A man was left baffled when he returned home to find his sink full of black grime – and plumbing enthusiasts online have warned it could be ‘raw sewage’.
Take from Reddituser u/Swimmerguy211 shared a photo of the porcelain basin covered in a disgusting substance, in the shape of a circle around the drain.
The horrified poster, believed to be from the United States, said he lived alone and was shocked to be back in the mud.
“I came back to my sink today and it looks like this,” he wrote in a call for responses. “Any ideas what could be causing this?” »
However, that doesn’t seem like good news, as thousands of people have weighed in on the matter.
Taking to Reddit, user u/Swimmerguy211 shared a photo of the porcelain basin covered in a disgusting substance, in the shape of a circle around the drain

The horrified poster, believed to be from the US, said he lived alone and was shocked to be back in the mud
“If you haven’t left the sink full of dirty water, the sewer has backed up. This is raw sewage,” one replied.
“Man you’re not gonna like this but your sewer backed up,” added another.
“You probably have that in your shower too. It happened to me once in an apartment.
“It’s nasty gunk from inside your pipes and maybe literal raw sewage mixed in.
“It’s not even something you can fix either…the city has to fix that. It’s probably happened to your neighbors too.
However, many have suggested that the problem is manageable.
“It could also be gunk stuck in the pipes and gas building up in the sewer,” read one response.
“It happens to my sink sometimes. It’s because the plumbing is crap and it’s clogged with, what my plumber calls, grease deposits.








The horrified poster – believed to be from the US – said he lived alone and was shocked to come back in the mud
‘Make-up or hair products or shaving foam, etc. It’s boring. He literally burps and smells the fart.
“I pour white vinegar over it every few weeks, but once a year or so it starts again and we have to take the pipes out from under the sink and snake it.”
Another also supported using vinegar as a solution, but warned to watch for signs of a deeper problem.
“Vinegar is known to be helpful, but if you keep toeing the line every year in addition to treating it every few weeks, you have a bigger underlying problem,” they said.
‘Generally, I would start looking into whether your pipe is undersized, mistipped, abused, or a combination of various factors, and I would start fixing that problem.
“Also, I would recommend using a chemical treatment that is significantly better than vinegar and not harmful to your pipes long term like drano or liquid plumber etc.”