NV0004021 · Nevada

SILVER KNOLLS MUTUAL WATER COMPANY

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

Violation records shown: 25
EPA health-based flag: 24
Health-based records unresolved in this snapshot: 1
Monitoring and reporting records: 1

Counties listed by EPA · Washoe County, Nevada

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

Violations and what followed

Among 1 resolved record with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 70 days. The interval uses the reporting periods and dates on file.

EPA health-based flag · Unaddressed by formal action

Failure To Address DeficiencyViolation 1029435 · Groundwater Rule · Ground Water Rule

Noncompliance period start March 1, 2018 · first reported December 4, 2018

17 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
128895	November 19, 2018	Informal	State Violation/Reminder Notice
128896	November 19, 2018	Informal	State Public Notification requested
128914	December 29, 2019	Informal	State Public Notification received
128917	April 7, 2020	Informal	State Public Notification received
128920	July 6, 2020	Informal	State Public Notification received
128926	January 7, 2021	Informal	State Public Notification received
128929	April 8, 2021	Informal	State Public Notification received
128935	July 12, 2021	Informal	State Public Notification received
128938	October 7, 2021	Informal	State Public Notification received
128944	April 6, 2022	Informal	State Public Notification received
128947	July 10, 2022	Informal	State Public Notification received
128954	April 2, 2023	Informal	State Public Notification received
128957	July 3, 2023	Informal	State Public Notification received
128962	October 10, 2023	Informal	State Public Notification received
128977	January 7, 2025	Informal	State Public Notification received
128986	October 10, 2025	Informal	State Public Notification received
128992	January 7, 2026	Informal	State Public Notification received

EPA health-based flag · Archived
Maximum Contaminant Level Violation, AverageViolation 1029484 · Arsenic · Arsenic Rule
Noncompliance period start April 1, 2026 · period end June 30, 2026 · first reported August 14, 2026 · EPA return-to-compliance field June 30, 2026
No linked action row appears in the records shown.

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 1029483 · Arsenic · Arsenic Rule

Noncompliance period start January 1, 2026 · period end March 31, 2026 · first reported June 1, 2026 · EPA return-to-compliance field March 31, 2026

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
128993	April 9, 2026	Informal	State Violation/Reminder Notice
128994	April 9, 2026	Informal	State Public Notification requested
128995	April 9, 2026	Informal	State Public Notification received

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 1029482 · Arsenic · Arsenic Rule

Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported February 17, 2026 · EPA return-to-compliance field December 31, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
128992	January 7, 2026	Informal	State Public Notification received
128990	January 8, 2026	Informal	State Violation/Reminder Notice
128991	January 8, 2026	Informal	State Public Notification requested

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 1029481 · Arsenic · Arsenic Rule

Noncompliance period start July 1, 2025 · period end September 30, 2025 · first reported November 17, 2025 · EPA return-to-compliance field September 30, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
128986	October 10, 2025	Informal	State Public Notification received
128984	October 13, 2025	Informal	State Violation/Reminder Notice
128985	October 13, 2025	Informal	State Public Notification requested

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 1029480 · Arsenic · Arsenic Rule

Noncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 18, 2025 · EPA return-to-compliance field June 30, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
128982	July 29, 2025	Informal	State Public Notification received
128980	July 30, 2025	Informal	State Violation/Reminder Notice
128981	July 30, 2025	Informal	State Public Notification requested

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 1029479 · Arsenic · Arsenic Rule

Noncompliance period start January 1, 2025 · period end March 31, 2025 · first reported May 19, 2025 · EPA return-to-compliance field March 31, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
128978	April 8, 2025	Informal	State Violation/Reminder Notice
128979	April 8, 2025	Informal	State Public Notification requested
128983	May 18, 2025	Informal	State Public Notification received

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 1029478 · Arsenic · Arsenic Rule

Noncompliance period start October 1, 2024 · period end December 31, 2024 · first reported February 24, 2025 · EPA return-to-compliance field December 31, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
128977	January 7, 2025	Informal	State Public Notification received
128975	January 8, 2025	Informal	State Violation/Reminder Notice
128976	January 8, 2025	Informal	State Public Notification requested

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 1029476 · Arsenic · Arsenic Rule

Noncompliance period start July 1, 2024 · period end September 30, 2024 · first reported November 15, 2024 · EPA return-to-compliance field September 30, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
128974	October 9, 2024	Informal	State Public Notification received
128972	October 17, 2024	Informal	State Violation/Reminder Notice
128973	October 17, 2024	Informal	State Public Notification requested

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 1029475 · Arsenic · Arsenic Rule

Noncompliance period start April 1, 2024 · period end June 30, 2024 · first reported August 15, 2024 · EPA return-to-compliance field June 30, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
128971	July 8, 2024	Informal	State Public Notification received
128969	July 9, 2024	Informal	State Violation/Reminder Notice
128970	July 9, 2024	Informal	State Public Notification requested

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 1029474 · Arsenic · Arsenic Rule

Noncompliance period start January 1, 2024 · period end March 31, 2024 · first reported May 15, 2024 · EPA return-to-compliance field March 31, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
128968	April 9, 2024	Informal	State Public Notification received
128966	April 10, 2024	Informal	State Violation/Reminder Notice
128967	April 10, 2024	Informal	State Public Notification requested

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 1029473 · Arsenic · Arsenic Rule

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 15, 2024 · EPA return-to-compliance field December 31, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
128963	January 4, 2024	Informal	State Violation/Reminder Notice
128964	January 4, 2024	Informal	State Public Notification requested
128965	January 5, 2024	Informal	State Public Notification received

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 1029472 · Arsenic · Arsenic Rule

Noncompliance period start July 1, 2023 · period end September 30, 2023 · first reported November 15, 2023 · EPA return-to-compliance field September 30, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
128962	October 10, 2023	Informal	State Public Notification received
128960	October 12, 2023	Informal	State Violation/Reminder Notice
128961	October 12, 2023	Informal	State Public Notification requested

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 1029471 · Arsenic · Arsenic Rule

Noncompliance period start April 1, 2023 · period end June 30, 2023 · first reported August 15, 2023 · EPA return-to-compliance field June 30, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
128957	July 3, 2023	Informal	State Public Notification received
128958	July 19, 2023	Informal	State Violation/Reminder Notice
128959	July 19, 2023	Informal	State Public Notification requested

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 1029470 · Arsenic · Arsenic Rule

Noncompliance period start January 1, 2023 · period end March 31, 2023 · first reported May 16, 2023 · EPA return-to-compliance field March 31, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
128954	April 2, 2023	Informal	State Public Notification received
128955	April 4, 2023	Informal	State Violation/Reminder Notice
128956	April 4, 2023	Informal	State Public Notification requested

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 1029469 · Arsenic · Arsenic Rule

Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported February 16, 2023 · EPA return-to-compliance field December 31, 2022

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
128951	January 3, 2023	Informal	State Violation/Reminder Notice
128952	January 3, 2023	Informal	State Public Notification requested
128953	January 3, 2023	Informal	State Public Notification received

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 1029468 · Arsenic · Arsenic Rule

Noncompliance period start July 1, 2022 · period end September 30, 2022 · first reported November 16, 2022 · EPA return-to-compliance field September 30, 2022

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
128948	October 10, 2022	Informal	State Violation/Reminder Notice
128949	October 10, 2022	Informal	State Public Notification requested
128950	October 10, 2022	Informal	State Public Notification received

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 1029467 · Arsenic · Arsenic Rule

Noncompliance period start April 1, 2022 · period end June 30, 2022 · first reported August 15, 2022 · EPA return-to-compliance field June 30, 2022

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
128947	July 10, 2022	Informal	State Public Notification received
128945	July 11, 2022	Informal	State Violation/Reminder Notice
128946	July 11, 2022	Informal	State Public Notification requested

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 1029466 · Arsenic · Arsenic Rule

Noncompliance period start January 1, 2022 · period end March 31, 2022 · first reported May 16, 2022 · EPA return-to-compliance field March 31, 2022

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
128942	April 6, 2022	Informal	State Violation/Reminder Notice
128943	April 6, 2022	Informal	State Public Notification requested
128944	April 6, 2022	Informal	State Public Notification received

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 1029463 · Arsenic · Arsenic Rule

Noncompliance period start October 1, 2021 · period end December 31, 2021 · first reported March 2, 2022 · EPA return-to-compliance field December 31, 2021

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
128939	January 3, 2022	Informal	State Violation/Reminder Notice
128940	January 3, 2022	Informal	State Public Notification requested
128941	January 6, 2022	Informal	State Public Notification received

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 1029462 · Arsenic · Arsenic Rule

Noncompliance period start July 1, 2021 · period end September 30, 2021 · first reported November 17, 2021 · EPA return-to-compliance field September 30, 2021

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
128936	October 6, 2021	Informal	State Violation/Reminder Notice
128937	October 6, 2021	Informal	State Public Notification requested
128938	October 7, 2021	Informal	State Public Notification received

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 1029460 · Arsenic · Arsenic Rule

Noncompliance period start April 1, 2021 · period end June 30, 2021 · first reported August 18, 2021 · EPA return-to-compliance field June 30, 2021

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
128933	June 18, 2021	Informal	State Public Notification requested
128934	June 18, 2021	Informal	State Violation/Reminder Notice
128935	July 12, 2021	Informal	State Public Notification received

Monitoring or reporting · Resolved

Report Sample Result/Fail Monitor (RTCR)Violation 1029459 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start March 1, 2021 · period end May 10, 2021 · first reported May 21, 2021 · EPA return-to-compliance field May 10, 2021

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
128930	April 30, 2021	Informal	State Violation/Reminder Notice
128931	April 30, 2021	Informal	State Public Notification requested
128932	May 10, 2021	Resolving	State Compliance achieved

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 1029458 · Arsenic · Arsenic Rule

Noncompliance period start January 1, 2021 · period end March 31, 2021 · first reported May 21, 2021 · EPA return-to-compliance field March 31, 2021

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
128927	April 5, 2021	Informal	State Violation/Reminder Notice
128928	April 5, 2021	Informal	State Public Notification requested
128929	April 8, 2021	Informal	State Public Notification received

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 1029457 · Arsenic · Arsenic Rule

Noncompliance period start October 1, 2020 · period end December 31, 2020 · first reported February 17, 2021 · EPA return-to-compliance field December 31, 2020

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
128924	January 5, 2021	Informal	State Violation/Reminder Notice
128925	January 5, 2021	Informal	State Public Notification requested
128926	January 7, 2021	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