WINNEMUCCA, NV · Humboldt County

MCDERMITT WATER SYSTEM Water System

Current status

No open violations on record as of July 4, 2026.

This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace Nevada’s official records. Always confirm current status with Nevada before making decisions based on this information.

System facts

System ID (PWSID): NV0000162
System type: Community Water System
Population served: 200
Service connections: 110
Ownership: local government
Water source: groundwater (wells)

Violation history

Monitoring, Regular
—
Arsenic
July 1, 2021 – July 31, 2021
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2021 – September 30, 2021
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2020 – December 31, 2020
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2020 – September 30, 2020
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2020 – June 30, 2020
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
April 1, 2020 – June 30, 2020
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2020 – March 31, 2020
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2019 – December 31, 2019
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2019 – September 30, 2019
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
June 1, 2019 – June 30, 2019
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2019 – June 30, 2019
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2019 – March 31, 2019
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2018 – December 31, 2018
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2018 – September 30, 2018
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2018 – June 30, 2018
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2017 – December 31, 2017
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2017 – June 30, 2017
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2017 – March 31, 2017
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2016 – December 31, 2016
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
September 1, 2015 – September 30, 2015
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2015 – September 30, 2015
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2015 – June 30, 2015
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
October 1, 2010 – October 31, 2010
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 2005 – October 31, 2005
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
December 1, 2002 – December 31, 2002
Archived
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2000 – December 31, 2000
Resolved
Monitoring, Regular
—
Toluene
January 1, 2000 – December 31, 2000
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2000 – December 31, 2000
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
October 19, 1999 – August 15, 2007
Resolved

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Period	Violation	Contaminant / rule	Health-based	Status
July 1, 2021 – July 31, 2021	Monitoring, Regular	Arsenic	—	Resolved
July 1, 2021 – September 30, 2021	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
October 1, 2020 – December 31, 2020	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
July 1, 2020 – September 30, 2020	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
April 1, 2020 – June 30, 2020	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
April 1, 2020 – June 30, 2020	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
January 1, 2020 – March 31, 2020	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
October 1, 2019 – December 31, 2019	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
July 1, 2019 – September 30, 2019	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
June 1, 2019 – June 30, 2019	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
April 1, 2019 – June 30, 2019	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
January 1, 2019 – March 31, 2019	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
October 1, 2018 – December 31, 2018	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
July 1, 2018 – September 30, 2018	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
April 1, 2018 – June 30, 2018	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
October 1, 2017 – December 31, 2017	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
April 1, 2017 – June 30, 2017	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
January 1, 2017 – March 31, 2017	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
October 1, 2016 – December 31, 2016	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
September 1, 2015 – September 30, 2015	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 2015 – September 30, 2015	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
April 1, 2015 – June 30, 2015	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
October 1, 2010 – October 31, 2010	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Resolved
October 1, 2005 – October 31, 2005	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
December 1, 2002 – December 31, 2002	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
January 1, 2000 – December 31, 2000	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2000 – December 31, 2000	Monitoring, Regular	Toluene	—	Resolved
January 1, 2000 – December 31, 2000	Monitoring, Regular	Carbon tetrachloride	—	Resolved
October 19, 1999 – August 15, 2007	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

July 7, 2021State Violation/Reminder Notice4 linked violations
March 22, 2021State Violation/Reminder Notice7 linked violations
January 11, 2021State Violation/Reminder Notice2 linked violations
January 7, 2021State Public Notification received4 linked violations
November 22, 2020State Public Notification requested3 linked violations
November 22, 2020State Violation/Reminder Notice3 linked violations
November 16, 2020State Public Notification requested3 linked violations
September 18, 2020State Public Notification received3 linked violations
June 23, 2020State Public Notification received1 linked violation
May 11, 2020State Public Notification requested2 linked violations
May 11, 2020State Violation/Reminder Notice1 linked violation
January 13, 2020State Violation/Reminder Notice1 linked violation
December 30, 2019State Public Notification requested1 linked violation
July 24, 2019State Violation/Reminder Notice1 linked violation
July 24, 2019State Public Notification requested1 linked violation
July 11, 2019State Compliance achieved1 linked violation
July 3, 2019State Public Notification received1 linked violation
June 21, 2019State Public Notification requested1 linked violation
June 21, 2019State Violation/Reminder Notice1 linked violation
April 18, 2019State Public Notification requested5 linked violations
April 18, 2019State Violation/Reminder Notice1 linked violation
April 9, 2019State Public Notification received1 linked violation
February 15, 2019State Public Notification requested1 linked violation
February 15, 2019State Violation/Reminder Notice1 linked violation
January 15, 2019State Public Notification received1 linked violation
October 16, 2018State Public Notification requested1 linked violation
October 16, 2018State Violation/Reminder Notice1 linked violation
October 9, 2018State Public Notification received7 linked violations
August 16, 2018State Public Notification requested1 linked violation
August 16, 2018State Violation/Reminder Notice1 linked violation
July 2, 2018State Public Notification received1 linked violation
May 10, 2018State Public Notification requested1 linked violation
May 10, 2018State Violation/Reminder Notice1 linked violation
April 17, 2018State Public Notification received1 linked violation
February 15, 2018State Violation/Reminder Notice1 linked violation
February 15, 2018State Public Notification requested1 linked violation
November 20, 2017State Public Notification received1 linked violation
November 14, 2017State Public Notification requested1 linked violation
November 14, 2017State Violation/Reminder Notice1 linked violation
August 16, 2017State Public Notification requested1 linked violation
August 16, 2017State Violation/Reminder Notice1 linked violation
August 9, 2017State Public Notification received1 linked violation
May 15, 2017State Public Notification requested1 linked violation
January 31, 2017State Public Notification received2 linked violations
December 27, 2016State Violation/Reminder Notice1 linked violation
December 27, 2016State Public Notification requested3 linked violations
April 28, 2016State Violation/Reminder Notice1 linked violation
April 28, 2016State Public Notification requested1 linked violation
April 19, 2016State Compliance achieved1 linked violation
April 19, 2016State Compliance achievedgeneral compliance action — not tied to a specific violation on record
February 16, 2016State Public Notification requested1 linked violation
February 16, 2016State Violation/Reminder Notice1 linked violation
December 30, 2015State Compliance achieved4 linked violations
November 19, 2015State Violation/Reminder Notice1 linked violation
November 19, 2015State Public Notification requested1 linked violation
November 2, 2015State Compliance achieved1 linked violation
October 23, 2015State Public Notification requested1 linked violation
October 23, 2015State Violation/Reminder Notice1 linked violation
October 22, 2015State Public Notification received1 linked violation
October 14, 2015State Compliance achieved1 linked violation
October 13, 2015State Public Notification received1 linked violation
October 13, 2015State Public Notification requested1 linked violation
October 13, 2015State Violation/Reminder Notice1 linked violation
October 13, 2015State Public Notification received1 linked violation
August 10, 2015State Violation/Reminder Notice1 linked violation
August 10, 2015State Public Notification requested1 linked violation
February 20, 2015State Public Notification received1 linked violation
February 12, 2015State Public Notification requested1 linked violation
February 12, 2015State Violation/Reminder Notice2 linked violations
January 30, 2015State Administrative/Compliance Order with penalty issued6 linked violations
December 5, 2012State Variance/Exemption issued2 linked violations
January 11, 2012State Public Notification received1 linked violation
January 8, 2012State Compliance achieved1 linked violation
December 19, 2011State Public Notification requested4 linked violations
December 19, 2011State Violation/Reminder Notice4 linked violations
December 7, 2010State Variance/Exemption issuedgeneral compliance action — not tied to a specific violation on record
November 9, 2010State Compliance achieved1 linked violation
October 22, 2010State Boil Water Order2 linked violations
October 22, 2010State Public Notification requested1 linked violation
May 30, 2008State Public Notification requested3 linked violations
December 4, 2007State Variance/Exemption issued8 linked violations
December 19, 2002State Violation/Reminder Notice3 linked violations
June 21, 2002State Public Notification requested23 linked violations
April 2, 2001State Violation/Reminder Notice30 linked violations

Contact

FERRARO, DANIEL

775-623-6416

WINNEMUCCA, NV 89445