Water Filter Pitcher / Under-Sink Water Filter — HS Code
Domestic water filters — pitcher-type with activated carbon, and under-sink reverse osmosis systems
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HS Code
8421 — Centrifuges; filtering or purifying machinery for liquids or gases
Classification Context
Chapter
Chapter 84 — Nuclear reactors, boilers, machinery
Heading
8421 — Centrifuges; filtering or purifying machinery for liquids or gases
Applicable Rule
GRI 1 — water filters and purifiers are machinery for filtering/purifying liquids under 8421.21
Prior Rulings
EU — EBTI (Binding Tariff Information)
Search EU EBTI databaseUS — CBP CROSS Ruling Database
Search US CBP CROSS rulingsUK — HMRC Trade Tariff
View UK Trade Tariff commodityClassification Notes
Domestic water filter pitchers (Brita-style, activated carbon gravity filter) are 8421.21. Under-sink reverse osmosis (RO) systems: 8421.21. Inline fridge water filters: 8421.21. Replacement filter cartridges: 8421.99 (parts). UV water sterilisers: 8421.29 or 8543.70 depending on whether UV function is primary. Water softeners (ion exchange resin): 8421.21. EU: 1.7%; UK: 1.7%; US: Free. REACH regulations require filter media not to leach harmful substances into drinking water.
MFN Duty Rates by Market
European Union
8421.21.00
EU Combined Nomenclature (CN) rate — applies to all 27 EU member states
United States
8421.21.00
US Harmonized Tariff Schedule (HTS) MFN rate — Section 301 tariffs may add to China-origin goods
United Kingdom
8421.21.00
UK Global Tariff (UKGT) — post-Brexit tariff schedule, independent of EU CN
Related searches
More Plumbing & Sanitary Ware HS codes
Official Sources & References
WCO HS Nomenclature
World Customs Organisation — the international standard behind all HS codes
wcoomd.org
EU TARIC Database
European Commission integrated tariff — EU Combined Nomenclature (CN) rates
ec.europa.eu
US HTS Schedule (USITC)
United States International Trade Commission — official US Harmonized Tariff Schedule
hts.usitc.gov
UK Global Tariff (HMRC)
His Majesty's Revenue and Customs — UK Trade Tariff post-Brexit
trade-tariff.service.gov.uk
Disclaimer: Duty rates shown are MFN (Most-Favoured-Nation) base rates sourced from live tariff database and verified April 2026. Actual duties may differ based on country of origin, applicable trade agreements (e.g. GSP, CETA, UK-EU TCA), anti-dumping measures, or changes to tariff schedules. Always verify with the official tariff database of the importing country before making customs declarations.
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