1. 2002-01-01 A composting toilet is any system that converts human waste into compost through the natural breakdown of organic matter. The photo above shows a composting toilet from the late 1800’s. Composting toilets provide a sanitary method to recycle human waste while conserving water and protecting the...
  2. The modern-day sewer system has failed. In the United States, our clean water infrastructure was rated a D from the American Society of Civil Engineers (2013). Sewage overflows cause beach closures, spread illnesses, and contaminate the environment. And this is happening in places that actually...
  3. 1988-01-01 51 pages, illustrated
  4. 2005-01-01 48 pages, illustrated
  5. 2007-01-01 Most people in rural Africa do not have access to safe toilets, and their health and well-being suffers as a consequence. There is an urgent need for the construction of simple, low-cost, affordable toilets that are easy to build and maintain. Notebook with 100 pages, photos
  6. This site is about vermicomposting flush toilets – on-site processing of domestic sewage with worms. These aren’t the first vermicomposting sewage systems by any means, but they’re the first (to our knowledge) to be based on open source principles with non-proprietary technology and low cost...
  7. 2019-10-01 An exploration of the need for a shift in the current paradigm of human "waste" and the pleasingly simple science that offers a solution; we will look at the different sanitation situations around the world, how and why they may be problematic, discuss the most appropriate ecological solutions on...
  8. 2010-07-20 We often come across interesting material related to articles in EDN that could not fit into the available space in the issue. We share the most relevant of those here.
  9. 2010-07-20 One high quality and universally available source of all the major macronutrients (nitrogen, phosphorus and potassium) is human urine. Using human urine as fertilizer is not unprecedented, but for various reasons in most countries it is not commonly considered as an option, especially for growing...
  10. 2017-10-03 There are many appropriate building technologies available. How environmentally friendly are they? Earthquake resistant? Typhoon resistant? How can we introduce new materials to a traditional construction culture? Why would we want to produce our own materials? How can we make production...