Bucket

Bucket is a tool used for gathering water.

Use

 * 1) Left-click on a block with water; and
 * 2) Wait for the dwarfs to complete the task.

If there is a removable/diggable background on the block, or if the block is part of a pond with fishes, more than one option will popup:
 * 1) Left-click on a block with water;
 * 2) Click "Gather Water"; and
 * 3) Wait for the dwarfs to complete the task.

The "Gather Water" option requires at least one bucket available in the stock.

Dwarfs do not need to search for buckets at the stock, neither to be equipped with them through the equip menu, to gather water; they do it automatically, like with other tools.

After the buckets have been crafted at the workbench and carried to the stockpile, they become available for dwarfs to gather water.

Gathering process
The gathering process consists in two steps:
 * 1) Bagging water; and
 * 2) Carring the water bags to a stockpile.

Both steps require at least one bucket available in the stock, but only the 2nd step reduces the number of buckets available.

I.e., with only one bucket in the stock, you can order many dwarfs to bag water; and once the order is given, many dwarfs can do this at the same time. But if one dwarf take one bag of water to carry it to the stock, he will use the only bucket available, and all other dwarfs will stop bagging, waiting for the bucket to arrive at the stock and be available again, so they can continue with the bagging task. The more buckets are available, the more water can be carried by dwarfs at the same time.