Northwest Biosolids Management Association

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

The Northwest Biosolids Management Association (NBMA) is an organization dedicated to the promotion of sewage sludge as fertilizer.[1] NBMA was founded as a non-profit in 1993. Its members are mostly cities in Washington State, but it also includes members in Alaska, Idaho, Oregon, and British Columbia.

Involvement in San Francisco Sludge Controversy

In March 2010, NBMA sent a letter of support to the San Francisco Public Utilities Commission in favor of its sewage sludge compost giveaway program.[2] In their letter, they call sewage sludge "highly regulated, thoroughly researched, beneficial soil amendments."

NBMA Board

Board of Directors:


NBMA lists its members as follows.[3]

Alaska Members:

British Columbia Members:

Idaho Members: Boise

Oregon Members:

Washington State members:

Contact Information

  • Northwest Biosolids Management Association
  • 201 So. Jackson St
  • KSC-NR-0512
  • Seattle, WA 98104-3855
  • Phone: (206) 694-1145
  • Fax: (206) 263-3485
  • Web:

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