Tariff reference › Chapter 84 › 8421.21.00.00
HTS 8421.21.00.00 — For filtering or purifying water
The current US import duty for For filtering or purifying water (HTS 8421.21.00.00) — the base rate, any Section 301/232/122 surcharge that applies, and what's changed recently.
Centrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus, for liquids or gases; parts thereof: › Filtering or purifying machinery and apparatus for liquids: › For filtering or purifying water
Current US duty rate
| Column 1 (General / MFN) | Free |
|---|---|
| Special (FTA programs) | — |
| Column 2 (other) | 35% |
Additional duties may apply, depending on country of origin: Section 301 (China) — List 1 — 9903.88.01 (+25%); Section 301 (China) — four-year-review strategic sectors — 9903.88.69.
Alert me when this code changes (free) See all recorded changes
Programmatic access: the full duty stack (base + surcharges + MPF/HMF for a given origin & value) is at /duty?code=8421.21.00.00&origin=&value=. Current as of USITC 2026HTSRev10 (synced 2026-06-12).