Reverse Osmosis Water Purification Unit (a.k.a ROWPU)

A machine that extracts water from an unclean/contaminated source and treats it by reverse osmosis, pumping out clean/potable water.

ROWPUs are typically large, requiring motor vehicles to transport them.
Many ROWPUs also treat chemically, chlorinate and filter the water. NBC filters can also be added to filter Nuclear, Biological and Chemical agents.