Waterdrop X12 review: Fast tankless reverse osmosis filter with great taste, smart features and easy tap access

The Waterdrop X12 has an impressive 11‑stage filtration system that starts with a sediment pre‑filter, moves through a carbon filter, then the reverse‑osmosis membrane, and finishes with a re‑mineralisation stage that restores essential minerals, delivering water that is both pure and palatable.