Known as drain fly larvae, the black creatures are a warning sign of a build up of waste in the toilet drain - as they feed off the hair and sludge that coats the underground pipes. Completely ...

When Porfily lifted the lid of a toilet tank, he found a layer of thick black sludge. He’s lived in the house for 26 years and has never seen anything like this. His neighbors also grappled with ...

But emails show residents complaining for years of "indoor plumbing clogged with thick black sludge, like motor oil," "kitchen sinks and toilet tanks coated with thick black tar that will not come ...

Imagine that sometimes when you turn on your faucet, a nice stream of black sludge comes out ... It comes from her tap and fills up her toilet bowl, and she says this isn't even the first time ...