|Gathering Location||Hart Outpost, Trombe Plateau, Endless Corridor, Luminous Cave|
|Monster Drop||Black Demon|
|Buy From||Astrid's Shop|
- "Oops, sorry! This happens sometimes. It's such a pain finding a way to get rid of it. It's too toxic; I can't just toss it out. Maybe as an ingredient...?"
- — Atelier Meruru description
Pollutant is a material in Atelier Meruru: The Apprentice of Arland.
It is one of few item options available in the "poison" category while synthesizing. It can be found mostly in the Luminous Cave near Trombe Plateau. It can also be purchased from Astrid's shop in Arls.