The AMSA 2000/2001 Survey of Dioxin-like Compounds in Biosolids: Statistical Analysis
In October 2000, the Association of Metropolitan Sewerage Agencies (AMSA) (now called the National Association of Clean Water Agencies or NACWA) began a voluntary survey to determine current levels of dioxin-like compounds in sewage sludge. These data were collected to help determine whether dioxin concentrations in sewage sludge had decreased since earlier surveys. The survey was open to all publicly owned treatment works in the U.S. After this survey the EPA conducted their own NSSS.