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Biosolids are nutrient-rich organic materials resulting from wastewater treatment. During treatment, bacteria and other tiny organisms break sewage down into simpler, harmless organic matter that contains essential plant nutrients. The organic matter, also known as sewage sludge, is then treated to sufficient quality for beneficial reuse and becomes known as biosolids. You may click on the links below for information on Orange County's Biosolids Recycling Program.
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County Departments 
