PSA: Our shop's slow drain turned out to be a degreaser problem
Last week, the sink in my bike shop started backing up. A plumber had to snake out a thick, nasty plug of grease and old cleaner. He asked if we rinse bike degreaser down there, and we always had. I did some reading, and it turns out that stuff really messes up the local water treatment. Now we pour all our dirty degreaser into a sealed tub and haul it to the proper drop-off. It's an extra chore, but it keeps things cleaner in the long run. The plumber's bill was a quiet reminder to pay attention. If you're still washing chemicals down the drain, maybe stop before your sink does.