OHA Drinking Water Services
OR41
PWS ID: 93609 ---- MINIKAHDA WATER SYSTEM

Most Recent Water System Survey
Survey date: Jun 24, 2025
Notification date: Jul 01, 2025 (7 days)
Regulating agency: DWS (REGION 1)
Survey frequency: 5 YR  -  Visit the Water System Surveys page to see the list of surveys due each year.
Significant deficiencies and unmet rule requirements:
Category Significant deficiency or unmet rule requirement Due date Resolved date
Disinfection Unable to demonstrate minimum CTs are metAug 19, 2025 Jan 30, 2025
Surface Water Treatment Turbidity standards not metAug 19, 2025 Dec 09, 2023
Bold text indicates a significant deficiency. All others are unmet rule requirements.


 Hide Site Visit History
Water System Site Visit History
Reason Visit date Frequency Next due Notification date
(Days after survey)		 Responsible
agency		 Comments and
significant deficiencies or unmet rule requirements
Sanitary Survey, Finished (SNSV) 06/24/2025 5 YR  * 07/01/2025 (7) REGION 1 Show details
Sanitary Survey, Finished (SNSV) 09/28/2020 5 YR  * 10/23/2020 (25) REGION 1 No details
Water Treatment Plant Site Visit (TRTP) 09/28/2020 5 YR 09/28/2025 10/23/2020 (25) REGION 1 No details
Sanitary Survey, Finished (SNSV) 10/28/2015 5 YR  * 03/04/2016 (128) REGION 1 Hide details
 
Category Significant deficiency or unmet rule requirement Due date Resolved date
Management & Operations No operations and maintenance manualApr 22, 2016 Apr 22, 2016
Management & Operations Emergency response plan not completed (CWS, NTNC)Apr 22, 2016 Apr 22, 2016
Monitoring & Reporting No coliform sampling planApr 22, 2016 Apr 22, 2016
Operator Certification No protocol for under-certified operatorApr 22, 2016 Apr 22, 2016
Disinfection No means to adequately determine flow rate on contact chamber effluent lineJun 30, 2016 * Jun 22, 2016
* A corrective action plan has been submitted for this significant deficiency or unmet rule requirement.
Water Treatment Plant Site Visit (TRTP) 10/28/2015 1 YR 10/28/2016 03/04/2016 (128) REGION 1 No details
Sanitary Survey, Finished (SNSV) 11/30/2010 3 YR  * 02/07/2011 (69) CLACKAMAS COUNTY Show details
Sanitary Survey, Finished (SNSV) 10/31/2005 5 YR  * 11/28/2005 (28) CLACKAMAS COUNTY No details
Sanitary Survey, Finished (SNSV) 09/15/1986 5 YR  * DWP Show details