"I've rowed on some pretty interesting rivers and lakes in my time. Sometimes, when my water bottle was empty, I've been tempted to take a drink from outside the boat - but I knew it would be far too dangerous."

"I can't imagine what it's like to have no choice but to drink whatever water is available, and to have to feed that to your children knowing it could kill them. It is unjust that people are living like this."

"If we in the UK wouldn't drink that water, then no one should. Everyone has the right to water and governments must do more to make clean, safe water in the developing world a global priority."