The Water Supply System is an resource building located next to the river northwest of the starting game zone. It was added during an update on XX.XX.2014.[1] A 4th level was added during an update on 02.11.2014.[2]
A total of 40 assets are needed to complete construction of the Water Supply System. This is equivalent to 43 if one were to buy every asset instead of waiting to receive them from neighbors.