I'm imagining that I've found something completely safe to colour the water with. In every large city in the world, agents add food colouring the the water supply. Everywhere the water pipes run in that city, the water has turned green. The dye breaks down harmlessly over the course of the day. Paler green, and paler, then it's gone.
Meanwhile, air force aeroplane crews from all nations are collaborating on a secret mission - the green water drop. There are still one or two areas where water security is a distant dream, even though the network has been organizing around this objective for a decade now. It's time to break out some hope for those whose lives are a daily grind just to get fresh water to drink.
In rural areas without safe water, where to get water even to drink is a daily struggle, in a growing refugee camp, in an area recently struck with natural disaster, something new is happening. Thousands of bright green parachutes drop from the sky. The parachute material can be used to make condensation stills
and the parachute load is a canister of fresh drinking water, fitted with an ergonomic carrying harness.
It's not a solution to the water crisis where they are, but it could mean a day's rest from hauling water. Happy water day, women of the world. Here's to having the opportunity to put your feet up and enjoy a glass of fresh water you didn't have to lug for miles.