This year’s campaign is based on the following narrative: “When nature calls, we need a toilet. But, billions of people don’t have one. This means human faeces, on a massive scale, are not being captured or treated – contaminating the water and soil that sustain human life. We are turning our environment into an open sewer. We must build toilets and sanitation systems that work in harmony with ecosystems.”
Nature-based sanitation solutions (NBS) harness the power of ecosystems to help treat human waste before it returns to the environment. Most NBS essentially involve the protection and management of vegetation, soils and/or wetlands, including rivers and lakes.