A complex web of treaties and business arrangements govern the rights and usage of Africa's water supplies. But with droughts, pollution and population growth putting pressure on water supplies, conflict is arising over this vital resource.

A complex web of treaties and business arrangements govern the rights and usage of Africa's water supplies. But with droughts, pollution and population growth putting pressure on water supplies, conflict is arising over this vital resource.

A complex web of treaties and business arrangements govern the rights and usage of Africa's water supplies. But with droughts, pollution and population growth putting pressure on water supplies, conflict is arising over this vital resource.

A complex web of treaties and business arrangements govern the rights and usage of Africa's water supplies. But with droughts, pollution and population growth putting pressure on water supplies, conflict is arising over this vital resource.