1H2O3: a Swiss company that designed and commercializes disruptive onsite alternatives to centralized water treatment plants. Our modular, simple and affordable plug and play water treatment plants for small & mid-size customers are using efficient water treatment technologies complying with increasingly complex regulations and allowing - farmers and producers, through aquaponics, to grow food locally in a sustainable way, with higher productivity. - municipalities to meet their discharge standards at a lower cost and footprint