Where do I find the Decrepit Sewers Key Guardian?

I don't know where to find Decrepit Sewers Key Guardian, just some general location to look would be helpful.
Also I'm only level 16 so specifically areas that are friendly to my level.

 

Decrepit Sewers Key Guardians can appear in multiple locations, including the Emerald Trail, Coastal Trail, Nivla Woods, and near the Decrepit Sewers itself. They spawn less frequently compared to other mobs.

(I copied this straight from the wiki)

 

If you are trying to get a decrepit sewers key, you are better off either doing low-level world events (which almost always drop the key) or just buying one off the trade market. Key guardians spawn pretty rarely.

 

crazy that the mob i encountered most back when i first started playing the game now warrants a "Where do I find it?" thread.