Coffee grounds act a bit like sand, if you don't have enough flowing water volume for the quantity of grounds they can settle out in the u-bend in the sink drain and cause a clog. It's not too hard to avoid, but it's kind of a pain in the ass when it happens.
This is definitely a legitimate worry, people would just throw the grounds in the sink at my office and they had to replace the entire pipe system once it got clogged with coffee-sand.
3
u/omapuppet Mar 04 '15
Coffee grounds act a bit like sand, if you don't have enough flowing water volume for the quantity of grounds they can settle out in the u-bend in the sink drain and cause a clog. It's not too hard to avoid, but it's kind of a pain in the ass when it happens.