Municipal Sewage Sludge
Sludge generated from urban wastewater treatment plants prior to stabilization, containing organic matter, pathogens, and solids from household and industrial effluents. Classified under HTS 3825.20.00.00 as 'sewage sludge' per chapter note defining it as arising from urban effluent treatment plants, including pre-treatment waste and unstabilized sludge.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If stabilized and suitable for use as fertilizer
Chapter note excludes stabilized sewage sludge usable as fertilizer, directing it to Chapter 31 animal/vegetable fertilizers.
If containing mainly petroleum oils or bituminous materials
Chapter note excludes wastes mainly comprising petroleum oils (heading 2710) from 'other wastes' in heading 3825.
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Import Tips & Compliance
• Verify sludge origin from urban effluent plants and unstabilized status via treatment plant certification; obtain EPA waste handling permits and pathogen testing reports; ensure transport in sealed, leak-proof containers to prevent environmental release
Related Products under HTS 3825.20.00.00
Primary Sewage Sludge from Urban Plants
Untreated primary solids settled from municipal wastewater influent, rich in organic and inorganic particulates. Falls under HTS 3825.20.00.00 as pre-treatment waste from urban effluent treatment plants, explicitly included in the chapter note definition of sewage sludge.
Unstabilized Activated Sludge
Biological sludge from activated aeration basins in municipal sewage treatment, containing microorganisms and unsettled solids. HTS 3825.20.00.00 applies as unstabilized sludge from urban effluent plants per chapter note, prior to any stabilization for land application.
Scourings from Sewage Treatment
Grit, rags, and debris scourings removed during preliminary treatment of urban wastewater. Covered by HTS 3825.20.00.00 under chapter note including 'scourings' as part of sewage sludge from effluent plants.
Urban Effluent Pre-Treatment Sludge
Sludge from physio-chemical pre-treatment stages of municipal sewage, including coagulant precipitates. HTS 3825.20.00.00 per chapter note explicitly naming 'pre-treatment waste' from urban effluent plants as sewage sludge.