DEXTER, OR · Lane County

DEXTER OAKS CO-OP Water System

Current status

1 item on record is open and awaiting resolution as of July 4, 2026. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings. Full details are in the violation history below.

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): OR4100998
System type: Community Water System
Population served: 75
Service connections: 38
Ownership: privately owned
Water source: groundwater (wells)

Violation history

Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2025
Unaddressed
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
October 1, 2023 – June 25, 2024
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
May 21, 2023 – July 30, 2023
Resolved
Monitoring, Regular
—
Arsenic
April 1, 2023 – June 30, 2023
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2023 – March 31, 2023
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2022 – December 31, 2022
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
August 29, 2022 – April 1, 2024
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2022 – September 30, 2022
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2022 – June 30, 2022
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2022 – March 31, 2022
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2021 – December 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
April 1, 2021 – April 23, 2021
Resolved
Monitoring, Regular
—
Arsenic
January 1, 2021 – March 31, 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
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
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2019 – June 30, 2019
Resolved
Monitoring, Regular
—
Arsenic
July 1, 2018 – September 30, 2018
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
June 20, 2017 – July 10, 2017
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
March 12, 2017 – July 10, 2017
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
January 1, 2016 – December 31, 2016
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
October 1, 2003 – October 31, 2003
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
May 1, 1997 – May 31, 1997
Resolved
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
August 1, 1994 – August 31, 1994
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
July 1, 1994 – June 12, 1995
Resolved
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
July 1, 1994 – July 31, 1994
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
January 1, 1994 – June 12, 1995
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
January 1, 1993 – January 31, 1993
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
December 1, 1992 – December 31, 1992
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
December 1, 1992 – December 31, 1992
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 1983 – June 30, 1983
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 1983 – March 31, 1983
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 1982 – December 31, 1982
Archived
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
June 1, 1976 – May 31, 1980
Archived
Monitoring, Regular
—
Combined Radium (-226 and -228)
June 1, 1976 – May 31, 1980
Archived

Unaddressed no corrective action on record yetResolved 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
October 1, 2025	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Unaddressed
October 1, 2023 – June 25, 2024	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
May 21, 2023 – July 30, 2023	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
April 1, 2023 – June 30, 2023	Monitoring, Regular	Arsenic	—	Resolved
January 1, 2023 – March 31, 2023	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
October 1, 2022 – December 31, 2022	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
August 29, 2022 – April 1, 2024	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
July 1, 2022 – September 30, 2022	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
April 1, 2022 – June 30, 2022	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
January 1, 2022 – March 31, 2022	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
October 1, 2021 – December 31, 2021	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
July 1, 2021 – September 30, 2021	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
April 1, 2021 – April 23, 2021	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
January 1, 2021 – March 31, 2021	Monitoring, Regular	Arsenic	—	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	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
April 1, 2019 – June 30, 2019	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
July 1, 2018 – September 30, 2018	Monitoring, Regular	Arsenic	—	Resolved
June 20, 2017 – July 10, 2017	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
March 12, 2017 – July 10, 2017	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
January 1, 2016 – December 31, 2016	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
October 1, 2003 – October 31, 2003	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
May 1, 1997 – May 31, 1997	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
August 1, 1994 – August 31, 1994	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Resolved
July 1, 1994 – June 12, 1995	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
July 1, 1994 – July 31, 1994	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 1994 – June 12, 1995	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
January 1, 1993 – January 31, 1993	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Archived
December 1, 1992 – December 31, 1992	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
December 1, 1992 – December 31, 1992	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
April 1, 1983 – June 30, 1983	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
January 1, 1983 – March 31, 1983	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
October 1, 1982 – December 31, 1982	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
June 1, 1976 – May 31, 1980	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived
June 1, 1976 – May 31, 1980	Monitoring, Regular	Combined Radium (-226 and -228)	—	Archived

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

Enforcement actions

May 7, 2025State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
July 8, 2024State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
June 25, 2024State Compliance achieved1 linked violation
April 1, 2024State Compliance achieved14 linked violations
March 18, 2024State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
February 16, 2024State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
January 22, 2024State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
August 7, 2023State Public Notification received1 linked violation
July 30, 2023State Compliance achieved1 linked violation
July 7, 2023State Compliance achieved1 linked violation
April 20, 2023State Public Notification requested1 linked violation
February 2, 2023State Public Notification requested1 linked violation
October 14, 2022State Public Notification received1 linked violation
October 14, 2022State Public Notification received1 linked violation
July 29, 2022State Public Notification requested1 linked violation
July 12, 2022State Public Notification received1 linked violation
April 25, 2022State Public Notification received1 linked violation
April 25, 2022State Public Notification requested1 linked violation
January 24, 2022State Public Notification requested1 linked violation
January 15, 2022State Public Notification received1 linked violation
November 5, 2021State Public Notification requested1 linked violation
September 7, 2021State Public Notification received1 linked violation
July 22, 2021State Public Notification requested2 linked violations
May 11, 2021State Public Notification received2 linked violations
April 30, 2021State Compliance achieved2 linked violations
April 30, 2021State Compliance achieved1 linked violation
April 23, 2021State Compliance achieved2 linked violations
April 21, 2021State Public Notification requested1 linked violation
February 16, 2021State Compliance achieved1 linked violation
February 1, 2021State Public Notification received1 linked violation
January 26, 2021State Public Notification requested2 linked violations
November 30, 2020State Public Notification received1 linked violation
November 2, 2020State Public Notification requested2 linked violations
August 22, 2020State Public Notification received2 linked violations
July 29, 2020State Public Notification requested1 linked violation
May 27, 2020State Public Notification received1 linked violation
May 27, 2020State Public Notification received1 linked violation
April 22, 2020State Public Notification requested2 linked violations
March 3, 2020State Bilateral Compliance Agreement signed17 linked violations
January 30, 2020State Public Notification requested1 linked violation
November 20, 2019State Public Notification received1 linked violation
October 22, 2019State Public Notification requested1 linked violation
September 12, 2019State Public Notification received1 linked violation
July 10, 2017State Compliance achieved3 linked violations
May 24, 1997State Public Notification received1 linked violation
June 12, 1995State Compliance achieved1 linked violation
November 4, 1994State Formal Notice of Violation issued1 linked violation

Contact

DEXTER OAKS CO-OP

209-578-3903

DEXTER, OR 97431