Biosolids (also referred to as treated sewage sludge) are the solids derived from primary, secondary, or advanced treatment of domestic wastewater. All wastewater facilities operate under either a National Pollutant Discharge Elimination System (NPDES) or Water Pollution Control Facility (WPCF) permit.
Biosolid Analysis Package
|Total Volatile Solids
|Total Kjeldahl Nitrogen
For more information and contacts regarding permits, please visit the Oregon DEQ Biosolids Program website at https://www.oregon.gov/deq/wq/programs/Pages/Biosolids.aspx