Transition Whatcom

The Scoop on Poop according to the State of Washington

I mentioned at the last HUB meeting that I would find the link to the State regulations on composting toilets and gray water systems.  Below are the links to those websites.  I have also attached the file in a pdf format in case that is more useful to you.  


Research on Composting Toilets

Wastewater Management Section

List of Registered On-site

Treatment and Distribution


As Established in Chapter 246-272A WAC

August 5, 2010


Wastewater Management Section



Recommended Standards and Guidance for Performance,

Application, Design, and Operation & Maintenance

Water Conserving

On-Site Wastewater

Treatment Systems

July 2007

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