mimizuke t1_j5ntbxa wrote

It started with rain water being no longer safe to consume anywhere in the world. Soon after we have poisoned every last water source. Everyone eventually tries to drink the poisoned water, or distills it - and dies fast. People in regions with no available water have already died, and there are just few cities left having enough drinkable water to survive a week. When it’s gone there will be a countdown: 3 days before everyone dies of dehydration.