Biosolids

Biosolids are nutrient-rich organic matter recovered and derived from the wastewater treatment process. Also known as treated sewage sludge, biosolids generated at OC San are utilized as a high-quality bulk soil amendment for farms and compost facilities that create products for agriculture, nurseries, or home gardens.

For more information on OC San biosolids, including where our biosolids are recycled, how to obtain biosolids compost, and compliance information visit the links below.