In Minecraft, an unlimited water source is a water block that will never run out of water. This is useful for creating water features such as fountains, pools, and irrigation systems. There are two ways to create an unlimited water source: using a water bucket or using a dispenser with a water bucket.
To create an unlimited water source using a water bucket, simply place a water bucket on the ground. The water will flow out of the bucket and create a water source block. To create an unlimited water source using a dispenser, place a water bucket in the dispenser and then activate the dispenser. The water will flow out of the dispenser and create a water source block.