Lagoons treat livestock manure and store the treated products until final use, generally for application to soil for recycling into crop production. Lagoons designed and operated to break down manure solids can reduce organic matter and nitrogen by more than 50%.

Lagoons can be designed and operated for the individual needs. Designing storage lagoons to fit local weather conditions will provide ample storage of manure and wastewater and will meet the no-discharge requirements of the Washington Department of Ecology and the U.S. Environmental Protection Agency. Additional design considerations fit the storage to cropping and labor cycles of the operation.

Adding storage for recycled flush water is popular with many dairy and swine operators. Lagoon failure can be traced to improper design, construction and management.