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Biosolids are something we all create. They begin as waste — your poop to be exact. If there is a flush, there will be biosolids.

But what comes after you flush is the fascinating part!

Inspired by nature, scientists and engineers developed wastewater treatment processes that turn what you flush into valuable nutrients, renewable energy, and clean water.

These resources are created locally, follow the highest quality standards rooted in research, and are regenerated daily so that we can continue to live sustainably.

Curious about what happens after you flush? Join the journey with Viewpoint

Biosolids Are Heavy

Biosolids Are Heavy

The average person contributes about 17 kg (37 lb) annually to biosolids.

Collectively in the U.S. we produce about 5.8 million dry tons each year.

Biosolids Are Useful

Biosolids Are Useful

Biosolids use varies by state, but agriculture takes a clear lead with 2.3 million dry tons used annually. See the usage numbers for your state.

Even if we used all biosolids generated, it would only cover 0.1% of available agricultural land.

Biosolids Deliver Nutrients

Biosolids Deliver Nutrients

Returning nutrients back to the soil we harvested them from ensures we sustain the ground that feeds us.

36 billion tons of soil are lost annually across the globe. Biosolids increase soils’ ability to store carbon – keeping it out of the air, and helping to reduce GHG emissions.

Biosolids Create Jobs

Biosolids Create Jobs

Biosolids help create resilient local economies. They create jobs for thousands of people — processing facility operators, laboratory technicians, haulers, landscapers, farmers, and more.

Biosolids Are Here to Stay

Biosolids Are Here to Stay

With every flush, you become part of this regenerative resource story. If you are interested in lifting the lid and learning more about biosolids, check out this Flusher engagement platform with Friday Flushes and Fun Fecal Facts: https://yearofpoo.org.

Want More Biosolids?

Want More Biosolids?

Visit www.wef.org/biosolids, where you have access to fact sheets, project spotlights, and a network of professionals ready to help field your questions.

Thank you to the supporters of this project

  • Bay Area Biosolids Coalition
  • California Association of Sanitation Agencies
  • Denali Water
  • DC Water
  • Insinkerator
  • Merrell Brothers
  • Mid-Atlantic Biosolids Association
  • National Association of Clean Water Agencies
  • Northwest Biosolids
  • Orange County Sanitation
  • Resource Management Inc.
  • Synagro
  • Water Environment Association of Texas
  • Water Environment Federation
  • Virginia Biosolids Council