Pipes
Water and all other liquids can be distributed through the pipes.
The distribution itself doesn't require a power source. It works because of water pressure and water level height.
Pumps can pump the water up to a certain height in case you build them through terrain with different heights.
There's a plenty of different shapes of pipes allowing you to create the network through any terrain.
You can even put the pipes underground and build objects on top of them.
The pipe with a valve allows you to control the flow of liquids through the pipe by closing and opening it.