Section VI — Products of the chemical or allied industries
Chapter 38 — Miscellaneous chemical products
Heading 3825 — Residual products of the chemical or allied industries, not elsewhere specified or included; municipal waste; sewage sludge; other wastes specified in Note 6 to this Chapter.
Subheading 3825.20 — Sewage sludge
HS code
3825.20.00 Sewage sludge
Last Verified Date - 1 October 2026
Common commodities
Treated municipal wastewater solidsIndustrial sewage sludgeActivated biosolids from wastewaterSecondary effluent residue from clarification processesPrimary sludge from wastewater treatmentWastewater clarifier residuesSewage treatment plant solidsEffluent solids from municipal sewage treatmentIndustrial activated sludge byproductMunicipal sewage sludge after treatment