Sewer & Water Systems

City Water System

The City of North Bend owns and operates a municipal water system that serves a majority of the city as well as a portion of the surrounding rural community. Residents in the eastern part of town which encompasses the Tanner and Truck Town areas are served by Sallal Water Association.

City Sewer System

The city’s sewer system historically served a relatively small population close to the downtown area. The recent Utility Local Improvement District No. 6 expansion resulted in sewer service being extended into the Tanner and Truck Town areas. Approximately 2,370 residents are currently served by the city’s wastewater collection system.

Wastewater Treatment Plant High Priority Improvements Project

Beginning in late 2014 and into 2015, the City invested nearly $3 million in emergency repairs at the aging Wastewater Treatment Plant (WWTP) located adjacent to Bendigo Blvd/SR 202 near the South Fork Snoqualmie River on the west side of town.

In response, the City commissioned a comprehensive study to determine the full scope of long-term improvements that were needed at the antiquated 1950s era WWTP.   Unfortunately, years of delayed upgrades - dating back to the 1980s - had caught up with the WWTP.

In 2016 it was determined that to bring the near failing WWTP up to current safety and environmental standards, as well as add redundancy and capacity, a substantial investment – approximately $34 million - would be required, which was the least expensive of three potential options being explored by the City.

WWTP Improvement Project Funding

As defined by state law, the City’s sewer utility must be a self-supported enterprise fund, which means that sewer rates must fund utility operations and needed infrastructure improvements

In 2016 the City commissioned a sewer rate and sewer General Facilities Charge (GFC) rate study to determine what increases would be required to fund the WWTP High Priority Improvements (HPI).   

Following multiple public meetings, in late 2016 a new 5-year sewer rate schedule to fund Phase 1 plant upgrades and related operations and maintenance costs was implemented. The average annual rate increase was approximately 9%. The majority of phase 1 improvements – roughly 77%  - were funded by the GFC rate increase, remaining true to the City Council’s policy of ‘growth paying for growth.’

As of March 2021, Phase 1 of the WWTP project is nearly complete and Phase 2 is 50% designed. As such, the City commissioned a new sewer rate study to fund Phase 2 improvements. This new multi-year sewer rate and GFC rate schedule increases sewer rates approximately 2.5% per year for 2022 – 2025; increases the non-ULID GFC and slightly decreases the ULID GFC.

It is estimated that construction of Phase 2 of the WWTP High Priority Improvements Project will begin in summer 2021 and be complete in 2023 – 2024.

Additional Information

The Wastewater System Facilities Plan (PDF) was completed in November of 2017, and adopted by Ordinance 1654 at the February 6, 2018 City Council Meeting.

To find out more about how a City’s sewer system works please view the informative video Cities 101 - Sewers.