HS code for water filters
HS code
8421.21
US HTS code
8421.21.00
US general duty
Free
Source: USITC Harmonized Tariff Schedule, Revision 21 (2026), effective 10/09/2026 · checked 2026-10-28
Machinery for filtering or purifying water, including filter pitchers and under-sink systems, is 8421.21.
US tariff lines under 8421.21
| US HTS code | Description | General duty |
|---|---|---|
| 8421.21.00 | Filtering or purifying machinery and apparatus for liquids › For filtering or purifying water | Free |
Import duty on water filters by country
Import into the US
Free
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Import into the UK
0%
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Import into the EU
1.7%
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Extra duties may apply
The general rate applies to most countries. Imports from some countries also pay additional duties under Chapter 99 of the HTS, such as Section 301 tariffs on many Chinese goods. Check the current measures for your country of origin before you order.
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Frequently asked questions
Q1What is the HS code for water filters?
Q2What is the US import duty on water filters?
Q3What is the 10-digit HTS code for water filters?
Q4Is the HS code the same in every country?
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New to customs terms? Read what an HS code is and our guide on how to calculate landed cost.
Classification guidance only, not a binding ruling or customs advice. The right code depends on your product’s exact material, function and construction. For certainty, request a binding ruling from U.S. Customs and Border Protection or ask a licensed customs broker.