PORTLAND, OR · Multnomah County

BIG OAK MARINA 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): OR4106054
System type: Community Water System
Population served: 30
Service connections: 25
Ownership: privately owned
Water source: groundwater (wells)

Violation history

Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
October 1, 2025 – November 13, 2025
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
September 1, 2025 – September 30, 2025
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
July 1, 2025
Unaddressed
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2025 – November 13, 2025
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
February 1, 2025 – February 28, 2025
Resolved
Maximum Contaminant Level Violation, E. coli (RTCR)
Health-based
Revised Total Coliform Rule
September 1, 2024 – September 30, 2024
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
August 30, 2024 – November 21, 2024
Resolved
Maximum Contaminant Level Violation, E. coli (RTCR)
Health-based
Revised Total Coliform Rule
August 1, 2024 – August 31, 2024
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2024 – August 1, 2024
Resolved
Monitoring, Regular
—
Pentachlorophenol
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Benzene
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Toluene
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Styrene
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Endrin
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
BHC-GAMMA
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Methoxychlor
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Toxaphene
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Dalapon
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Diquat
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Endothall
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Glyphosate
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
OXAMYL
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Simazine
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Picloram
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Dinoseb
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Carbofuran
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Atrazine
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
LASSO
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Heptachlor
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Heptachlor epoxide
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
2,4-D
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
2,4,5-TP
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
HEXACHLOROBENZENE
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
ETHYLENE DIBROMIDE
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Chlordane
January 1, 2024 – December 31, 2024
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
January 1, 2024 – February 23, 2024
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Barium
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Combined Uranium
January 1, 2023 – March 31, 2023
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
January 1, 2023 – March 31, 2023
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
January 1, 2023 – March 31, 2023
Resolved
Monitoring, Regular
—
Cadmium
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
CYANIDE
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Fluoride
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Mercury
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Nickel
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Antimony, Total
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Chromium
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Beryllium, Total
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Thallium, Total
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Selenium
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Nitrite
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Arsenic
January 1, 2023 – December 31, 2025
Archived
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
December 1, 2022 – December 31, 2022
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
November 1, 2022 – November 30, 2022
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
October 1, 2022 – October 31, 2022
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
August 1, 2022 – August 31, 2022
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
January 1, 2003 – January 31, 2003
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2003 – January 28, 2003
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
December 1, 2002 – December 31, 2002
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
November 1, 2002 – November 30, 2002
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
October 1, 2002 – October 31, 2002
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
July 1, 2002 – July 31, 2002
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
June 1, 2002 – June 30, 2002
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
May 1, 2002 – May 31, 2002
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
April 1, 2002 – April 30, 2002
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
January 1, 2002 – March 31, 2002
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
January 1, 2002 – March 31, 2002
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2001 – December 31, 2001
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
January 1, 2001 – March 31, 2001
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
January 1, 2000 – March 31, 2000
Resolved

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

Period	Violation	Contaminant / rule	Health-based	Status
October 1, 2025 – November 13, 2025	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
September 1, 2025 – September 30, 2025	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
July 1, 2025	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Unaddressed
July 1, 2025 – November 13, 2025	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
February 1, 2025 – February 28, 2025	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
September 1, 2024 – September 30, 2024	Maximum Contaminant Level Violation, E. coli (RTCR)	Revised Total Coliform Rule	Health-based	Resolved
August 30, 2024 – November 21, 2024	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
August 1, 2024 – August 31, 2024	Maximum Contaminant Level Violation, E. coli (RTCR)	Revised Total Coliform Rule	Health-based	Resolved
July 1, 2024 – August 1, 2024	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Pentachlorophenol	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Benzene	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Toluene	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Styrene	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Endrin	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	BHC-GAMMA	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Methoxychlor	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Toxaphene	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Dalapon	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Diquat	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Endothall	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Glyphosate	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	OXAMYL	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Simazine	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Picloram	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Dinoseb	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Carbofuran	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Atrazine	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	LASSO	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Heptachlor	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Heptachlor epoxide	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	2,4-D	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	2,4,5-TP	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	HEXACHLOROBENZENE	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Chlordane	—	Resolved
January 1, 2024 – February 23, 2024	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2023 – December 31, 2025	Monitoring, Regular	Barium	—	Archived
January 1, 2023 – March 31, 2023	Monitoring, Regular	Combined Uranium	—	Resolved
January 1, 2023 – March 31, 2023	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
January 1, 2023 – March 31, 2023	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
January 1, 2023 – December 31, 2025	Monitoring, Regular	Cadmium	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	CYANIDE	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Fluoride	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Mercury	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Nickel	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Antimony, Total	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Chromium	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Beryllium, Total	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Thallium, Total	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Selenium	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Nitrite	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Arsenic	—	Archived
December 1, 2022 – December 31, 2022	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
November 1, 2022 – November 30, 2022	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
October 1, 2022 – October 31, 2022	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
August 1, 2022 – August 31, 2022	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
January 1, 2003 – January 31, 2003	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
January 1, 2003 – January 28, 2003	Monitoring, Regular	Nitrate	—	Resolved
December 1, 2002 – December 31, 2002	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
November 1, 2002 – November 30, 2002	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
October 1, 2002 – October 31, 2002	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 2002 – July 31, 2002	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
June 1, 2002 – June 30, 2002	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
May 1, 2002 – May 31, 2002	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
April 1, 2002 – April 30, 2002	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2002 – March 31, 2002	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Resolved
January 1, 2002 – March 31, 2002	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
January 1, 2001 – December 31, 2001	Monitoring, Regular	Nitrate	—	Resolved
January 1, 2001 – March 31, 2001	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2000 – March 31, 2000	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved

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

Enforcement actions

November 13, 2025State Compliance achieved3 linked violations
October 24, 2025State Compliance achieved1 linked violation
March 13, 2025State Compliance achieved1 linked violation
March 13, 2025State Compliance achieved1 linked violation
March 13, 2025State Compliance achieved1 linked violation
March 13, 2025State Compliance achieved1 linked violation
March 13, 2025State Compliance achieved1 linked violation
March 13, 2025State Compliance achieved1 linked violation
March 13, 2025State Compliance achieved1 linked violation
March 13, 2025State Compliance achieved1 linked violation
March 13, 2025State Compliance achieved2 linked violations
March 13, 2025State Compliance achieved1 linked violation
March 13, 2025State Compliance achieved4 linked violations
March 13, 2025State Compliance achieved1 linked violation
March 13, 2025State Compliance achieved1 linked violation
March 13, 2025State Compliance achieved1 linked violation
March 13, 2025State Compliance achieved3 linked violations
March 13, 2025State Compliance achieved1 linked violation
March 13, 2025State Compliance achieved4 linked violations
March 13, 2025State Compliance achieved6 linked violations
March 13, 2025State Compliance achieved1 linked violation
March 13, 2025State Compliance achieved2 linked violations
March 13, 2025State Compliance achieved1 linked violation
March 13, 2025State Compliance achieved2 linked violations
March 13, 2025State Compliance achieved1 linked violation
March 13, 2025State Compliance achieved1 linked violation
March 13, 2025State Compliance achieved2 linked violations
March 13, 2025State Compliance achieved1 linked violation
March 13, 2025State Compliance achieved2 linked violations
November 21, 2024State Compliance achieved4 linked violations
September 20, 2024State Public Notification received1 linked violation
September 19, 2024State Public Notification requested2 linked violations
August 30, 2024State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
August 28, 2024State Public Notification requested2 linked violations
August 1, 2024State Compliance achieved1 linked violation
September 15, 2023State Compliance achieved29 linked violations
September 15, 2023State Compliance achieved2 linked violations
February 2, 2023State Compliance achieved28 linked violations
October 5, 2022State Compliance achieved4 linked violations
January 28, 2004State no longer subject to Rule4 linked violations
March 25, 2003State Compliance achieved3 linked violations
January 9, 2003State Compliance achieved2 linked violations
August 27, 2002State Compliance achieved4 linked violations

Contact

BIG OAK MARINA

503-289-7879

PORTLAND, OR 97217