u/Atwarwithme3

There is some black sludge coming out of our faucets (kitchen and bathroom sink and shower). It’s now growing from the sink drain like a creature trying to escape. It appears on the walls of the shower even after bleach cleaning and we’re constantly replacing the shower curtain. This is what my bamboo scrub brush looks like after one use. I live in an apartment and asked the maintenance to see if it was mold - maybe in the pipes or something? Their solution was to change the shower head… not addressing the sinks at all. Is this mold? Something else? Where is it coming from? We clean it off and it grows back within a week.