abluent
adj.adj. describing something that flows away or is washed away. It is an old word used to describe things like water or waste that move away from a place.
adj. flowing away or being washed away; moving away from a source. Often used in technical or historical contexts to describe drainage or waste disposal.
The abluent water flowed quickly down the hill.
The ancient city had a sophisticated system of abluent channels to carry waste away from the central market.
The architect designed the building with abluent pathways to ensure that rainwater and runoff did not accumulate on the stone steps during the rainy season.
From Latin abluēns, present active participle of abluō (“I wash off or away; cleanse, purify”), from ab (“from, away from”) + lavō (“I wash, cleanse”). See lave.