Biosolids photo identifier

Event Recycling

Biosolids ready for land application to Dry Land Winter Wheat
Biosolids ready for land application to Dry Land
Winter Wheat


The average person in the United States uses approximately 100 gallons of water per day - washing hands, dishes, laundry, prepping food, showering, etc. Unless you use a septic system, all of your water is piped to the local wastewater treatment plant for processing. You may already know that the treated water is discharged into a river or bay, but did you know that the organic material left behind is equally important?

After treatment, this material becomes biosolids - a valuable source of nutrients that can be used to improve soil and support plant life and crops. Biosolids are more environmentally friendly than chemical fertilizers because they add organic matter to enrich depleted soils and fibrous matter to improve the soil's ability to hold water. Biosolids are used as a fertilizer and soil amendment on agricultural land and forests, and on mine and land reclamation sites.

Biosolids are the ultimate in recycling - taking something that was considered a waste, treating it, and converting it to a valuable product that benefits the environment.

How wastewater treatment plants make biosolids

Protecting human health and the environment

How biosolids are used in Washington