We've made some changes to EPA.gov. If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

Biosolids

Basic Information about Biosolids

  • The term sewage sludge is used in EPA regulations that establish a protective regulatory framework to manage the use and disposal of sewage sludge.
  • The terms biosolids and sewage sludge are often used interchangeably.
  • When properly treated and processed, sewage sludge becomes biosolids which are nutrient-rich organic materials produced from wastewater treatment facilities.
  • Biosolids can be recycled and applied as fertilizer to improve and maintain productive soils and stimulate plant growth.
  • Effective sewage sludge and biosolids management options help ensure that useful materials are recycled on land and harmful materials are not released to water bodies.