County LogoClallam County, Washington

Carlsborg Sewer System

June 2017

Carlsborg Sewer Ordinance

A new Carlsborg Sewer Ordinance went into effect on March 24, 2017 and is now Chapter 13.12 of the Clallam County Code. This ordinance contains information on connection requirements, side sewer use, repair and construction regulations, sewer rates and more.

Connection Policies and Fees

  • No new septic systems will be permitted for new development in the CUGA. In instances where it can be shown that this restriction will impose an unreasonable financial hardship a waiver is possible.
  • No current owner of developed property with a properly functioning septic system is required to connect to the new sewer system.
  • New subdivisions must provide sewer laterals (from sewer main to the property line) for each new parcel in the subdivision.
  • Existing developed property within 200 feet of a sewer main must connect to the public sewer system within one year of a change in ownership.
  • Cost for connection for applications recieved prior to March 31, 2019 is $1,500 per Equivalent Residential Unit (ERU), and for those connecting thereafter the fee will be $8,000 per ERU. The application form is provided in the link below.

Carlsborg Sewer Service begins July 2017

Construction on the Carlsborg Sewer System was completed in June 2017 and went into the Commissioning Phase on July 5, 2017.  Properties which have paid the connection fee and received all applicable permits can connect to the sewer system (see Side Sewer Permitting and Installation section below). 

Following a design developed by the County's consultant (Gray & Osborne) the Carlsborg Sewer Project constructed gravity sewer mains connecting to a pump station in Carlsborg and force mains (pressure sewer lines) to the City of Sequim via the Highway 101 bridge to a point of connection with the City of Sequim collection system at Grant Road. From there, Carlsborg wastewater is conveyed in a common sewer to the City's Water Reclamation Facility. The layout of the collection system and force main alignment can be viewed on a map below. Note on the map the green lines show the location of the initial sewer collection system and the red lines show potential future sewer mains.

Side Sewer Permitting and Installation

Prior to installation, property owners or their contractor must also submit a side sewer plan to the Public Works for review, denoting materials and standards for side sewers as required in the Carlsborg Sewer Ordinance 080(5). For more information on side sewer plan requirements, fees and to view a sample plan, visit the side sewer permitting and installation page.

A Septic Decommissioning Permit from Clallam County Environmental Health Department must also be obtained prior to issuance of the side sewer permit. Septic systems must be decommissioned per WAC 246-272A-0300.

Property owners are responsible for the cost of providing a 4" residential or 6" commercial side sewer. Click this link for a list of licensed Contractors experienced in excavating and septic system installation or request one from our office.

All work must be inspected and approved by the county prior to cover; to schedule an inspection contact 360-417-2379 at least 48 hours in advance. Inspection fees are $75/inspection.

User fees

  • Residential Customers: Base rate $26, plus $8.66 per 100 cubic feet of monthly water consumption. Based on historic water consumption data for Carlsborg, it is expected that the typical monthly sewer bill will be $70.
  • Commercial/governmental/Mixed use customers: The same rates are recommended for commercial and governmental users, rates would be multiplied by the number of equivalent residential units each user represents.

Additional Information

Clallam County Public Works Department
233 E. 4th Street, Suite 6
Port Angeles, WA 98362
Phone: (360) 417-2441


Connection Ordinance

Sewer System Map

Connection Application

Approved Wastewater Facilities Plan

Sequim & County Agreement