Biogro Program


​Salem’s biosolids program, known as Biogro, formally began in 1975. The Biogro program oversees the beneficial reuse of Salem’s biosolids including contracts associated with digester cleaning, transport and application services.

The Biogro program manager is responsible for development of the program budget, beneficial reuse site authorizations, communication with clients, application strategies, the program’s future direction, active participation within the biosolids community, and all state and federal reporting and documentation requirements.


The City of Salem’s Biogro Program will provide an environmentally sound, publicly acceptable, cost-effective biosolids reuse program, while protecting public health, watersheds, and agricultural lands, in compliance with all federal, state, and local biosolids regulations and management practices.

Biogro products

Willow Lake Water Pollution Control Facility produces liquid and dewatered Class B biosolids products. Biosolids are stabilized using the mesophilic anaerobic digestion process to meet pathogen reduction and volatile solids reduction requirements in the 40 Code of Federal Regulations (CFR) 503 Regulations under 503.32(b)(3) and 503.33(b)(1).

​2016 Biosolids production and application statistics

In 2016 Salem generated 3,092.60 dry tons of biosolids. The Biogro Program managed 23 biosolids applications on 21 DEQ authorized sites consisting totaling 1,060 acres.

The sites consisted of the following:

  • Hay
  • Grass seed
  • Wheat production


2016 Annual Biosolids Report183 KBannual-biosolids-report-2016.pdf
2015 Annual Biosolids Report185 KBannual-biosolids-report-2015.pdf
2014 Annual Biosolids Report184 KBannual-biosolids-report-2014.pdf
2013 Annual Biosolids Report212 KBannual-biosolids-report-2013.pdf
2012 Annual Biosolids Report199 KBannual-biosolids-report-2012.pdf
2011 Annual Biosolids Report53 KBannual-biosolids-report-2011.pdf
2010 Annual Biosolids Report53 KBannual-biosolids-report-2010.pdf
2009 Annual Biosolids Report52 KBannual-biosolids-report-2009.pdf
2008 Annual Biosolids Report50 KBannual-biosolids-report-2008.pdf
2007 Annual Biosolids Report32 KBannual-biosolids-report-2007.pdf

Contact us

Stephanie EisnerOperations ManagerPublic Works Department
5915 Windsor Island Road N
Salem OR 97303


Additional information