Loowatt Ltd., a 2013 Phase II winner and grant recipient of The Bill and & Melinda Gates Foundation Grand Challenges Explorations, continues to supply waterless flush toilets and sanitation solutions for glabal markets. (Image courtesy Loowatt Ltd.)

Loowatt Ltd., a 2013 Phase II winner and grant recipient of The Bill and & Melinda Gates Foundation Grand Challenges Explorations, continues to supply waterless flush toilets and sanitation solutions for glabal markets. (Image courtesy Loowatt Ltd.)

Loowatt Ltd., a 2013 Phase II winner and grant recipient of The Bill and & Melinda Gates Foundation Grand Challenges Explorations, continues to supply waterless flush toilets and sanitation solutions for glabal markets. (Image courtesy Loowatt Ltd.)