Sewer Comprehensive Plan

The Comprehensive Sewer Plan for Lake Whatcom Water and Sewer District  is updated every six years as required by state law.  The plan has been prepared in accordance with the Washington State Department of Ecology (DOE) guidelines as presented in WAC 173‐240-50.

The purpose of this report is to provide a comprehensive overview of the existing sewage installations and treatment facilities operated and maintained by Lake Whatcom Water and Sewer District.  In addition, this report addresses potential future facilities development and projected population growth, including the following topics:

  • system owner/operator information,
  • sewer system layout including a description of the existing system boundaries, description of existing collection facilities including recently completed improvements,
  • discussion of development trends within sewer district boundaries,
  • discussion of existing and future collection and treatment issues such as existing and future sewer flows, and infiltration/inflow,
  • discussion of sewer rate structure and revenue planning,
  • discussion of present and future development alternatives within the district boundaries,
  • outline of future improvement projects within the District.

Click below to view.

Comprehensive Sewer Plan 2014-05-27_FINAL

Exhibit A Boundary

Exhibit B Collection System

Exhibit C Inflow Infiltration Engineering Brief

Exhibit D Hydraulic Model

Exhibit E Sudden Valley and Geneva Schematics

Exhibit F North Shore Schematic

Exhibit G City of Bellingham Agreement

Exhibit H Public Water Systems

Exhibit I Master Fees and Charges Resolution 798

Exhibit J Potential Sewer Growth Map

Exhibit K Capital Improvement Plan

Exhibit L Requirements for Water Sewer Resolution 757

Exhibit M Stormwater and Water Quality

Exhibit N Study Area Characteristics

2020 Sewer Comprehensive Plan Update

The District is required to update its Sewer Comprehensive Plan every 6 years. Pending Board of Commissioner approval at the February 12, 2020 meeting, the below final draft will be sent to required reviewing agencies for comment and approval.

01- 2020 Sewer Comprehensive Plan Rpt.Final Draft

02i – C1904 SEPA DNS 2020.02.20

02 – 2019-077 SEPA Environmental Checklist

03 – Exhibit A – District Boundary

04 – Exhibit B – Sewer Collection Systems

05 – Exhibit C – Update of I&I Analysis

06 – Exhibit D – Supplemental Hydraulic Model Analysis

07 – Exhibit E – Sudden Valley – Geneva Flow Schematics

08 – Exhibit F – North Shore Flow Schematic

09 – Exhibit G – City of Bellingham Recorded Interlocal Agreement

10 – Exhibit H – Public Water Systems

11 – Exhibit I – Master Fees and Charges Schedule 27

12 – Exhibit J – Potential Sewer Growth Map

13 – Exhibit K – Capital Improvement Plan

14 – Exhibit L – Water Quality Monitoring Report – North Shore OSS

15 – Exhibit M – North Shore Sewer Extension Investigation

16 – Exhibit N – Study Area Characteristics

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COVID-19 Customer Relief Measures

The District has taken measures to provide relief to our customers during the COVID-19 Crisis. Please click here for information.

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District Office Closed

The District continues to operate largely under its normal procedures, but has made the decision to close the office lobby to the public until further notice. No issues are foreseen […]

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