How does humanity use fresh water supplies?

First of all, humanity needs fresh water for thirst quenching and cooking. Also, a person uses fresh water for hygienic purposes – showering, taking a bath or simply brushing his teeth. We need water for cleaning. No one washes the dishes and the floor, or does not wash clothes with salt water. Her gardeners water the beds, firefighters put out the fire. All water sports are related to fresh water. But fresh water makes up only three percent of all water on planet Earth. And naturally, it is not endless.