Community Compost Toilet and Urine Diversion System Using IAPMO WE•Stand © 2018

2015 - Present | ...Rebranding 'waste' as a 'resource'...

This solution offering safely reduces the volume of municipal sewage sludge typically sent for processing by sewer avoidance via separation at the source/on-site remediation of humanure using compost toilets with urine diversion AKA humus (top soil factories). This sanitary compost solution uses the 2018 IAPMO WE-Stand (Water Efficiency and Sanitation Standard). Ultimately, a rich resource is generated that can be used as a soil amendment to grow food by tiny house stewards managing hyper-intense farming on tax-defaulted, urban lots. ​

Conducted over four years, performance of a humanure batch compost processor, clearly demonstrates that high temperatures were reliably achieved with subsequent pathogen elimination to acceptable levels prior to distribution of high quality humus to the local garden environment. Additionally, urine diversion has also allowed the community to reclaim nitrogen and other nutrients otherwise lost in conventional sewage systems. The system has resulted in large savings of potable water, and significant carbon sequestration.

The ultimate aim: To be transformative leaders and change agents for rebranding waste as a resource, and developing and implementing innovative and agile eco-sanitation service options for application the built/urban environment for, where applicable and appropriate, temporary or permanent needs.

IMAGE: Courtesy of Nature Commode

6th Int'l Dry Toilet Conference Tampere, Finland | 22-24 Aug 2018

Conference paper coming soon | Currently in editorial review for inclusion in a future IWA Journal of Water, Sanitation & Hygiene for Development and/or Blue-Green Systems, Manuscript Number: WASHDev-D-19-00027

Abstract (long version)


25 Apr 2019 update - Meetings in Oakland, CA, USA at the EBMUD Ward 3, 5, 6 Annual Briefing and the Alameda County Environmental Health Department went much better than my colleague and I expected. Doors keep opening.

18 Apr 2019 update - CA District Two Water Quality Board recommended pursuing an exemption via the Alameda County Local Agency Management Plan.

Weeks of 11 & 18 Mar + 1 Apr 2019 update - Concrete conversations and meetings ensued and garnered more focused traction with the CA State and Regional (Alameda County) Water Resources Board agents, as well as the Alameda County Department of Environmental Health.

Thu, 28 Feb 2019 update - California State Senator Nancy Skinner's office has requested language for inclusion in a prospective bill to support this endeavor.

Kimberly was added as a member to the US Technical Advisory Group (TAG) to ISO/PC 31800 Community scale resource oriented sanitation treatment systems, which operates under standardization in the field of community scale resource oriented sanitation treatment systems. This international standard is defining requirements and test methods to ensure safety, performance, and sustainability of community-scale resource-oriented fecal sludge treatment units serving ~1,000-100,000 people.

Tue, 26 Feb 2019 update - The paper was assigned the following IWA WASH Manuscript Number: WASHDev-D-19-00027.

Sat, 23 Feb 2019 update - California State Assemblyman Rob Bonta suggested an eco-sanitary compost toilet system pilot project be conducted to support this endeavor.

Tue, 11 Dec 2018 update - City of Berkeley, California District Two City Councilwoman, Cheryl Davila recommended inclusion in future agendas during city council meetings the promise sanitary compost toilets provide, and for consideration as a part of the city's endeavor for installing more public toilets.

Sun, 21 Oct 2018 update - Word from my colleague and co-author is our paper is under official editing review for publication in the IWA Water, Sanitation & Hygiene for Development Journal.

Sat, 20 Oct 2018 update - Our research offering was part of the FIRST Berkeley Disaster Preparedness Fair hosted by the Berkeley Disaster Preparedness Neighborhood Network, and City of Berkeley District Two Councilwoman, Cheryl Davila.

Sat, 13 Oct 2018 update - Attended US House of Representative Barbara Lee's Town Hall to share the urgent need for hygienic, safe, sanitary, thermophilic human excreta (humanure) composting to address the open-defecation problem by the homeless population in Alameda County, CA, USA. She was the recipient of this one-page summary originally dispatched to her office on 18 Sept 2018.  

Fri, 24 Aug 2018 update - Word from my colleague and co-author on our presentation and paper is it was VERY WELL received, receiving a great deal of attention at this conference! Now, we wait to hear from the IWA Water Science & Technology Journal folks about their accepting our paper for publication.



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