Building a house faces east, can toilets and sewers face west?

Purple gas has come from the east since ancient times! The gate faces east or is located in the southeast corner of the courtyard facing south. Good!

In feng shui, the east is wood, the west is gold, the south is fire, and the north is water! Toilet water belongs to filth and is suspected of filth! It is recommended to face south, and the fire will burn up the filth!

Personal opinion, for reference only!