HS 382520 Sewage sludge
Quick Answer: Sewage sludge imported under HS 382520 enters the UK duty-free, the US duty-free under the MFN rate, and the EU at 6.50% ad valorem. This Harmonized System code specifically covers waste materials from the treatment of urban wastewater, and similar waste materials. For importers and customs brokers, it is crucial to verify the specific national tariff rates and any associated import regulations or permits required for this type of waste material, as environmental controls can be stringent. CustomTariffs aggregates this data for compliance professionals.
What Are the Import Duty Rates?
🇬🇧 United Kingdom
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 3825200000 | 0.00 % | — | — |
🇪🇺 European Union (TARIC)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 3825200000 | 6.50 % | — | — |
🇺🇸 United States (HTSUS)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 3825200000 | Free | — | ["kg"] |
Duty rates sourced from the USITC (US International Trade Commission) Harmonized Tariff Schedule (HTS) (accessed 2/22/2026), EU TARIC – DG TAXUD (Directorate-General for Taxation and Customs Union) (accessed 2/22/2026), and UK Trade Tariff – HMRC (His Majesty's Revenue and Customs) (accessed 2/22/2026).
Data compiled and presented by HSRates.
How Has Trade Volume Developed?
Trade Volume 2023
How to Classify This HS Code?
What products does HS 382520 cover?
This subheading covers sewage sludge, which is the residual solids and semi-solids removed from municipal or industrial wastewater treatment processes. According to the World Customs Organization (WCO) Harmonized System Explanatory Notes, this category includes sludge from septic tanks and other on-site treatment facilities, as well as sludge from municipal sewage treatment plants. The USITC Harmonized Tariff Schedule (HTS) and the EU's TARIC system align with this definition, encompassing treated or untreated sludge intended for disposal or potential reuse as fertilizer, provided it meets the specific characteristics of sewage sludge.
What falls outside HS 382520?
The following products are excluded from HS 382520: industrial process residues not specifically derived from sewage treatment, such as chemical precipitates from other industrial operations, and animal excreta not mixed with wastewater. For instance, pure animal manure, even if used as fertilizer, would typically be classified elsewhere. Similarly, sludges containing significant quantities of hazardous industrial waste that require specialized disposal under other headings would not fall under this subheading. The key differentiator is the origin from sewage or septic tank treatment.
What are common classification mistakes for HS 382520?
A common error is misclassifying treated sewage sludge that has undergone significant processing to become a distinct product, such as a manufactured fertilizer with added nutrients. General Interpretative Rule 1 and Rule 3(b) of the Harmonized System are crucial here; if the sludge is mixed with other substances to form a new product, it may be classified under the heading for that new product. Importers may also incorrectly classify industrial sludges that are not derived from wastewater treatment processes, overlooking the specific definition of "sewage sludge."
How should importers classify products under HS 382520?
The correct procedure for classifying products under HS 382520 involves a thorough examination of the product's origin and composition. Importers and customs brokers must ascertain if the material is indeed residual solids from wastewater treatment. Reviewing the supplier's documentation, including technical data sheets and safety data sheets, is essential. Cross-referencing this information with the WCO Explanatory Notes and the specific tariff schedule of the importing country, such as the UK Trade Tariff, will confirm the appropriate classification.
How is the duty calculated for products under HS 382520?
A shipment of 10 metric tons of dewatered sewage sludge, declared at a customs value of $2,000 USD, would attract a US duty of $0.00. This is because the Most Favored Nation (MFN) duty rate for HS 382520 in the USITC Harmonized Tariff Schedule is 0% ad valorem. Therefore, the duty calculation is 0% × $2,000 USD = $0.00. This reflects the duty-free status often granted to such waste materials under various tariff schedules, including the US HTS.
Which trade agreements reduce duties for HS 382520?
Several free trade agreements may reduce the applicable duty rate for HS 382520, including the United States-Mexico-Canada Agreement (USMCA). Under USMCA, eligible sewage sludge originating from Canada or Mexico would be classified as "Free." To claim this preferential rate, a self-certified origin statement, compliant with USMCA requirements, must be provided to US Customs and Border Protection. Currently, there are no other major trade agreements that specifically list preferential rates for sewage sludge from other significant trading partners that would result in a lower duty than the MFN rate.
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FAQ
What are the import duty rates for HS code 382520 (Sewage sludge)?
The import duty rates for HS code 382520 (Sewage sludge) vary by country. For example, under the U.S. Harmonized Tariff Schedule (HTS), the general (MFN) duty rate is Free. However, preferential rates under Free Trade Agreements may apply. In the European Union, under the TARIC system, the rate is also typically Free for most origins, but specific trade agreements or temporary measures could influence this. Always consult the specific tariff schedule of the importing country for the most current and accurate rates.
How is sewage sludge classified under HS code 382520, and what are the classification criteria?
HS code 382520 specifically covers 'Sewage sludge'. This classification generally applies to sludge resulting from municipal sewage treatment processes. The key criterion is its origin and nature as a residual product of wastewater treatment. It is important to distinguish this from other types of industrial waste or by-products that might fall under different HS codes. The World Customs Organization (WCO) provides Explanatory Notes that clarify the scope of this heading, emphasizing that it pertains to sludge from the treatment of domestic sewage.
What documentation is typically required for importing sewage sludge under HS code 382520?
Importing sewage sludge under HS code 382520 often requires specific documentation beyond standard customs declarations. This may include a certificate of origin, a bill of lading, and commercial invoice. Crucially, importers must be aware of and comply with environmental regulations and permits from the importing country's environmental protection agency. This can involve waste manifests, treatment certificates, and proof of compliance with disposal or reuse regulations. Consult the importing country's environmental and customs authorities for a comprehensive list.
How is the duty calculated for sewage sludge if a duty rate were applicable, and can you provide an example?
While HS code 382520 often carries a Free duty rate in many major economies, if a duty were applicable, it would typically be calculated as either an ad valorem rate (a percentage of the value) or a specific rate (a fixed amount per unit of weight or volume), or a combination. For instance, if a hypothetical duty rate of 6.50% ad valorem applied to an import of sewage sludge valued at $10,000, the duty would be calculated as: $10,000 (value) × 0.0650 (6.50% duty rate) = $650.00. If a specific duty applied, such as $5 per metric ton, and the shipment was 20 metric tons, the duty would be: 20 metric tons × $5/metric ton = $100.00. Always verify the applicable duty calculation method and rate with the official tariff schedule.
Do common trade agreements, such as USMCA or EU trade deals, offer preferential duty rates for sewage sludge (HS 382520)?
Yes, trade agreements can significantly impact duty rates for HS code 382520. For example, under the United States-Mexico-Canada Agreement (USMCA), goods traded between these countries may qualify for preferential duty rates, often Free, provided they meet the rules of origin. Similarly, the European Union has numerous Free Trade Agreements (FTAs) with various countries, which can reduce or eliminate duties on goods classified under HS 382520. Importers should verify the specific terms and rules of origin for any applicable trade agreement to determine eligibility for preferential treatment.