Sustainable Sanitation Alliance
www.susana.org/

Seattle Public Utilities Rates Information- www.seattle.gov/util/Services/Billing/Rates_Summary/index.asp

“What Are Composting Toilets” article by Chris McClellan www.motherearthnews.com/ask-our-experts/what-are-composting-toilets-zb0z09zblon.aspx

“Composting Toilet: Economic Benefits of Compost” article by Justin Rademaekers
 www.suite101.com/content/composting-toilet-systems-a208802

Envirolet Composting Toilet World- http://compostingtoilet.org/compost_toilets_explained/the_benefits_of_composting_toilets/index.php

Sun-Mar Excel Toilet and the Kathy Escott/Bob Cremins Residence Case Study
www.sun-mar.com

 
U.S. EPA “Water Efficiency Technology Sheet: Composting Toilets”  (1999)
http://permanent.access.gpo.gov/websites/epagov/www.epa.gov/OWM/mtb/comp.pdf

Elwing, Trent.  “The Scoop on Picardo Farm P-Patch’s Composting Toilet.”  P-Patch Post.   Spring 2010.
www.ppatchtrust.org/wp-content/uploads/2010/04/p-patch-spring-2010-for-the-web.pdf

Washington State Department of Health.  “Recommended Standards and Guidance for Performance, Application, Design, and Operation & Maintenance Water Conserving On-Site Wastewater Treatment Systems.”   July 2007.  www.doh.wa.gov/ehp/ts/ww/Water_Conservation_8-29-07.pdf

Cascadia Region Green Building Council.   C.K. Choi Building fact sheet
http://cascadiagbc.org/resources/case-studies/ckchoicasestudy.pdf