By recycling biosolids we are completing the natural cycle - sustainably. Cycling the organic matter that comes from all of us back to the soil for growing is critical. It connects the carbon cycle, allowing natural carbon sequestration and reducing greenhouse gas emissions and climate change issues. Biosolids are also important to the nitrogen and phosphorus cycles; key sources of plant nutrition (high in nitrogen and micro and macro-nutrients). The Earth's phosphorus supplies are diminishing and will be gone in the next 100 years. They retain water so water-soluable nutrients stay in the soils (not running off and polluting local water ways like "hot" synthetic fertilizers). Biosolids are treated to remove pathogens, have been used safely for decades, and their highly rich properties have a protection effect that keeps metals and other pollutants in soils and not available to plants.
