Oxygen and resource loops
Lavatory Water-Positive Loop
A Lavatory and Water Sieve can return more water than the bathroom consumes, while requiring germ-aware handling.
WHERE & HOW TO FARM
Lavatory Water-Positive Loop
Build a bathroom with Lavatories, pipe their Polluted Water output to a Water Sieve, and send the clean output to a controlled reservoir or bathroom supply line. Keep germ monitoring on the route.
Before you go
- Lavatory connected to clean-water input and Polluted Water output pipes.
- Water Sieve and filtration medium.
- Separate clean and polluted liquid routing.
- Germ monitoring and a plan for contaminated water.
Farming steps
- Place the Lavatory and connect its input to the bathroom’s clean-water supply.
- Pipe Lavatory Polluted Water to a dedicated polluted-water line rather than mixing it with clean supply.
- Connect the polluted line to a Water Sieve and provide the required filtration medium.
- Route the sieve’s clean output to a separate reservoir where its germ level can be checked.
- Use the loop’s water balance to supply the bathroom or another appropriate destination while accounting for the 6.7 kg per-use surplus.
- Monitor germ levels; do not treat sieving alone as sterilization.
- Manage overflow deliberately, sending excess to a compatible crop or another planned sink.
- The positive water balance does not remove the need for germ controls; keep the clean output’s intended use in mind.
- A Thimble Reed farm is one possible Polluted Water sink when fiber is useful and the crop can accept the flow.
Repeat, collect and use
This is a repeatable bathroom loop while duplicants use the Lavatory and the Sieve has filtration medium and capacity. Collect the clean-water surplus and route overflow deliberately; the excess is limited by actual bathroom use.
Common mistakes
- Returning bathroom water without checking germs; monitor contamination and provide a suitable treatment step for sensitive uses.
- Mixing polluted output with clean input before sieving; maintain separate lines and reservoirs.
- Letting overflow back up; plan a compatible crop or storage destination for the surplus.
When to stop or switch
Stop expanding the bathroom loop when its clean-water output exceeds useful storage and overflow capacity. Add a sink or reduce the loop’s connection to other systems before pipes back up.
Sources & fact checks
What you can get here
Open a guide to find other locations and see what the item is used for.