Healthy Cities

Change:Water Labs—iThrone

Safer, cost-effective sanitation for informal urban communities

Team Lead

Diana Yousef

Solution Pitch

The Problem

Globally, 1 billion people lack access to safe, clean toilets because their homes have no sewage plumbing. Instead, they must use shared facilities—exposing them to disease, violence, and sexual assault—or defecate openly. Such poor sanitation perpetuates poor health, poverty, and pollution, even in wealthy countries like the United States.

The Solution

Change:Water Labs’ iThrone Evaporative Toilet brings an inexpensive, sanitary toilet into slums, transitional housing, and other under-resourced informal homes. The compact, waterless toilet can be installed anywhere, regardless of infrastructure. 

A low-cost evaporative membrane dehydrates human waste—extracting and reclaiming more than 90 percent of it as pure water—using pouches that need emptying just once a month. Its bio-battery converts urine into electricity that powers ventilation, dispelling gasses and odors. The device requires little maintenance, which keeps costs low, and provides consumers with immediate access to a clean, safe, and private toilet.

Solver Team

Organization Type:
For Profit

Cambridge, MA, USA


Working in:


Solution Team:

to Top