The Water tower works like the water barrels in the system, except it consumes water barrels placed around it and can hold up to 100 barrels of water. The water barrels should be within 5 meters of the tower. While the tower must be filled, it is a huge benefit for the busy farmer.
To use the water tower, just rezz it near your fields, trees, animals. It will also fill and keep the trough full automatically.