Offshore pump
Template:Machinery The offshore pump is the only source of water. It is commonly used to provide steam to steam engines for power generation. The offshore pump itself requires no power to operate. (This is because, otherwise the game might fall into a serious deadlock: No coal, no electricity, no water...)
You need 2 (or better 3) offshore-pumps to feed one pipe to the maximum throughput (for example if you have 10 Steam engines working at 100%).