From SourceWatch
Jump to navigation Jump to search
Toxic sludge 80px.png

WARNING! Sewage sludge is toxic. Food should not be grown in "biosolids." Join the Food Rights Network.

SoundGRO is a Piece County, WA product sold as dry pellet fertilizer but made from sewage sludge.[1][2] Hundreds of communities across the U.S. sell toxic sludge products that are typically renamed biosolids and sold or given away as "fertilizer" or "compost" (and often even labeled or marketed as "natural" or "organic").

SoundGRO is produced from sludge from Pierce County's Chambers Creek Regional Wastewater Treatment Plant. It is used by the county to fertilize Chambers Creek Properties, including the Chambers Bay golf course, and it is also sold the public.[3] It is marketed as "100% natural organic nitrogen, also containing nutrients and micronutrients that are vital for the healthy growth of your plants."[4]

Sales to the Public

SoundGRO is sold in bulk or 50 pound bags through a number of Washington and Oregon distributors. Additionally, in June 2007, Pierce County offered two 50-pound bags of SoundGRO to residents for free.[5] Home gardeners are instructed to use SoundGRO on their lawns, trees, shrubs, vegetable gardens, and for annual and perennial flowers.[6] SoundGRO is a registered fertilizer in Washington, Oregon, California, Idaho and Montana.[7]

Articles and resources

Related SourceWatch articles


  1. Branded products containing sewage sludge, SludgeNews Website accessed June 3, 2010.
  2. SoundGRO Fertilizer Manufacturing, Accessed November 13, 2010.
  3. Free SoundGRO Offer Ends Soon, Accessed November 13, 2010.
  4. SoundGRO Index, Accessed November 13, 2010.
  5. Free SoundGRO Offer Ends Soon, Accessed November 13, 2010.
  6. Using SoundGRO, Accessed November 13, 2010.
  7. SoundGRO Biosolids, Accessed November 13, 2010.

External resources

External articles

This article is a stub. You can help by expanding it.