A water district is like a big group of people who work together to make sure everyone gets clean water for drinking, washing, and all the things we need water for. Just like how we have grown-ups who take care of us, there are adults who take care of the water so we can all be healthy and safe.
Sometimes, people live in places where they can't get water easily, or the water is dirty and not safe to drink. That's where the water district comes in. They find ways to get clean water to those people and make sure it stays clean. They might build big pipes to bring water from far away, or set up special machines to clean up the water so it's safe to drink.
Water districts also make rules for how we can use the water. For example, they might say we can't waste water by leaving the faucet on too long when we brush our teeth. They might also charge us money for using the water, which helps pay for all the work they do to make sure we have clean water.
So, to sum it up, a water district is a group of adults who work together to make sure we all have clean, safe water to drink and use for everything we need. They find ways to get water to places that don't have it easily, clean up dirty water, and make rules for how we use the water so we don't waste it.