Biosolids are produced by cleaning, recycling, and transforming 100% of the poop and food that goes down toilets and drains. To start the process, the water used by homes is transported to local wastewater treatment plants. At the plant, naturally occurring bacteria break down the solids and kill disease-causing organisms. The resulting product – biosolids – is a slow-release fertilizer full of organic matter, and a variety of nutrients to generates healthier, more productive soil.