OHA Drinking Water Services
OR41
PWS ID: 01265 ---- ARRAH WANNA WATER COMPANY

Most Recent Water System Survey
Survey date: Jul 15, 2021
Notification date: Aug 16, 2021 (32 days)
Regulating agency: JACKSON COUNTY
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) 07/15/2021 5 YR  * 08/16/2021 (32) JACKSON COUNTY No details
Sanitary Survey, Finished (SNSV) 12/13/2016 5 YR  * 02/01/2017 (50) REGION 2 Show details
Water Treatment Plant Site Visit (TRTP) 12/13/2016 1 YR 12/13/2017 02/01/2017 (50) REGION 1 No details
Sanitary Survey, Finished (SNSV) 12/16/2010 5 YR  * 02/07/2011 (53) CLACKAMAS COUNTY Hide details
  Comments:
The deficiencies noted are as follows:

Treatment Deficiencies
1. Non NSF approved chlorine used for disinfection.
2. Contact chamber does not have effluent flow meter.
3. Chlorine residuals are not recorded as required.
4. Tracer study or alternative not conducted.
5. CT values not met at all times.
6. CT values not being calculated correctly.


Category Significant deficiency or unmet rule requirement Due date Resolved date
Disinfection Chlorine not measured & recordedNot tracked
Disinfection Unable to demonstrate minimum CTs are metNot tracked
Disinfection No means to adequately determine flow rate on contact chamber effluent lineNot tracked
Disinfection Failure to calculate CT values correctlyNot tracked
Disinfection No means to adequately determine disinfection contact time under peak flow and minimum storage conditionsNot tracked
Other Treatment Non-NSF approved chemicalsNot tracked
Significant deficiency and unmet rule requirement dates were not tracked prior to 1/1/2014.
Sanitary Survey, Finished (SNSV) 09/08/2005 5 YR  * CLACKAMAS COUNTY Show details