Wastewater Plans & Improvement Projects

Project: Wastewater Facility Plan & General Sewer Plan 
Project Budget: $192,810
Funder(s):  Department of Ecology
Grant: $192,810
City/Loan/Match: $0
Timeline:  2024

Project Description:

Updates are needed to the Pateros Wastewater Facility Plan which is out of date & does not reflect the City’s current Wastewater Treatment Facility (WWTF). The City has experienced changes in influent flows at the WWTF which has led to challenges to treatment processes and has the potential to reduce effluent quality which impacts the Columbia River. In addition, the City’s sanitary sewer collection system is old & leaking which causes contamination of the groundwater & the City’s sole source of drinking water.

Project: Wastewater Improvements
Estimates:
Sewer Collection System $4.49 Million
Treatment Plant Upgrades $8.52 Million

Funder(s):  Department of Ecology
Grant: $192,810
City/Loan/Match: $0
Timeline:  2024

Project Description: The majority of Pateros's sewer system is nearly 65 years old. Many o fthe sewer mains are constructed of asbestos cement or concrete and sit below the normal pool elevation of Wells Dam. Various colleciotn system

PROJECT UPDATES

Monthly Council Updates can be found in City Administrator Reports

May 2021 City signs agreement with ECY accepting the grant funds

August 16, 2021 Council approves consultant contract for project

August 2021 City Council Update

April 2022 City Council Update
Technical Memo #1 Planning Areas and Population
Technical Memo #2 Flow and Loading Projections

July 2022
Technical Memo #3 II Evaluation
Technical Memo #4 Treatment Facility Evaluation

August 2022
Technical Memo #5 Treatment Facility Improvements

December 2022 Wastewater Facility Plan & general Sewer Plan - Draft presented to Council. 


January 17, 2023 Council accepted plans, and approved submittal to State Engineer. 
Wastewater Facility Plan and General Sewer Plan           

January 16, 2024 Project presented at the Open House Community Engagement Session.
Community Engagement Session Presentation Board