Is MCDERMITT WATER SYSTEM required to publish a Consumer Confidence Report?

Yes. MCDERMITT WATER SYSTEM is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.

When is MCDERMITT WATER SYSTEM’s next Consumer Confidence Report due?

MCDERMITT WATER SYSTEM’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

What is a Consumer Confidence Report?

A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

WINNEMUCCA, NV · Humboldt County

MCDERMITT WATER SYSTEM Water System

Consumer Confidence Report status

MCDERMITT WATER SYSTEM must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.

As of August 1, 2026, EPA's federal records show no open violations for MCDERMITT WATER SYSTEM.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 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)

MCDERMITT WATER SYSTEM is one of 293 community water systems in Nevada in the 500 or fewer people size category, serving 200 people from groundwater.

As of August 1, 2026, its federal record holds 27 entries between 2000 and 2021, all of which EPA lists as closed. Nothing has been added since 2021.

Of the 27, 6 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves inorganic chemicals, the Total Coliform Rules, and synthetic organic chemicals.

Violation history

Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2021 – September 30, 2021
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2021 – March 31, 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
Monitoring and Reporting (DBP)
—
Chlorine
April 1, 2020 – June 30, 2020
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
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
October 1, 2017 – December 31, 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, Regular
—
2,3,7,8-TCDD
October 1, 2015 – December 31, 2015
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 2015 – October 31, 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, Acute (TCR)
Health-based
Coliform (TCR)
December 1, 2007 – December 31, 2007
Archived
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
—
Di(2-ethylhexyl) phthalate
January 1, 2001 – December 31, 2001
Resolved
Monitoring, Regular
—
Styrene
January 1, 2000 – December 31, 2000
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2000 – December 31, 2000
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 – September 30, 2021	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
January 1, 2021 – March 31, 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	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
April 1, 2020 – June 30, 2020	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	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
October 1, 2017 – December 31, 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
October 1, 2015 – December 31, 2015	Monitoring, Regular	2,3,7,8-TCDD	—	Resolved
October 1, 2015 – October 31, 2015	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	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
December 1, 2007 – December 31, 2007	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Archived
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, 2001 – December 31, 2001	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
January 1, 2000 – December 31, 2000	Monitoring, Regular	Styrene	—	Resolved
January 1, 2000 – December 31, 2000	Monitoring, Regular	Carbon tetrachloride	—	Resolved

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

Enforcement actions

December 2, 2021State Compliance achieved25 linked violations
August 11, 2021State Compliance achieved23 linked violations
July 7, 2021State Public Notification requested26 linked violations
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
September 18, 2020State Public Notification received3 linked violations
May 11, 2020State Public Notification requested2 linked violations
May 11, 2020State Violation/Reminder Notice1 linked violation
January 13, 2020State Public Notification requested1 linked violation
January 13, 2020State Violation/Reminder Notice1 linked violation
December 30, 2019State Violation/Reminder Notice1 linked violation
October 5, 2019State Public Notification received6 linked violations
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 Violation/Reminder Notice1 linked violation
November 14, 2017State Public Notification requested1 linked violation
August 16, 2017State Violation/Reminder Notice1 linked violation
August 16, 2017State Public Notification requested1 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 Public Notification requested3 linked violations
December 27, 2016State Violation/Reminder Notice1 linked violation
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 Public Notification requested1 linked violation
November 19, 2015State Violation/Reminder Notice1 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 requested1 linked violation
October 13, 2015State Public Notification received1 linked violation
October 13, 2015State Public Notification received1 linked violation
October 13, 2015State Violation/Reminder Notice1 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 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 Public Notification requested1 linked violation
October 22, 2010State Violation/Reminder Notice2 linked violations
December 4, 2007State Variance/Exemption issued8 linked violations
October 28, 2005State Violation/Reminder Notice6 linked violations
December 19, 2002State Violation/Reminder Notice3 linked violations

Common questions

Is MCDERMITT WATER SYSTEM required to publish a Consumer Confidence Report?: Yes. MCDERMITT WATER SYSTEM is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is MCDERMITT WATER SYSTEM’s next Consumer Confidence Report due?: MCDERMITT WATER SYSTEM’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does MCDERMITT WATER SYSTEM have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show no open violations for MCDERMITT WATER SYSTEM.
What is a Consumer Confidence Report?: A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

Contact

FERRARO, DANIEL

775-623-6416

WINNEMUCCA, NV 89445