MEDFORD, OR · Jackson County

DARK HOLLOW WATER ASSOCIATION Water System

Current status

4 items on record are 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): OR4105117
System type: Community Water System
Population served: 45
Service connections: 13
Ownership: privately owned
Water source: groundwater (wells)

Violation history

Maximum Contaminant Level Violation, E. coli (RTCR)
Health-based
Revised Total Coliform Rule
September 1, 2022 – September 30, 2022
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2019 – December 31, 2021
Resolved
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2019 – December 31, 2021
Resolved
Monitoring, Regular
—
Combined Uranium
October 1, 2017 – December 31, 2017
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
October 1, 2017 – December 31, 2017
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
October 1, 2017 – December 31, 2017
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
July 1, 2017 – September 30, 2017
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
July 1, 2017 – September 30, 2017
Resolved
Monitoring, Regular
—
Combined Uranium
July 1, 2017 – September 30, 2017
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
July 1, 2017 – December 21, 2017
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
May 1, 2017 – May 31, 2017
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
April 1, 2017 – June 30, 2017
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
April 1, 2017 – June 30, 2017
Resolved
Monitoring, Regular
—
Combined Uranium
April 1, 2017 – June 30, 2017
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
April 1, 2017 – April 30, 2017
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
February 1, 2017 – February 28, 2017
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
January 1, 2017 – March 31, 2017
Resolved
Monitoring, Regular
—
Combined Uranium
January 1, 2017 – March 31, 2017
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
January 1, 2017 – March 31, 2017
Resolved
Maximum Contaminant Level Violation, E. coli (RTCR)
Health-based
Revised Total Coliform Rule
December 1, 2016 – December 31, 2016
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
August 27, 2011
Unaddressed
Monitoring, Source Water (GWR)
—
E. COLI
June 1, 2011
Unaddressed
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
April 1, 2011 – June 30, 2011
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
December 19, 2010
Unaddressed
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
November 1, 2010 – November 30, 2010
Resolved
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
October 1, 2010 – December 31, 2010
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
October 1, 2010
Unaddressed
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
July 1, 2010 – September 30, 2010
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
April 1, 2010 – June 30, 2010
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2009 – December 31, 2009
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
January 1, 2009 – March 31, 2009
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
July 1, 2008 – September 30, 2008
Resolved

Resolved addressed and confirmed by the stateUnaddressed no corrective action on record yet

Period	Violation	Contaminant / rule	Health-based	Status
September 1, 2022 – September 30, 2022	Maximum Contaminant Level Violation, E. coli (RTCR)	Revised Total Coliform Rule	Health-based	Resolved
January 1, 2019 – December 31, 2021	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
January 1, 2019 – December 31, 2021	Monitoring and Reporting (DBP)	TTHM	—	Resolved
October 1, 2017 – December 31, 2017	Monitoring, Regular	Combined Uranium	—	Resolved
October 1, 2017 – December 31, 2017	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
October 1, 2017 – December 31, 2017	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
July 1, 2017 – September 30, 2017	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
July 1, 2017 – September 30, 2017	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
July 1, 2017 – September 30, 2017	Monitoring, Regular	Combined Uranium	—	Resolved
July 1, 2017 – December 21, 2017	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
May 1, 2017 – May 31, 2017	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
April 1, 2017 – June 30, 2017	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
April 1, 2017 – June 30, 2017	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
April 1, 2017 – June 30, 2017	Monitoring, Regular	Combined Uranium	—	Resolved
April 1, 2017 – April 30, 2017	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
February 1, 2017 – February 28, 2017	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
January 1, 2017 – March 31, 2017	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
January 1, 2017 – March 31, 2017	Monitoring, Regular	Combined Uranium	—	Resolved
January 1, 2017 – March 31, 2017	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
December 1, 2016 – December 31, 2016	Maximum Contaminant Level Violation, E. coli (RTCR)	Revised Total Coliform Rule	Health-based	Resolved
August 27, 2011	Public Notification Violation for NPDWR Violation	Public Notice	—	Unaddressed
June 1, 2011	Monitoring, Source Water (GWR)	E. COLI	—	Unaddressed
April 1, 2011 – June 30, 2011	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Resolved
December 19, 2010	Public Notification Violation for NPDWR Violation	Public Notice	—	Unaddressed
November 1, 2010 – November 30, 2010	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
October 1, 2010 – December 31, 2010	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Resolved
October 1, 2010	Monitoring, Source Water (GWR)	E. COLI	—	Unaddressed
July 1, 2010 – September 30, 2010	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
April 1, 2010 – June 30, 2010	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2009 – December 31, 2009	Monitoring, Regular	Nitrate	—	Resolved
January 1, 2009 – March 31, 2009	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
October 1, 2008 – December 31, 2008	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved

Resolved addressed and confirmed by the stateUnaddressed no corrective action on record yet

Enforcement actions

No enforcement actions on record for this system.

Contact

DARK HOLLOW WATER ASSOCIATION

541-772-3546

MEDFORD, OR 97501