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LADIS_LAmp DISinfection : Cap-Type drinking water UV sterilizer for preventing infectious diseases

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Nationality
Laos
Designer
Hwanjong Oh
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#SafeWater #UVTech #Health

About Project

LADIS, the world’s first cap-type UV water sterilizer, achieved remarkable results in just three months after being distributed to rural villages in Bokeo, Laos—reducing the incidence of waterborne diseases by 58%. Parents expressed relief that their children no longer suffer from diarrhea, and in the Philippines, a similar 67% reduction was recorded. These changes are more than statistics; they represent healthier lives, fewer hospital visits, and renewed hope for communities long deprived of safe water.

LADIS began with a simple mission: “safe water anytime, anywhere.” By replacing a PET bottle cap and pressing a button, the UV light activates for three minutes, eliminating 99.9% of bacteria such as E. coli. It requires no filters or chemicals and can be reused dozens of times after charging, combining affordability with sustainability. Simple, convenient, and practical user-centered design makes LADIS especially valuable in environments with poor sanitation, providing reassurance to families and patients alike.

Today, LADIS has expanded beyond Laos to post-war hospitals in Ukraine and rural communities in Uganda, Timor-Leste, and Nigeria, where its effectiveness in hygiene-critical medical settings has also been demonstrated. Now moving into developed markets as well, its mission remains clear: to bring safe drinking water to every corner of the world where waterborne risks persist. More than just a product, LADIS represents a solution for healthier, more sustainable living and coexistence.

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