Septic Systems

Septic Systems

The Purpose Of On-Site Septic System (OSS) Program Is To Ensure Proper Treatment And Disposal Of Wastewater To Protect Our Drinking Water And The Environment. We Issue Septic Permits, Inspect Final Septic Installations, And Investigate Complaints Associated With On-Site Sewage Systems

Are you trying to figure out how to get a septic system installed? 

Our permitting process and requirements are detailed in this step-by-step form: New Septic Installation Process

What is considered a bedroom?

CDHD Policy Statement – Bedrooms


Anyone who installs, alters, or repairs an on-site septic system is required to first obtain a permit from Chelan-Douglas Health District. Installation of a system requires site and soil evaluations to ensure an appropriate and adequate system is installed.

To apply for any of the following:

  • New Construction – Septic System
  • New Construction – Intermediate (>1000 gpd)
  • Private Water Review
  • Repair
  • Tank Replacement Only
  • Project Review
  • Septic Re-design
  • Soil Evaluation
  • Permit Reactivation
  • Short Term Rental Review

Please complete our Master Application and return it to the Chelan Douglas Health District with the appropriate fees.

Transferring A Permit

If you would like to transfer a Septic System Permit, please fill out our On-Site Sewage System Permit Transfer Form.  There is no fee to transfer a permit to another name.

Designing And Installing An On-Site Septic System

All work related to the design, installation, maintenance, operation, and repair of all conforming and non-conforming onsite septic systems shall only be completed by an appropriately licensed and/or certified professional.

Find A Licensed Designer Here

Find out what you need to do to become a licensed installer

Installer Application

Operation And Maintenance

The Washington Administration Code, Chapter 246-272A-0270 details homeowner maintenance responsibilities for septic systems.  Operation and maintenance (O&M) is about OSS functioning properly and being cared for correctly. In order for an OSS to continue to function properly, care must be taken by those responsible for it. Proper monitoring, correct operation and maintenance are the responsibility of the OSS owner.

OSS evaluations must be done by a licensed O&M Specialist. See the list of licensed qualified O&M providers to perform Operation and Maintenance on your septic system.

A Report is completed at the time of the evaluation by the O&M Specialist.

An O&M Agreement will be required for select enhanced treatment septic systems and designs.

OSS evaluations should be performed once every three years for conventional gravity systems (systems consisting of only septic tank and drainfield) and annually for all other systems unless specified by the manufacturer.

All Provider Permits expire yearly on September 30th.

More information on septic system operation and maintenance

Pumping Your Septic System

See the list of pumpers to find a licensed pumper in Chelan and Douglas Counties.

Please complete the pumper application if you’re interested in becoming a licensed pumper.

All Provider Permits expire yearly on September 30th.

Septic System Failure

For information on failing septic systems, please see our Septic Failure Brochure.

Septic Public Records Request

CDHD maintains records of Septic related documents. If you would like to request documents, fill out a Septic Record Request Form and email the request to (Please be as specific as possible for the documents that you desire)

Records Available

  • As-Built: A drawing or schematic of the septic system as it was installed.
  • Septic Permit: A document stating the approval of the designed septic system, a short summary of system capacity (number of bedrooms), property description, and additional requirements.
  • Site Evaluation: A document detailing the soil types and general topography found in the area.
  • Application: Our application that is filled out by the applicant for the proposed use.
  • Design: A detailed document that illustrates the proposed septic system to be installed, 
  • Operation & Maintenance: A form stating the condition of the septic system, including the inspection and maintenance actions taken. 
  • Water Information: May include a combination, or none of the following - Well/Pump test reports, Lab analysis documents, Well agreements, Water Availability letters, Restrictive Covenants, Water Right, Joint use agreement

Frequently Asked Questions

  1. Who needs septic As-Built information?

State Law requires homeowners to maintain their septic systems. As-Built drawings illustrate the tank, drain field, and auxiliary equipment. This information is also useful for:

  • Owners performing landscaping or building.
  • Septic professionals performing construction or repair
  • Real estate professionals preparing for purchase or sale.
  1. What information is in an As-Built?

The information can differ based upon the year and individual creator of the As-Built, but often includes:

  • Year installed
  • Location
  • Tank Size
  • Drain field location and size

As-Built Record Drawing Form

This form is to be used after installation is completed (Usually submitted by installer or designer of the system). Please complete this form and return to the Chelan-Douglas Health District: As-built Record Drawing Form


Click here to Report a Complaint

Additional Information On Septic Systems

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