RIDDLE, OR · Douglas County

DIAMOND LAKE LODGE/RESORT 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 Oregon’s official records. Always confirm current status with Oregon before making decisions based on this information.

System facts

System ID (PWSID): OR4192104
System type: Community Water System
Population served: 90
Service connections: 70
Ownership: privately owned
Water source: groundwater (wells)

Violation history

Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2025 – September 8, 2025
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
October 1, 2024 – September 8, 2025
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2024 – July 27, 2024
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
October 1, 2023 – September 8, 2025
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2023 – July 27, 2024
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2021 – September 23, 2024
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
March 1, 2021 – March 31, 2021
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
January 1, 2021 – January 31, 2021
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2021 – December 31, 2021
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
November 1, 2020 – November 30, 2020
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2020 – December 31, 2020
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
January 1, 2017 – December 31, 2025
Archived
OCCT/SOWT Study/Recommendation
Health-based
Lead and Copper Rule
June 1, 2016 – August 15, 2016
Resolved
Public Education
Health-based
Lead and Copper Rule
May 6, 2016 – June 23, 2016
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
April 24, 2016 – April 15, 2016
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
January 1, 2016 – January 31, 2016
Resolved
Monitoring, Regular
—
Nitrite
January 1, 2014 – December 31, 2022
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
December 29, 2013 – December 20, 2013
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
September 1, 2011 – September 30, 2011
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
January 1, 2011 – December 31, 2016
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
December 1, 2010 – December 31, 2010
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2009 – December 31, 2009
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
November 1, 2008 – November 30, 2008
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
January 1, 2008 – December 31, 2016
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
October 1, 2007 – October 31, 2007
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
June 1, 2007 – June 30, 2007
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
April 1, 2007 – April 30, 2007
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
September 1, 2006 – September 30, 2006
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
October 19, 2003 – January 26, 2004
Resolved
Monitoring, Regular
—
Thallium, Total
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Beryllium, Total
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Antimony, Total
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Nickel
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Mercury
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Fluoride
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
CYANIDE
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Chromium
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Cadmium
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Barium
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Arsenic
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Selenium
January 1, 2002 – December 31, 2004
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
October 19, 2001 – September 18, 2002
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2001 – September 18, 2002
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2001 – December 31, 2001
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2000 – September 18, 2002
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
February 1, 2000 – February 29, 2000
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Styrene
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
2,4-D
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
2,4,5-TP
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Atrazine
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
BHC-GAMMA
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Carbofuran
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Dalapon
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Dinoseb
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Endrin
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
ETHYLENE DIBROMIDE
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Glyphosate
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Heptachlor
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Methoxychlor
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Pentachlorophenol
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Picloram
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Simazine
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Toxaphene
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
OXAMYL
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Arsenic
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Antimony, Total
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Beryllium, Total
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
CYANIDE
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Nickel
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Thallium, Total
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
August 1, 1998 – August 31, 1998
Resolved
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
July 1, 1998 – July 31, 1998
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
July 1, 1998 – July 31, 1998
Resolved
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
May 1, 1998 – May 31, 1998
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
April 1, 1998 – April 30, 1998
Resolved
Monitoring, Regular
—
Nitrate
January 1, 1998 – December 31, 1998
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
August 1, 1997 – August 31, 1997
Resolved
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
August 1, 1997 – August 31, 1997
Resolved
Monitoring, Regular
—
Nitrate
January 1, 1996 – December 31, 1996
Resolved
OCCT/SOWT Study/Recommendation
Health-based
Lead and Copper Rule
January 1, 1996 – December 25, 2010
Resolved
Initial, Follow-up, or Routine Source Water M/R
—
Lead and Copper Rule
October 1, 1995 – December 25, 2010
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
August 1, 1995 – August 31, 1995
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
November 1, 1994 – November 30, 1994
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
July 1, 1994 – November 8, 1994
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
January 1, 1994 – November 8, 1994
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
March 1, 1993 – March 31, 1993
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
September 1, 1992 – September 30, 1992
Archived
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
September 1, 1992 – September 30, 1992
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
May 1, 1992 – May 31, 1992
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
November 1, 1991 – November 30, 1991
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
October 1, 1991 – October 31, 1991
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
October 1, 1991 – October 31, 1991
Archived

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, 2025 – September 8, 2025	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
October 1, 2024 – September 8, 2025	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
July 1, 2024 – July 27, 2024	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
October 1, 2023 – September 8, 2025	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
July 1, 2023 – July 27, 2024	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
October 1, 2021 – September 23, 2024	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
March 1, 2021 – March 31, 2021	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
January 1, 2021 – January 31, 2021	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
January 1, 2021 – December 31, 2021	Monitoring, Regular	Nitrate	—	Resolved
November 1, 2020 – November 30, 2020	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
January 1, 2020 – December 31, 2020	Monitoring, Regular	Nitrate	—	Resolved
January 1, 2017 – December 31, 2025	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived
June 1, 2016 – August 15, 2016	OCCT/SOWT Study/Recommendation	Lead and Copper Rule	Health-based	Resolved
May 6, 2016 – June 23, 2016	Public Education	Lead and Copper Rule	Health-based	Resolved
April 24, 2016 – April 15, 2016	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
January 1, 2016 – January 31, 2016	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2014 – December 31, 2022	Monitoring, Regular	Nitrite	—	Resolved
December 29, 2013 – December 20, 2013	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
September 1, 2011 – September 30, 2011	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2011 – December 31, 2016	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
December 1, 2010 – December 31, 2010	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2009 – December 31, 2009	Monitoring, Regular	Nitrate	—	Resolved
November 1, 2008 – November 30, 2008	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2008 – December 31, 2016	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
October 1, 2007 – October 31, 2007	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
June 1, 2007 – June 30, 2007	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
April 1, 2007 – April 30, 2007	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
September 1, 2006 – September 30, 2006	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
October 19, 2003 – January 26, 2004	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Thallium, Total	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Beryllium, Total	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Antimony, Total	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Nickel	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Mercury	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Fluoride	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	CYANIDE	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Chromium	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Cadmium	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Barium	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Arsenic	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Selenium	—	Resolved
October 19, 2001 – September 18, 2002	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
July 1, 2001 – September 18, 2002	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
January 1, 2001 – December 31, 2001	Monitoring, Regular	Nitrate	—	Resolved
July 1, 2000 – September 18, 2002	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
February 1, 2000 – February 29, 2000	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Styrene	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	2,4-D	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	2,4,5-TP	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Atrazine	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	BHC-GAMMA	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Carbofuran	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Dalapon	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Dinoseb	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Endrin	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Glyphosate	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Heptachlor	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Methoxychlor	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Pentachlorophenol	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Picloram	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Simazine	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Toxaphene	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	OXAMYL	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Arsenic	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Antimony, Total	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Beryllium, Total	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	CYANIDE	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Nickel	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Thallium, Total	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Carbon tetrachloride	—	Resolved
August 1, 1998 – August 31, 1998	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
July 1, 1998 – July 31, 1998	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Resolved
July 1, 1998 – July 31, 1998	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
May 1, 1998 – May 31, 1998	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Resolved
April 1, 1998 – April 30, 1998	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
January 1, 1998 – December 31, 1998	Monitoring, Regular	Nitrate	—	Resolved
August 1, 1997 – August 31, 1997	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
August 1, 1997 – August 31, 1997	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 1996 – December 31, 1996	Monitoring, Regular	Nitrate	—	Resolved
January 1, 1996 – December 25, 2010	OCCT/SOWT Study/Recommendation	Lead and Copper Rule	Health-based	Resolved
October 1, 1995 – December 25, 2010	Initial, Follow-up, or Routine Source Water M/R	Lead and Copper Rule	—	Resolved
August 1, 1995 – August 31, 1995	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
November 1, 1994 – November 30, 1994	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
July 1, 1994 – November 8, 1994	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
January 1, 1994 – November 8, 1994	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
March 1, 1993 – March 31, 1993	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
September 1, 1992 – September 30, 1992	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
September 1, 1992 – September 30, 1992	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Resolved
May 1, 1992 – May 31, 1992	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
November 1, 1991 – November 30, 1991	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
October 1, 1991 – October 31, 1991	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
October 1, 1991 – October 31, 1991	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived

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

Enforcement actions

September 25, 2025State Compliance achieved1 linked violation
September 8, 2025State Compliance achieved3 linked violations
September 23, 2024State Compliance achieved1 linked violation
July 27, 2024State Compliance achieved2 linked violations
February 16, 2022State Compliance achieved1 linked violation
February 16, 2022State Compliance achieved1 linked violation
April 20, 2021State Compliance achieved1 linked violation
February 26, 2021State Compliance achieved1 linked violation
December 29, 2020State Compliance achieved1 linked violation
June 17, 2019State Compliance achieved2 linked violations
August 15, 2016State Compliance achieved1 linked violation
June 23, 2016State Compliance achieved1 linked violation
April 15, 2016State Compliance achieved1 linked violation
February 18, 2016State Compliance achieved1 linked violation
December 20, 2013State Compliance achieved1 linked violation
October 31, 2011State Violation/Reminder Notice1 linked violation
October 24, 2011State Compliance achieved1 linked violation
January 24, 2011State Violation/Reminder Notice1 linked violation
January 19, 2011State Compliance achieved1 linked violation
December 25, 2010State no longer subject to Rule1 linked violation
December 25, 2010State no longer subject to Rule1 linked violation
December 25, 2010State no longer subject to Rule1 linked violation
February 22, 2010State Violation/Reminder Notice1 linked violation
September 21, 2005State Compliance achieved13 linked violations
August 15, 2005State Compliance achieved6 linked violations
July 19, 2004State Compliance achieved29 linked violations
July 19, 2004State Compliance achieved21 linked violations
January 26, 2004State Compliance achieved1 linked violation
September 18, 2002State Compliance achieved1 linked violation
September 18, 2002State Compliance achieved1 linked violation
September 18, 2002State Compliance achieved1 linked violation
September 18, 2002State Compliance achieved1 linked violation
September 18, 2002State Compliance achieved1 linked violation
March 8, 2000State Compliance achieved2 linked violations
July 1, 1998State Compliance achievedgeneral compliance action — not tied to a specific violation on record
May 29, 1998State Administrative/Compliance Order with penalty issued1 linked violation
November 8, 1994State Compliance achieved1 linked violation
November 8, 1994State Compliance achieved1 linked violation
November 4, 1994State Formal Notice of Violation issued1 linked violation

Contact

DIAMOND LAKE LODGE/RESORT

541-643-6137

RIDDLE, OR 97469