While by 2020 most EU Member States will be reusing and recycling at least 50% of their municipal waste, landfilling less than 35% of biodegradable waste, and recycling at least 55% of packaging, forecasts are more difficult to determine for Mediterranean Partner Countries. The CLIMA project, and its regional platform of Italian, Tunisian and Lebanese municipalities, public agencies and NGOs, aims to cope with environmental, economic and social problems of organic waste mismanagement in three Mediterranean countries, developing policy tools like integrated Municipal Waste Management Plans, innovative technical solutions such as the compost drum and two improved pilot compost sites. At the same time, the project will support local businesses active in the circular economy sector, as well as information and advocacy campaigns to change citizens’ attitude towards zero waste paradigm. Through the project, around 80,000 citizens in 3 municipalities will benefit from the reduction of waste production due to the increase of treated organic waste.