* Sweden is the leader in Europe to put ecosan into practice at a larger scale. For example, Tanum Municipality in Sweden has introduced urine separation toilets due to their very rocky and challenging terrain initially, and later also to recover phosphorus.
* Sweden has also made it possible in 2013 to certify safe and sanitized blackwater (urine and human excreta) from blackwater systems and for further use as a recognized fertilizer. Such blackwater systems could be vacuum toilets or septic tanks. The criteria for the certification have been developed by the Swedish Institute for Agricultural and Environmental Engineering and may pave the way for farmers to use human waste for agricultural production. The Federation of Swedish Farmers have been active in this development. Furthermore, the Swedish EPA in their last proposal in 2014 has downgraded the hygiene risk associated with urine. 
* Stockholm Environment Institute (SEI) ran a large worldwide ecosan research programme called "Ecosanres" from 2001 to 2011. One of the "dry ecosan" pilot projects (i.e. with using dry toilets) of this programme was a large scale implementation of UDDTs in multi-story buildings together with other technologies to allow resource recovery from excreta. This project was called the Erdos Eco-Town Project in a town called Erdos in the Inner Mongolia Autonomous Region of China. It was a collaboration between the Dongsheng District government in Erdos and the Stockholm Environment Institute and aimed to save water and provide sanitation services in this drought-stricken and rapidly urbanizing area of northern China. For a variety of technical, social and institutional reasons, the UDDTs were removed after only a few years and the project failed to deliver in the area of nutrient recovery. This project is now well documented and has raised more awareness of the challenges and disadvantages of "urban ecosan".
*The Rich Earth Institute in Brattleboro, Vermont, US, is an NGO dedicated to reclaiming human urine as fertilizer. They have established the only community-scale urine nutrient reclamation program in the United States and are researching and developing treatment technologies to optimize the use of urine as fertilizer.
* SOIL in Haiti built what they call "ecosan toilets" (UDDTs) as part of the emergency relief effort following the 2010 Haiti earthquake. More than 20,000 Haitians are currently using SOIL ecological sanitation toilets and SOIL has produced over 400,000 liters of compost as a result. The compost is used for agricultural and reforestation projects. SOILs composting process is effective in inactivating Ascaris' eggs – an indicator for helminth eggs in general – in the excreta collected from the dry toilets within 16 weeks. The composting and monitoring methods used by SOIL in Haiti may serve as an example for other international settings.
* Sanitation First, an NGO in the UK is building ecosan facilities (UDDTs) in various parts of the developing world. They predominantly work in Tamil Nadu (India), where the Tamil Nadu State Government provides subsidies for their work. They have also constructed ecosan in other parts of rural India, Kenya and Sierra Leone. According to their website, 58,000 people worldwide are using their ecosan toilets in 2021.
* The NGO CREPA which was operating in the French-speaking West Africa region (now called WSA – Water and Sanitation in Africa) was very active in ecosan promotion from 2002 to 2010 with a strong focus on UDDTs coupled with reuse in agriculture, especially in Burkina Faso.