The byproducts of waste water, water, and oxygen produced by this system can be piped into tanks for storage if desired, but the system itself can be entirely self-sufficient. Only compost must be retrieved by crew members.
Sewage is extracted from the Habitation Deck via a sewage pipe. The pipe must be installed in a square directly beneath the Habitation Deck. The pipe is then connected to a Waste Treatment Machine, which is connected to a Water Purifier.
Purified water can be piped into an Oxygen Maker to generate oxygen and then into an Airduct to produce a breathable atmosphere.