OHA Drinking Water Services
OR41
PWS ID: 95118 ---- USACE COTTAGE GROVE

Most Recent Water System Survey
Survey Date: Jun 09, 2025
Notification Date: Jun 23, 2025 (14 days)
Regulating Agency: LANE COUNTY
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
Management & Operations No operations and maintenance manualOct 27, 2025 Sep 22, 2025
Monitoring & Reporting No coliform sampling planOct 27, 2025 Sep 22, 2025


 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) 06/09/2025 5 YR  * 06/23/2025 (14) LANE COUNTY Show details
Sanitary Survey, Finished (SNSV) 11/07/2017 5 YR  * 12/07/2017 (30) LANE COUNTY Show details
Sanitary Survey, Finished (SNSV) 12/12/2011 5 YR  * 12/30/2011 (18) LANE COUNTY Hide details
  Comments:
The deficiencies noted are as follows:

Treatment and Disinfection Deficiencies
1. No means to adequately determine flow rate on contact chamber effluent line
2. No means to adequately determine disinfection contact time under peak flow and minimum storage conditions/Tracer study or alternative not conducted


Category Deficiency Due Date Resolved Date
Disinfection No means to adequately determine flow rate on contact chamber effluent lineNot tracked
Disinfection No means to adequately determine disinfection contact time under peak flow and minimum storage conditionsNot tracked
Deficiency dates were not tracked prior to 1/1/2014.
Sanitary Survey, Finished (SNSV) 08/30/2006 5 YR  * 11/02/2006 (64) REGION 2 No details
Sanitary Survey, Finished (SNSV) 01/24/2001 5 YR  * DWP Show details