Water piping system

  • Hello to all, I have a question about the new water pump and piping system that up on test update right now.
    My question is, what machines/crafting tables actually use water and output polluted water if there is any?
    On some machinery, like Blast Furnace, there is an output for piping implemented on it but when I connected it nothing happens. The water pump on its own works great, pumps out clean water but for what purpose other then transporting water to another place...?
    Any insight would be helpful, thank you.