Sewage Treatment Sludge from Mexico
Dehydrated primary sludge from municipal wastewater treatment containing organic solids and grit. HTS 3825.90.0100 excludes stabilized fertilizer sludge but includes unstabilized urban effluent treatment waste per chapter note. Not classifiable as chapter 31 fertilizer.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Test for stabilization (pathogen reduction) to avoid chapter 31 reclassification
• Bag solids <50% moisture content for containerized overseas transport
• Obtain wastewater treatment plant discharge records for chain of custody