Beyond Bhara Kahu, the plains give way to green slopes, rain-fed channels, roadside springs and water tumbling down rocky hillsides. A few still contain urine or faecal matter. Dr Suleman told APP that faecal matter should never be washed or disposed of in natural water channels, particularly where the water flows towards settlements or is accessible to others. But putting human faecal waste in or beside flowing water creates an entirely unnecessary contamination risk. Discarded diapers make the problem particularly troubling, as they can contain human faecal matter and other contaminants that may enter streams and natural water channels.