Subheading · Chapter 84 · Heading 8421
8421.21: For filtering or purifying water
Water filtering and purifying machinery
8421.21 is the HS subheading for water filtering and purifying machinery, under heading 8421 in chapter 84.
What you pay
Importing into UK
Rates by national line · UK Global Tariff
UK lines →- 8421 21 00 00 For filtering or purifying water
- 8421 21 00 10 For use in civil aircraft Free
- 8421 21 00 90 Other Free
Additional duties and import rules
Charges on top of the customs duty, and rules the goods must meet at the border.
Additional duties and charges 3
- Additional dutyAdditional duties 35%
- Applies to goods from
- Belarus, Russia
- Legal act
- 2022 No. 376
- Documents
- 9008
- Duty suspensionAirworthiness tariff suspension Free
- Applies to goods from
- all countries
- Legal act
- S.I. 2018/1249
- Documents
- C119 Authorised Release Certificate — EASA Form 1 (Appendix I to Annex I to Regulation (EU) No 748/2012), or equivalent certificate
- Duty suspensionSuspension - goods for certain categories of ships, boats and other vessels and for drilling or production platforms Free
- Applies to goods from
- all countries
- Legal act
- 2020 No. 1431
- Documents
- C990 End use authorisation ships and platforms (Column 8c, Annex A of Delegated Regulation (EU) 2015/2446)
- Tariff lines
- on 1 of 2 lines
Import requirements 3
- Prohibition or restrictionImport prohibition
- Applies to goods from
- North Korea
- Legal act
- S.I. 2019/411
- Import controlRestriction on entry into free circulation
- Applies to goods from
- Russia, Ukraine
- Legal act
- 2023 No. 440, S.I. 2022/395
- Documents
- 9011
- 9022
- 9038
- 9009
- 9010
- 9017
- Import controlImport control on restricted goods and technologies
- Applies to goods from
- North Korea
- Legal act
- S.I. 2019/411
- Documents
- Y920 Goods other than those described in the footnotes linked to the measure
Preferential rates by country
| Agreement or scheme | Countries | Rate |
|---|---|---|
| standard rate (no agreement) | — | Free |
| DCTS Comprehensive | Afghanistan, Angola, Bangladesh, Benin and 38 moreAfghanistan, Angola, Bangladesh, Benin, Bhutan, Burkina Faso, Burundi, Cambodia, Central African Republic, Chad, Comoros, Congo - Kinshasa, Djibouti, Eritrea, Ethiopia, Gambia, Guinea, Guinea-Bissau, Haiti, Kiribati, Laos, Liberia, Malawi, Mali, Mauritania, Myanmar (Burma), Nepal, Niger, Rwanda, São Tomé & Príncipe, Senegal, Sierra Leone, Somalia, South Sudan, Sudan, Tanzania, Timor-Leste, Togo, Tuvalu, Uganda, Yemen, Zambia | Free |
| European Union (including code "EU") | Free | |
| DCTS Enhanced | Algeria, Bolivia, Cape Verde, Congo - Brazzaville and 13 moreAlgeria, Bolivia, Cape Verde, Congo - Brazzaville, Cook Islands, Kyrgyzstan, Micronesia, Mongolia, Nigeria, Niue, Pakistan, Philippines, Sri Lanka, Syria, Tajikistan, Uzbekistan, Vanuatu | Free |
| CARIFORUM | Antigua & Barbuda, Bahamas, Barbados, Belize and 10 moreAntigua & Barbuda, Bahamas, Barbados, Belize, Dominica, Dominican Republic, Grenada, Guyana, Jamaica, St Kitts & Nevis, St Lucia, St Vincent & the Grenadines, Suriname, Trinidad & Tobago | Free |
| OCTs (Overseas Countries and Territories) | Anguilla, Bermuda, British Indian Ocean Territory, British Virgin Islands and 7 moreAnguilla, Bermuda, British Indian Ocean Territory, British Virgin Islands, Cayman Islands, Falkland Islands, Montserrat, Pitcairn Islands, South Georgia & South Sandwich Islands, St Helena, Turks & Caicos Islands | Free |
| Central America | Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua, Panama | Free |
| SADC EPA | Botswana, Eswatini, Lesotho, Mozambique, Namibia | Free |
| Eastern and Southern Africa States | Madagascar, Mauritius, Seychelles, Zimbabwe | Free |
| CPTPP | Brunei, Malaysia | Free |
| UK–Andorra agreement | Andorra | Free |
| UK–Albania agreement | Albania | Free |
| UK–Australia agreement | Australia | Free |
| UK–Canada agreement | Canada | Free |
| UK–Switzerland agreement | Switzerland | Free |
| UK–Côte d’Ivoire agreement | Côte d’Ivoire | Free |
| UK–Chile agreement | Chile | Free |
| UK–Cameroon agreement | Cameroon | Free |
| UK–Colombia agreement | Colombia | Free |
| UK–Ceuta & Melilla agreement | Ceuta & Melilla | Free |
| UK–Ecuador agreement | Ecuador | Free |
| UK–Egypt agreement | Egypt | Free |
| UK–Fiji agreement | Fiji | Free |
| UK–Faroe Islands agreement | Faroe Islands | Free |
| UK–Georgia agreement | Georgia | Free |
| UK–Ghana agreement | Ghana | Free |
| DCTS Standard | Indonesia | Free |
| UK–Israel agreement | Israel | Free |
| UK–India agreement | India | Free |
| UK–Iceland agreement | Iceland | Free |
| UK–Jordan agreement | Jordan | Free |
| UK–Japan agreement | Japan | Free |
| UK–Kenya agreement | Kenya | Free |
| UK–South Korea agreement | South Korea | Free |
| UK–Lebanon agreement | Lebanon | Free |
| UK–Liechtenstein agreement | Liechtenstein | Free |
| UK–Morocco agreement | Morocco | Free |
| UK–Moldova agreement | Moldova | Free |
| UK–North Macedonia agreement | North Macedonia | Free |
| UK–Mexico agreement | Mexico | Free |
| UK–Norway agreement | Norway | Free |
| UK–New Zealand agreement | New Zealand | Free |
| UK–Peru agreement | Peru | Free |
| UK–Papua New Guinea agreement | Papua New Guinea | Free |
| UK–Palestinian Territories agreement | Palestinian Territories | Free |
| UK–Serbia agreement | Serbia | Free |
| UK–Solomon Islands agreement | Solomon Islands | Free |
| UK–Singapore agreement | Singapore | Free |
| UK–San Marino agreement | San Marino | Free |
| UK–Tunisia agreement | Tunisia | Free |
| UK–Türkiye agreement | Türkiye | Free |
| UK–Ukraine agreement | Ukraine | Free |
| UK–Vietnam agreement | Vietnam | Free |
| UK–Samoa agreement | Samoa | Free |
| UK–Kosovo agreement | Kosovo | Free |
| UK–South Africa agreement | South Africa | Free |
UK: imports by month
Main suppliers, last 12 months
| Country | Value | Share | Change |
|---|---|---|---|
 Germany | £53.8m | 17.6% | +11.3% |
 China | £50.6m | 16.6% | +0.6% |
 Italy | £36.4m | 11.9% | +16.2% |
 United States | £22.7m | 7.4% | +5.9% |
 Netherlands | £21.5m | 7% | +6.4% |
 Denmark | £14.2m | 4.6% | +38.7% |
 Spain | £12.3m | 4% | +98.8% |
 Switzerland | £12.1m | 3.9% | -7% |
Same subheading in other tariffs
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 
Canada 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 World trade in 2024
Trade value (US$) no reported trade < US$320kUS$320k+US$19m+US$182m+> US$520m
Exports: 182
- China: US$2bn
- Germany: US$1bn
- United States: US$1bn
- South Korea: US$809m
- Italy: US$771m
- Canada: US$520m
- France: US$408m
- Spain: US$363m
- Mexico: US$345m
- India: US$321m
- Israel: US$290m
- United Kingdom: US$276m
- Japan: US$276m
- Netherlands: US$268m
- Türkiye: US$227m
- Brazil: US$208m
- Switzerland: US$199m
- Austria: US$182m
- Belgium: US$175m
- Taiwan: US$161m
- Hungary: US$153m
- Poland: US$138m
- Dominican Republic: US$123m
- Sweden: US$119m
- Singapore: US$113m
- Czechia: US$112m
- Malaysia: US$92m
- Denmark: US$83m
- Estonia: US$73m
- Australia: US$51m
- Greece: US$40m
- Thailand: US$38m
- Portugal: US$38m
- United Arab Emirates: US$37m
- Hong Kong SAR China: US$36m
- South Africa: US$36m
- Russia: US$34m
- Finland: US$34m
- Norway: US$31m
- Vietnam: US$26m
- Slovenia: US$26m
- Indonesia: US$24m
- Slovakia: US$22m
- Luxembourg: US$19m
- Lithuania: US$18m
- Latvia: US$16m
- Romania: US$13m
- Ireland: US$12m
- Bahrain: US$11m
- Saudi Arabia: US$10m
- Egypt: US$8m
- Ukraine: US$8m
- Croatia: US$8m
- Montenegro: US$8m
- Chile: US$7m
- Bulgaria: US$6m
- New Zealand: US$5m
- Kazakhstan: US$5m
- Serbia: US$4m
- Colombia: US$4m
Trade value (US$) no reported trade < US$8mUS$8m+US$40m+US$179m+> US$337m
Imports: 220
- United States: US$2bn
- Germany: US$569m
- France: US$439m
- China: US$383m
- United Kingdom: US$377m
- Canada: US$377m
- Malaysia: US$337m
- Mexico: US$314m
- South Korea: US$312m
- Singapore: US$288m
- Netherlands: US$260m
- Chile: US$259m
- Italy: US$251m
- Spain: US$246m
- Australia: US$231m
- United Arab Emirates: US$231m
- Indonesia: US$212m
- Belgium: US$210m
- Japan: US$198m
- Poland: US$189m
- India: US$187m
- Saudi Arabia: US$179m
- Vietnam: US$169m
- Morocco: US$167m
- Russia: US$160m
- Taiwan: US$157m
- Algeria: US$142m
- Switzerland: US$139m
- Türkiye: US$129m
- Brazil: US$125m
- Israel: US$123m
- Austria: US$114m
- Thailand: US$113m
- Norway: US$96m
- Egypt: US$95m
- Kazakhstan: US$92m
- Czechia: US$88m
- Sweden: US$86m
- Denmark: US$81m
- Romania: US$76m
- Qatar: US$69m
- Ireland: US$62m
- Iraq: US$62m
- Iran: US$62m
- Hungary: US$60m
- Portugal: US$60m
- Greece: US$57m
- Philippines: US$56m
- Hong Kong SAR China: US$54m
- Uzbekistan: US$52m
- South Africa: US$51m
- Ecuador: US$48m
- Bangladesh: US$47m
- Ukraine: US$41m
- New Zealand: US$40m
- Peru: US$38m
- Dominican Republic: US$36m
- Finland: US$35m
- Slovakia: US$34m
- Colombia: US$33m
Top exporters
| Rank | Country | Value | Share |
|---|---|---|---|
| 1 | China | US$2bn | 19.3% |
| 2 | Germany | US$1bn | 10.5% |
| 3 | United States | US$1bn | 9.7% |
| 4 |  South Korea | US$809m | 6.5% |
| 5 | Italy | US$771m | 6.2% |
| 6 | Canada | US$520m | 4.2% |
| 7 |  France | US$408m | 3.3% |
| 8 | Spain | US$363m | 2.9% |
| 9 | Mexico | US$345m | 2.8% |
| 10 |  India | US$321m | 2.6% |
Top importers
| Rank | Country | Value | Share |
|---|---|---|---|
| 1 | United States | US$2bn | 17.2% |
| 2 | Germany | US$569m | 4.6% |
| 3 | France | US$439m | 3.5% |
| 4 | China | US$383m | 3.1% |
| 5 | United Kingdom | US$377m | 3% |
| 6 | Canada | US$377m | 3% |
| 7 |  Malaysia | US$337m | 2.7% |
| 8 | Mexico | US$314m | 2.5% |
| 9 | South Korea | US$312m | 2.5% |
| 10 |  Singapore | US$288m | 2.3% |
Import duty on this product around the world 163
The most-favoured-nation (MFN) duty each country applies to goods of this HS subheading: the average over its national tariff lines, with the lowest and highest line where they differ. Goods from countries with a trade agreement often pay less.
- 5%median duty
- 59number of duty-free countries (MFN)
- 45%highest: Bahamas, Ethiopia, Cayman Islands
163
| Importing country | MFN duty | lines from – to | data year |
|---|---|---|---|
 Afghanistan | 2.5% | 2018 · HS 2012 | |
 Albania | 0% | 2023 | |
 Algeria | 5% | 2023 | |
 Angola | 0% | 2023 · HS 2017 | |
 Anguilla | 15% | 2021 · HS 2017 | |
 Antigua & Barbuda | 5% | 2021 · HS 2007 | |
| Argentina | 14% | 2023 · HS 2017 | |
 Armenia | 0% | 2023 | |
 Aruba | 12% | 2021 · HS 2012 | |
 Australia | 5% | 2023 | |
 Azerbaijan | 10% | 5% – 15% | 2023 · HS 2017 |
 Bahamas | 45% | 2022 | |
 Bahrain | 5% | 2023 | |
 Bangladesh | 9.1% | 1% – 25% | 2023 · HS 2017 |
 Barbados | 5% | 2022 · HS 2017 | |
 Belarus | 0% | 2021 · HS 2017 | |
 Belize | 5% | 2023 | |
 Benin | 5% | 2023 | |
 Bermuda | 0% | 2023 | |
 Bhutan | 10% | 2022 | |
 Bolivia | 10% | 5% – 15% | 2023 · HS 2017 |
 Bosnia & Herzegovina | 5% | 0% – 10% | 2022 |
 Botswana | 0% | 2023 | |
| Brazil | 14% | 2023 · HS 2017 | |
 Brunei | 0% | 2023 · HS 2017 | |
 Burkina Faso | 5% | 2023 | |
 Burundi | 0% | 2023 | |
 Cambodia | 7% | 2023 · HS 2017 | |
 Cameroon | 10% | 2023 | |
| Canada | 0% | 2023 | |
 Cape Verde | 0% | 2023 · HS 2017 | |
 Cayman Islands | 22% | 2021 · HS 2002 | |
 Central African Republic | 10% | 2023 | |
 Chad | 10% | 2023 | |
 Chile | 6% | 2023 · HS 2017 | |
| China | 5.4% | 5% – 7% | 2023 |
 Colombia | 7.5% | 5% – 10% | 2023 · HS 2017 |
 Comoros | 20% | 2021 · HS 2017 | |
 Congo - Brazzaville | 10% | 2023 | |
 Cook Islands | 0% | 2022 · HS 2017 | |
 Costa Rica | 0% | 2023 | |
 Côte d’Ivoire | 5% | 2023 · HS 2017 | |
 Cuba | 10% | 2023 · HS 2017 | |
 Dominica | 0% | 2023 · HS 2017 | |
 Dominican Republic | 0% | 2023 | |
 Ecuador | 6.7% | 0% – 20% | 2023 · HS 2017 |
 Egypt | 10% | 5% – 20% | 2019 · HS 2017 |
 El Salvador | 0% | 2022 | |
 Equatorial Guinea | 10% | 2023 | |
 Eswatini | 0% | 2023 | |
 Ethiopia | 30% | 2021 · HS 2017 | |
| European Union (27 countries) | 1.7% | 2023 | |
 Fiji | 0% | 2023 | |
 Gabon | 10% | 2023 | |
 Gambia | 5% | 2023 | |
 Georgia | 0% | 2022 · HS 2017 | |
 Ghana | 5% | 2023 | |
 Gibraltar | 12% | 2023 · HS 2017 | |
 Grenada | 5% | 2023 · HS 2012 | |
 Guatemala | 0% | 2023 | |
 Guinea | 5% | 2023 | |
 Guinea-Bissau | 5% | 2023 | |
 Guyana | 0% | 2023 · HS 2017 | |
 Haiti | 5% | 2020 · HS 2017 | |
 Honduras | 0% | 2023 | |
 Hong Kong SAR China | 0% | 2023 | |
 Iceland | 0% | 2023 | |
| India | 8.3% | 7.5% – 10% | 2023 |
 Indonesia | 5% | 2023 | |
 Iran | 15% | 10% – 20% | 2020 · HS 2017 |
 Israel | 3.3% | 0% – 10% | 2022 · HS 2017 |
 Jamaica | 0% | 2023 | |
| Japan | 0% | 2023 | |
 Jordan | 6.7% | 0% – 15% | 2023 |
 Kazakhstan | 0% | 2023 | |
 Kenya | 0% | 2023 | |
 Kuwait | 5% | 2023 | |
 Kyrgyzstan | 0% | 2021 · HS 2017 | |
 Laos | 5% | 2023 · HS 2017 | |
 Lebanon | 5% | 2020 · HS 2017 | |
 Lesotho | 0% | 2023 | |
 Liberia | 5% | 2023 | |
 Libya | 5% | 2021 · HS 2017 | |
 Liechtenstein | 0.6%* | 0.4% – 0.9% | 2021 · HS 2017 |
 Macao SAR China | 0% | 2023 | |
 Madagascar | 5% | 2023 | |
 Malawi | 5% | 0% – 10% | 2021 · HS 2017 |
| Malaysia | 0% | 2023 | |
 Maldives | 15% | 0% – 20% | 2023 |
 Mali | 5% | 2023 | |
 Mauritania | 5% | 2023 · HS 2017 | |
 Mauritius | 0% | 2023 | |
| Mexico | 1.3% | 0% – 5% | 2023 · HS 2017 |
 Micronesia | 4% | 2021 · HS 2017 | |
 Moldova | 10% | 2023 · HS 2017 | |
 Mongolia | 5% | 2023 | |
 Montserrat | 5% | 2023 · HS 2017 | |
 Morocco | 2.5% | 2023 | |
 Mozambique | 5% | 2023 | |
 Myanmar (Burma) | 5.3% | 3% – 7.5% | 2023 · HS 2017 |
 Namibia | 0% | 2023 | |
 Nauru | 10% | 2021 · HS 2017 | |
 Nepal | 5% | 2023 | |
| New Zealand | 5% | 2023 | |
 Nicaragua | 0% | 2023 | |
 Niger | 5% | 2023 | |
| Nigeria | 5% | 2023 | |
| North Macedonia | 0% | 2023 | |
| Norway | 0% | 2023 | |
 Oman | 5% | 2023 | |
 Pakistan | 16% | 2023 | |
 Palau | 3% | 2023 · HS 2012 | |
 Palestinian Territories | 3.3% | 0% – 10% | 2017 · HS 2017 |
 Panama | 0% | 2023 | |
 Papua New Guinea | 0% | 2023 | |
 Paraguay | 0% | 2023 · HS 2017 | |
| Peru | 0% | 2023 · HS 2017 | |
 Philippines | 5% | 2023 | |
 Qatar | 5% | 2023 | |
 Russia | 0% | 2021 · HS 2017 | |
 Rwanda | 0% | 2023 | |
 Samoa | 8% | 2020 · HS 2017 | |
 São Tomé & Príncipe | 10% | 2019 · HS 2017 | |
 Saudi Arabia | 5% | 2023 | |
 Senegal | 5% | 2023 | |
 Seychelles | 0% | 2023 | |
 Sierra Leone | 5% | 2023 | |
| Singapore | 0% | 2023 · HS 2017 | |
 Solomon Islands | 10% | 2023 · HS 2017 | |
 Somalia | 5% | 2023 · HS 2017 | |
 South Africa | 0% | 2023 | |
| South Korea | 6.8% | 3% – 8% | 2023 |
 Sri Lanka | 10% | 0% – 20% | 2023 |
 St Kitts & Nevis | 5% | 2023 | |
 St Lucia | 0% | 2023 · HS 2012 | |
 St Pierre & Miquelon | 0% | 2021 · HS 2017 | |
 St Vincent & the Grenadines | 5% | 2023 | |
 Sudan | 0% | 2021 · HS 2017 | |
 Suriname | 5% | 2023 · HS 2007 | |
| Switzerland | 0.6%* | 0.4% – 1% | 2023 |
 Syria | 7.5% | 5% – 10% | 2020 · HS 2012 |
 Tajikistan | 2.5% | 0% – 5% | 2021 · HS 2012 |
 Tanzania | 0% | 2023 | |
 Thailand | 2.5% | 0% – 5% | 2023 |
 Togo | 5% | 2023 | |
 Tonga | 3% | 2023 · HS 2017 | |
 Trinidad & Tobago | 0% | 2023 · HS 2012 | |
| Türkiye | 17% | 2023 | |
 Tuvalu | 0% | 2017 · HS 2017 | |
 Uganda | 0% | 2023 | |
 Ukraine | 0% | 2023 · HS 2017 | |
 United Arab Emirates | 5% | 2023 | |
| United Kingdom | 0% | 2023 | |
| United States | 0% | 2023 | |
 Uruguay | 0% | 2023 · HS 2017 | |
 Uzbekistan | 0% | 2021 · HS 2017 | |
 Vanuatu | 0% | 2023 | |
 Venezuela | 14% | 2023 · HS 2017 | |
 Vietnam | 5% | 2023 | |
 Wallis & Futuna | 10% | 2021 · HS 2012 | |
 Yemen | 5% | 2017 · HS 2017 | |
 Zambia | 15% | 2023 | |
 Zimbabwe | 0% | 2023 |
Tariff data years 2017–2023; rates may have changed since. * ad valorem equivalent of specific duties (UNCTAD estimate) · UNCTAD TRAINS, accessed via WITS (World Bank)
Classifications and correspondences
Where this HS subheading sits in the United Nations' statistical classifications, and which codes it had in earlier editions of the Harmonized System.
- SITC Rev. 4
- 74361 Machinery & apparatus for filtering/purifying water
- End use (BEC Rev. 5)
- Capital goods · BEC 112010
- CPC 2.1 product
- 43914 Filtering or purifying machinery and apparatus, for liquids or gases, except oil filters, petrol filters and air intake filters for internal combustion engines
- ISIC Rev. 4 activity
- 2819 Manufacture of other general-purpose machinery
Earlier HS editions
| HS | Code | |
|---|---|---|
| 2017 | 8421.21 | changed |
| 2012 | 8421.21 | changed |
| 2007 | 8421.21 | changed |
| 2002 | 8421.21 | changed |
| 1996 | 8421.21 | changed |
| 1992 | 8421.21, 9506.99 | changed |
Correspondence tables of the United Nations Statistics Division (UNSD)
Binding rulings for similar goods 57
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
- H345780 U.S. CBP
Application for Further Review of Protest No. 2704-23-168738; Classification of Sand and Cartridge Filter Systems from China
- N357946 U.S. CBP
The tariff classification and country of origin of a water filtration device
- 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
Recent rule changes mentioning this code
Acts whose text cites this code or its heading. Check the act itself: a code can be cited for reasons other than a change of its duty.
- Import and export controls
FR Doc. 2026-14542 · 91 FR 45516 · Source: federalregister.gov
- Tariff change
FR Doc. 2026-11158 · 91 FR 33854 · Source: federalregister.gov
The UK Global Tariff divides subheading 8421.21 into 2 tariff lines; the duty is duty-free.
Subheading 8421.21 is a single line in the EU Combined Nomenclature, where the duty is 1.7%.
174 countries pay no duty in the UK thanks to trade agreements and preference schemes such as DCTS Comprehensive and European Union, against a standard rate of Free.
In the UK, additional duty of 35% applies on top of the customs duty to goods from Belarus and Russia.
Imports of water filtering and purifying machinery into the UK came to £305.8m between September 2025 and August 2026 (up 3% on the year before); Germany supplied 18%, followed by China.
In 2024, countries exported water filtering and purifying machinery worth US$12bn (+3.8% year on year).
The largest exporter was China (US$2bn), followed by Germany.
Products classified here
Questions and answers
What is the HS code for for filtering or purifying water?
For filtering or purifying water fall under HS subheading 8421.21, part of heading 8421, in section XVI of the Harmonized System.
What is the import duty on for filtering or purifying water in the UK?
Under the UK Global Tariff, imports under 8421.21 from countries without a preferential agreement are free of duty. Preferential rates, anti-dumping duties and VAT are not included.
What is the import duty on for filtering or purifying water in the EU?
Under the EU Combined Nomenclature, imports under 8421.21 from countries without a preferential agreement are charged at 1.7%. Preferential rates, anti-dumping duties and VAT are not included.
Which country exports the most for filtering or purifying water?
China, with US$2bn in 2024 (19.3% of world exports).
Which countries can export water filtering and purifying machinery to the UK duty-free?
174 countries pay no duty under a trade agreement or preference scheme, among them partners under DCTS Comprehensive, European Union, DCTS Enhanced. The goods must meet the agreement’s rules of origin and the importer needs proof of origin; otherwise the standard rate of Free applies. Pick a country above to see its rate.
Is there anti-dumping duty on water filtering and purifying machinery?
The UK charges additional duty of 35% on goods from Belarus and Russia. Lower rates apply to the named exporters listed in the measure.
Where does the UK import water filtering and purifying machinery from?
In the 12 months to August 2026, the largest suppliers were Germany (18%), China (17%) and Italy (12%), out of total imports of £305.8m.
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.