A home that recycles its own water: Antigua households regenerate 97% of what they use

On a dry island, every shower is borrowed water. Japanese company WOTA — an Earthshot Prize finalist — has been testing a different arrangement in Antigua and Barbuda: a suitcase-sized unit in the home that cleans wastewater from kitchens, bathrooms and laundry and returns up to 97% of it for everyday reuse. In one demonstration household, the unit regenerated 1,720 of the 2,356 gallons the family used in a month — the equivalent of 100 showers — cutting their need for fresh water by 73%. WOTA, working with UNIDO and the Government of Antigua and Barbuda, is now leading a 'Water 2040' initiative to make household water regeneration ordinary across water-scarce islands.

SDG 6 · Clean water and sanitation — Mechanism: tech innovation