Customs Tariff of Canada · tariff item · HS 8421.21
8421.21.00.00: For filtering or purifying water
Water filtering and purifying machinery
✓ Can be used in a customs declaration Data: Customs Tariff of Canada, in force from 11 September 2026 · checked on 24 October 2026
- 8421 Centrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus, for liquids or gases.
- 84212 Filtering or purifying machinery and apparatus for liquids:
- 8421.21.00 For filtering or purifying water
- 8421.21.00.00 For filtering or purifying water
What you pay
Importing into Canada
Customs duty only: import VAT, other taxes and trade defence duties of this country are not covered here, and the duty calculator works only with the EU, Türkiye, US and UK tariffs.
Same subheading in other tariffs
8421.21 For filtering or purifying water
UK Free Third-country duty 2 tariff lines 
EU 1.7% Third-country duty 1 tariff line 
Türkiye 1.7% Third-country duty 1 tariff line 
USA Free General (MFN) 1 tariff line 
Mexico Free – 5% General (MFN) 5 tariff lines · average 2% 
Brazil 20% General (MFN) 1 tariff line 
Argentina 12.6% General (MFN) 2 tariff lines 
Peru Free General (MFN) 2 tariff lines 
New Zealand Free General (MFN) 1 tariff line 
Japan Free General (MFN) 1 tariff line 
Taiwan 3.4% – 4% General (MFN) 2 tariff lines · average 3.7% 
GCC 5% General (MFN) 4 tariff lines 
Switzerland Free General (MFN) 1 tariff line 
Norway Free General (MFN) 1 tariff line 
North Macedonia Free General (MFN) 1 tariff line 
Nigeria 5% General (MFN) 2 tariff lines Binding rulings for similar goods
Decisions of U.S. Customs and Border Protection (CROSS) and HMRC (Advance Tariff Rulings) on goods classified here. A ruling binds only its holder, but shows how the authorities classify similar goods. The descriptions are the authorities’ own, in English.
- N361715 U.S. CBP
The tariff classification of a robot pool cleaner from Vietnam
- N360559 U.S. CBP
The tariff classification and country of origin of the Lex Aqua closed-loop water treatment system
- N359248 U.S. CBP
The tariff classification of a robotic pool skimmer from China
- N359001 U.S. CBP
The tariff classification, country of origin, and eligibility of the United States-Mexico-Canada Agreement of an Electrochemical Water Purification System
- 600014420 HMRC
Salt system cartridge. Made from 2 metal plates with plastic handles, the function is to purify water in hot tubs. Fitted into a custom-made chamber on the hot tub rim, the metal plates are suspended in the water and react with salt to create naturally produced chlorine, to purify the water. The…
57 rulings in total for this code
Legal notes
Tariff item 8421.21.00.00 is a line of the Customs Tariff of Canada under HS subheading 8421.21 (for filtering or purifying water).
The MFN tariff rate is free, and quantities are declared in NMB.
For the same subheading, the UK duty is free, the EU duty is 1.7%, the Türkiye duty is 1.7%, the US duty is free, the Mexico duty is 0%–5%, the Brazil duty is 20%, the Argentina duty is 12.6%, the Peru duty is free, the New Zealand duty is free, the Japan duty is free, the Taiwan duty is 3.4%–4%, the GCC duty is 5%, the Switzerland duty is free, the Norway duty is free, the North Macedonia duty is free and the Nigeria duty is 5%.
Canada imported goods of subheading 8421.21 worth US$377m in 2024; the largest supplier was the United States.
Questions and answers
What is the Canada import duty for tariff item 8421.21.00.00?
The MFN tariff rate in the Customs Tariff of Canada is free; the supplementary unit is NMB. This page shows the rate as published by the national source and, where the source publishes them, preferential rates: choose the country of origin to see them. Trade defence duties and VAT are not covered.
Where does Canada import these goods from?
For subheading 8421.21 as a whole, the largest supplier in 2024 was the United States (US$229m), followed by China.
Typical products
- electro magnetic water purifiers
- filter presses, for liquids
- hot tub water purifier
- water filters
- water purifying machinery and apparatus
- water purifying systems
Everyday names, not part of the legal text.