The bill amends several sections of the Revised Code of Washington (RCW) related to the management and testing of biosolids, specifically focusing on the presence of PFAS (per- and polyfluoroalkyl substances) chemicals. Key amendments include a redefinition of terms, such as changing "population increases" to "population growth" and clarifying the definition of "biosolids" to include septic tank sludge. The bill mandates the Department of Ecology to establish a biosolid management program that aligns with federal regulations and requires facilities generating biosolids to sample for PFAS chemicals according to new guidelines. These guidelines will be published by July 1, 2026, and facilities must begin testing by January 1, 2027, with results submitted to the department by September 30, 2028.

Additionally, the bill establishes an advisory committee to consult on the requirements and standards for PFAS testing in biosolids, ensuring input from various stakeholders, including the farming community and local governments. The department is also tasked with submitting a report by July 1, 2029, summarizing the analysis of PFAS levels in biosolids and providing recommendations based on the findings. The bill emphasizes the importance of public health and environmental safety in the management of municipal sewage sludge, which is recognized as a valuable resource when properly managed.

Statutes affected:
Original Bill: 70A.226.005, 70A.226.007, 70A.226.010, 70A.226.020, 70A.226.030
Substitute Bill: 70A.226.005, 70A.226.007, 70A.226.010, 70A.226.020, 70A.226.030
Bill as Passed Legislature: 70A.226.005, 70A.226.007, 70A.226.010, 70A.226.020, 70A.226.030
Session Law: 70A.226.005, 70A.226.007, 70A.226.010, 70A.226.020, 70A.226.030