MAUPIN, OR · Wasco County

MAUPIN, CITY OF Water System

Current status

1 open health-based violation on record as of July 4, 2026, alongside 1 other open item(s). See the violation history below for contaminant and status details.

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 Oregon’s official records. Always confirm current status with Oregon before making decisions based on this information.

System facts

System ID (PWSID): OR4100510
System type: Community Water System
Population served: 420
Service connections: 340
Ownership: local government
Water source: groundwater (wells)

Violation history

Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2025 – July 15, 2025
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Groundwater Rule
July 1, 2025 – July 31, 2025
Archived
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Groundwater Rule
June 1, 2025 – June 30, 2025
Archived
Public Notification Violation for NPDWR Violation
—
Public Notice
April 10, 2025
Unaddressed
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
December 1, 2024 – December 31, 2024
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
November 1, 2024 – November 30, 2024
Resolved
LSL Inventory
Health-based
LEAD AND COPPER RULE REVISIONS
October 17, 2024
Unaddressed
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
October 1, 2024 – July 15, 2025
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Groundwater Rule
August 1, 2024 – August 31, 2024
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2024 – July 15, 2025
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Groundwater Rule
August 1, 2023 – August 31, 2023
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Groundwater Rule
May 1, 2023 – May 31, 2023
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
May 1, 2023 – May 31, 2023
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2022 – October 10, 2024
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Groundwater Rule
April 1, 2022 – April 30, 2022
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2021 – December 31, 2021
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Groundwater Rule
December 1, 2020 – December 31, 2020
Resolved
Monitoring and Reporting (DBP)
—
TTHM
October 1, 2020 – September 30, 2023
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
October 1, 2020 – September 30, 2023
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Groundwater Rule
October 1, 2018 – October 31, 2018
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2018 – September 12, 2019
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Groundwater Rule
August 1, 2018 – August 31, 2018
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Groundwater Rule
September 1, 2017 – September 30, 2017
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Groundwater Rule
April 1, 2017 – April 30, 2017
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
August 27, 2016 – March 22, 2016
Resolved
Failure To Address Contamination
Health-based
Groundwater Rule
February 16, 2016 – March 22, 2016
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Groundwater Rule
January 1, 2016 – January 31, 2016
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
January 1, 2011 – January 31, 2011
Resolved
Monitoring, Regular
—
Nitrate
January 1, 1997 – December 31, 1997
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
September 1, 1994 – September 30, 1994
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
June 1, 1976 – May 31, 1980
Archived
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
June 1, 1976 – May 31, 1980
Archived

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)Unaddressed no corrective action on record yet

Period	Violation	Contaminant / rule	Health-based	Status
July 1, 2025 – July 15, 2025	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2025 – July 31, 2025	Monitoring of Treatment (SWTR-Unfilt/GWR)	Groundwater Rule	—	Archived
June 1, 2025 – June 30, 2025	Monitoring of Treatment (SWTR-Unfilt/GWR)	Groundwater Rule	—	Archived
April 10, 2025	Public Notification Violation for NPDWR Violation	Public Notice	—	Unaddressed
December 1, 2024 – December 31, 2024	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
November 1, 2024 – November 30, 2024	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
October 17, 2024	LSL Inventory	LEAD AND COPPER RULE REVISIONS	Health-based	Unaddressed
October 1, 2024 – July 15, 2025	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
August 1, 2024 – August 31, 2024	Monitoring of Treatment (SWTR-Unfilt/GWR)	Groundwater Rule	—	Resolved
July 1, 2024 – July 15, 2025	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
August 1, 2023 – August 31, 2023	Monitoring of Treatment (SWTR-Unfilt/GWR)	Groundwater Rule	—	Resolved
May 1, 2023 – May 31, 2023	Monitoring of Treatment (SWTR-Unfilt/GWR)	Groundwater Rule	—	Resolved
May 1, 2023 – May 31, 2023	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
October 1, 2022 – October 10, 2024	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
April 1, 2022 – April 30, 2022	Monitoring of Treatment (SWTR-Unfilt/GWR)	Groundwater Rule	—	Resolved
January 1, 2021 – December 31, 2021	Monitoring, Regular	Nitrate	—	Resolved
December 1, 2020 – December 31, 2020	Monitoring of Treatment (SWTR-Unfilt/GWR)	Groundwater Rule	—	Resolved
October 1, 2020 – September 30, 2023	Monitoring and Reporting (DBP)	TTHM	—	Resolved
October 1, 2020 – September 30, 2023	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
October 1, 2018 – October 31, 2018	Monitoring of Treatment (SWTR-Unfilt/GWR)	Groundwater Rule	—	Resolved
October 1, 2018 – September 12, 2019	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
August 1, 2018 – August 31, 2018	Monitoring of Treatment (SWTR-Unfilt/GWR)	Groundwater Rule	—	Resolved
September 1, 2017 – September 30, 2017	Monitoring of Treatment (SWTR-Unfilt/GWR)	Groundwater Rule	—	Resolved
April 1, 2017 – April 30, 2017	Monitoring of Treatment (SWTR-Unfilt/GWR)	Groundwater Rule	—	Resolved
August 27, 2016 – March 22, 2016	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
February 16, 2016 – March 22, 2016	Failure To Address Contamination	Groundwater Rule	Health-based	Resolved
January 1, 2016 – January 31, 2016	Treatment Technique (SWTR and GWR)	Groundwater Rule	Health-based	Resolved
January 1, 2011 – January 31, 2011	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 1997 – December 31, 1997	Monitoring, Regular	Nitrate	—	Resolved
September 1, 1994 – September 30, 1994	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
June 1, 1976 – May 31, 1980	Monitoring, Regular	Combined Radium (-226 and -228)	—	Archived
June 1, 1976 – May 31, 1980	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)Unaddressed no corrective action on record yet

Enforcement actions

No enforcement actions on record for this system.

Contact

MAUPIN, CITY OF

541-395-2698

MAUPIN, OR 97037