OHA Drinking Water Services
OR41
PWS ID: 90575 ---- HARPER HIGH/ELEMENTARY SD 66

Most Recent Water System Survey
Survey date: Mar 30, 2026
Notification date: Apr 23, 2026 (24 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: No significant deficiencies or unmet rule requirements were identified for this survey.


 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) 03/30/2026 5 YR  * 04/23/2026 (24) REGION 1 No details
Sanitary Survey, Finished (SNSV) 06/10/2021 5 YR  * 07/19/2021 (39) REGION 1 Show details
Sanitary Survey, Finished (SNSV) 12/14/2015 5 YR  * 01/08/2016 (25) REGION 1 Hide details
 
Category Significant deficiency or unmet rule requirement Due date Resolved date
Management & Operations Emergency response plan not completed (CWS, NTNC)May 13, 2016 Dec 15, 2015
Well Construction Sanitary seal and casing not watertightMay 13, 2016 Dec 21, 2015
Well Construction Unscreened well ventMay 13, 2016 Dec 21, 2015
Disinfection DPD/EPA-approved method not usedMay 13, 2016 Feb 01, 2016
Disinfection Chlorine not measured & recordedMay 13, 2016 Feb 01, 2016
Other Treatment Non-NSF approved chemicalsMay 13, 2016 Feb 01, 2016
Sanitary Survey, Finished (SNSV) 05/21/2010 5 YR  * DWP No details
Sanitary Survey, Finished (SNSV) 02/11/2005 5 YR  * DWP Show details