@ConnorFromDBH@Conckreet the sewage from the Cuprium refinement, usually from Hetonite production is used for the Xircon production although only half of it are being used in which the dev think the other half is the one that goes to that big recycling station (forgot the name).
@ConnorFromDBH@Conckreet they're using the "inert xircon effluent" from the xircon production and then recycle it into usable "xircon effluent" required for 1 heavy xiranite production.