MISHONGNOVI — At the end of a dusty road, beside two water tanks in the desert shrubs, a windmill spins in the breeze.
From a spigot, water flows through a blue hose and gushes into a bucket.
When the water reaches the brim, Kayla Johnson heaves the bucket into the back of her family’s car. Her younger brother, Terron, holds the hose and keeps the stream running into a 5-gallon jug...