EHU Forms

The following forms can be filled out on a computer and printed.

EHU Master Application - This is the generic application for all permits that are submitted to the EHU.

Request for Investigation - Use this form to request an investigation of a failed septic system or illegal dumping/storage of solid wastes.

  • Photo Authorization - The EHU may ask for this to be filled out to give authorization to inspect and take photographs from a specified location.

Generic Blank Site Plan - A site plan is required for all permit applications, this one can be used for non-septic applications.


OSS Design Cover Sheets

 OSS Design Submittal Cover Sheet - This cover sheet is required on all design submittals for new or replacement OSS.

OSS Soil Evaluation Cover Sheet - This cover sheet is required when submitting an independent soil evaluation. It is not required if the soil evaluation is submitted as part of a system design.

OSS System Verification/Reconnection Cover Sheet - This cover sheet is required for submittal of verification/reconnection applications.


OSS Professionals’ Forms

An OSS professional (installer, pumper, and operations and maintenance provider) must submit the correct type of application annually:

Pumper's Report - This form is required to be submitted monthly.

Pumper's Log - This form is required to be submitted monthly.

Interested in becoming a licensed septic professional with Cowlitz County? View our Certification Requirements by clicking the below chart.

OSS Cert Requirements