OHA Drinking Water Services
OR41
PWS ID: 95174 ---- COLUMBIA RIVER DAIRY

Most Recent Water System Survey
Survey Date: Oct 30, 2025
Notification Date: Nov 04, 2025 (5 days)
Regulating Agency: DEPT OF AGRICULTURE
Survey Frequency: 5 YR  -  Visit the Water System Surveys page to see the list of surveys due each year.
Deficiencies:
Category Deficiency Due Date Resolved Date
Well Construction No screen on existing well ventMar 10, 2026
Disinfection Chlorine not measured & recorded as requiredMar 10, 2026
Bold text indicates that resolving this deficiency is a top priority.


 Hide Site Visit History
Water System Site Visit History
Reason Visit Date Frequency Next Due Notification Date
(Days after survey)		 Responsible
Agency		 Comments and
Deficiencies
Sanitary Survey, Finished (SNSV) 10/30/2025 5 YR  * 11/04/2025 (5) DEPT OF AGRICULTURE Show details
Sanitary Survey, Finished (SNSV) 07/30/2019 5 YR  * 09/05/2019 (37) DWP Show details
Sanitary Survey, Finished (SNSV) 08/27/2014 5 YR  * 12/23/2014 (118) DEPT OF AGRICULTURE Hide details
 
Category Deficiency Due Date Resolved Date
Management & Operations No operations and maintenance manualApr 28, 2015 Overdue
Management & Operations Major modifications not approved (plan review)Apr 28, 2015 Overdue
Well Construction Sanitary seal and casing not watertightApr 28, 2015 Apr 28, 2016 - Late
Sanitary Survey, Finished (SNSV) 12/19/2008 5 YR  * 01/09/2009 (21) DEPT OF AGRICULTURE No details
Sanitary Survey, Finished (SNSV) 05/28/2004 5 YR  * DEPT OF AGRICULTURE Show details
 



More information for this water system: SDWIS ID 4740
System Info  ::  Report for Lenders  ::  Alerts  ::  Violations  ::  Compliance & Enforcement  ::  Contacts & Advisories  ::  Site Visits  ::  Public Notice
Coliform Summary  ::  Coliform Results  ::  Coliform Schedules  ::  LT2  ::  GW/GWUDI Source Details  ::  Plan Review  ::  Annual Fee
Chemical Summary  ::  Chemical Results  ::  Chemical Schedules  ::  Chemical Schedule Summary  ::  Arsenic RAA  ::  Cyanotoxins
Lead & Copper  ::  DBP Sample Sites  ::  FANLs  ::  MRDL  ::  GWR 4-Log  ::  Turbidity  ::  SWTR  ::  LRAA  ::  DW Source Protection
PFAS data are now located on the Chemical Results page.
Information for all water systems:
Water System Inventory  ::  Water System Surveys  ::  Outstanding Performers  ::  Treatment Plant Inspections  ::  Treatment  ::  Plan Reviews
Alerts  ::  Violations  ::  Compliance & Enforcement  ::  Deficiencies  ::  System Scores  ::  Exceedances  ::  Public Notices  ::  Service Lines
Water Advisories  ::  Contact Reports  ::  Cyanotoxins  ::  PFAS  ::  Post-wildfire VOCs  ::  Fluoride  ::  Certification List  ::  DW Source Protection
Main menu:
Introduction  ::  Data Search Options  ::  Water System Search  ::  DWS Home  ::  DWS Rules
Need help? Email Drinking Water Services for assistance.Staff/Partner Login