Violation issued
355052	May 18, 2022	Informal	State Public Notification requested
355053	May 18, 2022	Informal	State Formal Notice of Violation issued
355088	May 18, 2022	Informal	State Formal Notice of Violation issued
355089	May 18, 2022	Informal	State Public Notification requested
355104	April 24, 2023	Informal	State Public Notification received
355115	May 21, 2023	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 118722 · Selenium · Inorganic Chemicals

Noncompliance period start April 1, 2013 · period end March 31, 2022 · first reported June 16, 2022 · EPA return-to-compliance field March 31, 2022

9 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
355091	April 18, 2022	Resolving	State Compliance achieved
355027	May 18, 2022	Informal	State Public Notification requested
355028	May 18, 2022	Informal	State Formal Notice of Violation issued
355054	May 18, 2022	Informal	State Public Notification requested
355055	May 18, 2022	Informal	State Formal Notice of Violation issued
355090	May 18, 2022	Informal	State Public Notification requested
355092	May 18, 2022	Informal	State Formal Notice of Violation issued
355105	April 24, 2023	Informal	State Public Notification received
355116	May 21, 2023	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 118622 · Mercury · Inorganic Chemicals

Noncompliance period start April 1, 2013 · period end March 31, 2022 · first reported June 16, 2022 · EPA return-to-compliance field March 31, 2022

9 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
355080	April 18, 2022	Resolving	State Compliance achieved
355019	May 18, 2022	Informal	State Public Notification requested
355020	May 18, 2022	Informal	State Formal Notice of Violation issued
355046	May 18, 2022	Informal	State Public Notification requested
355047	May 18, 2022	Informal	State Formal Notice of Violation issued
355078	May 18, 2022	Informal	State Public Notification requested
355079	May 18, 2022	Informal	State Formal Notice of Violation issued
355101	April 24, 2023	Informal	State Public Notification received
355112	May 21, 2023	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 118522 · Fluoride · Inorganic Chemicals

Noncompliance period start April 1, 2013 · period end March 31, 2022 · first reported June 16, 2022 · EPA return-to-compliance field March 31, 2022

9 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
355077	April 18, 2022	Resolving	State Compliance achieved
355017	May 18, 2022	Informal	State Public Notification requested
355018	May 18, 2022	Informal	State Formal Notice of Violation issued
355044	May 18, 2022	Informal	State Public Notification requested
355045	May 18, 2022	Informal	State Formal Notice of Violation issued
355075	May 18, 2022	Informal	State Public Notification requested
355076	May 18, 2022	Informal	State Formal Notice of Violation issued
355100	April 24, 2023	Informal	State Public Notification received
355111	May 21, 2023	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 118422 · Chromium · Inorganic Chemicals

Noncompliance period start April 1, 2013 · period end March 31, 2022 · first reported June 16, 2022 · EPA return-to-compliance field March 31, 2022

9 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
355069	April 18, 2022	Resolving	State Compliance achieved
355013	May 18, 2022	Informal	State Public Notification requested
355014	May 18, 2022	Informal	State Formal Notice of Violation issued
355040	May 18, 2022	Informal	State Public Notification requested
355041	May 18, 2022	Informal	State Formal Notice of Violation issued
355070	May 18, 2022	Informal	State Formal Notice of Violation issued
355071	May 18, 2022	Informal	State Public Notification requested
355098	April 24, 2023	Informal	State Public Notification received
355109	May 21, 2023	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 118322 · Cadmium · Inorganic Chemicals

Noncompliance period start April 1, 2013 · period end March 31, 2022 · first reported June 16, 2022 · EPA return-to-compliance field March 31, 2022

9 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
355068	April 18, 2022	Resolving	State Compliance achieved
355011	May 18, 2022	Informal	State Formal Notice of Violation issued
355012	May 18, 2022	Informal	State Public Notification requested
355038	May 18, 2022	Informal	State Formal Notice of Violation issued
355039	May 18, 2022	Informal	State Public Notification requested
355066	May 18, 2022	Informal	State Formal Notice of Violation issued
355067	May 18, 2022	Informal	State Public Notification requested
355097	April 24, 2023	Informal	State Public Notification received
355108	May 21, 2023	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 118222 · Barium · Inorganic Chemicals

Noncompliance period start April 1, 2013 · period end March 31, 2022 · first reported June 16, 2022 · EPA return-to-compliance field March 31, 2022

9 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
355063	April 18, 2022	Resolving	State Compliance achieved
355009	May 18, 2022	Informal	State Formal Notice of Violation issued
355010	May 18, 2022	Informal	State Public Notification requested
355036	May 18, 2022	Informal	State Formal Notice of Violation issued
355037	May 18, 2022	Informal	State Public Notification requested
355064	May 18, 2022	Informal	State Public Notification requested
355065	May 18, 2022	Informal	State Formal Notice of Violation issued
355096	April 24, 2023	Informal	State Public Notification received
355107	May 21, 2023	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 118122 · Arsenic · Arsenic Rule

Noncompliance period start April 1, 2013 · period end March 31, 2022 · first reported June 16, 2022 · EPA return-to-compliance field March 31, 2022

9 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
355062	April 18, 2022	Resolving	State Compliance achieved
355007	May 18, 2022	Informal	State Public Notification requested
355008	May 18, 2022	Informal	State Formal Notice of Violation issued
355034	May 18, 2022	Informal	State Public Notification requested
355035	May 18, 2022	Informal	State Formal Notice of Violation issued
355060	May 18, 2022	Informal	State Formal Notice of Violation issued
355061	May 18, 2022	Informal	State Public Notification requested
355095	April 24, 2023	Informal	State Public Notification received
355106	May 21, 2023	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 118022 · Antimony, Total · Inorganic Chemicals

Noncompliance period start April 1, 2013 · period end March 31, 2022 · first reported June 16, 2022 · EPA return-to-compliance field March 31, 2022

9 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
355081	April 18, 2022	Resolving	State Compliance achieved
355021	May 18, 2022	Informal	State Public Notification requested
355022	May 18, 2022	Informal	State Formal Notice of Violation issued
355048	May 18, 2022	Informal	State Public Notification requested
355049	May 18, 2022	Informal	State Formal Notice of Violation issued
355082	May 18, 2022	Informal	State Public Notification requested
355083	May 18, 2022	Informal	State Formal Notice of Violation issued
355102	April 24, 2023	Informal	State Public Notification received
355113	May 21, 2023	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 117922 · CYANIDE · Inorganic Chemicals

Noncompliance period start April 1, 2013 · period end March 31, 2022 · first reported June 16, 2022 · EPA return-to-compliance field March 31, 2022

9 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
355074	April 18, 2022	Resolving	State Compliance achieved
355015	May 18, 2022	Informal	State Formal Notice of Violation issued
355016	May 18, 2022	Informal	State Public Notification requested
355042	May 18, 2022	Informal	State Formal Notice of Violation issued
355043	May 18, 2022	Informal	State Public Notification requested
355072	May 18, 2022	Informal	State Public Notification requested
355073	May 18, 2022	Informal	State Formal Notice of Violation issued
355099	April 24, 2023	Informal	State Public Notification received
355110	May 21, 2023	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 117822 · Beryllium, Total · Inorganic Chemicals

Noncompliance period start April 1, 2013 · period end March 31, 2022 · first reported June 16, 2022 · EPA return-to-compliance field March 31, 2022

9 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
355084	April 18, 2022	Resolving	State Compliance achieved
355023	May 18, 2022	Informal	State Formal Notice of Violation issued
355024	May 18, 2022	Informal	State Public Notification requested
355050	May 18, 2022	Informal	State Formal Notice of Violation issued
355051	May 18, 2022	Informal	State Public Notification requested
355085	May 18, 2022	Informal	State Public Notification requested
355086	May 18, 2022	Informal	State Formal Notice of Violation issued
355103	April 24, 2023	Informal	State Public Notification received
355114	May 21, 2023	Informal	State Public Notification received

EPA data and scope

How to read the records

The enforcement snapshot is federal fiscal 2026Q3. The EPA archive labels its violation file October 13, 2026. EPA says federal reporting can lag by several months. For current advisories, check your utility or local drinking-water authority.

We matched active community water systems by public water system ID between EPA’s system search and SDWIS inventory. We show violations with a recorded noncompliance, initial reporting or return-to-compliance date from 2021 onward, plus earlier records listed as Addressed or Unaddressed.
EPA’s health-based flag identifies violations of contaminant or disinfectant limits or treatment requirements. Monitoring and reporting violations describe required tests or reports. Neither category measures household exposure.
Addressed means EPA records formal enforcement on a violation that remains unresolved in the snapshot. Unaddressed means no formal action is recorded for an unresolved violation. Resolved can mean compliance was restored, the rule ceased to apply, or further action was unnecessary. Archived is a separate status.
We count a violation once per water system and group its distinct linked actions. Conflicting records are set aside. Places are EPA-listed search locations and can include mailing locations. Use the provider name and system ID to identify your service.

EPA data dictionary and files · EPA reporting and enforcement FAQ · Find an annual water quality report · How to get the report from your utility