Black strands of gunk hanging off my faucets and shower head
I live in a town home complex built in 1958. I first notice black stuff hanging out of upstairs bathroom sink faucet about 6 years ago. Ace hardware told me to replace black washer, but it was fine and every few months accumulating more black gunk that I'd wipe off with my finger or a Kleenex. Remodeled my kitchen 2 1/2 years ago and bathroom 1 1/2 ago with high end faucets and some new pvc pipe added to kitchen, when turning off cold water flow to house before kitchen remodel, contractor asked if I had water leaking from water pipes in basement that lead to upstairs bathrooms. Yes, I did, and some plumber had fixed. He said they put in a piece of gas piping connecting two water pipes. He replaced and found ton of rusty sludge inside black pipe. He said this might solve the mysterious black gunk problem. No, it now came out of shower head upstairs, new faucets in powder room and kitchen. I had a Walter filtration system hooked up under kitchen sink with my remodeling. And one in my new fridge. Only drink water out of those two. Two months ago he changed my filter system filters, and saw no black stuff in filters. Today I put my finger under opening of sprocket for filtered water and scooped more of the black gunk coming out of there also. Looking online someone suggested hot water tank could be causing from sediment buildup or corrosion of inside or stick. Had that replaced in early spring this year. Recently bought new washer and dryer in May, and now a whole lot of black gunk coming into lint catcher attached to washing machine hose that empties to utility sink. I am stumped and so is contractor. He thinks it may be something wrong with city water lines. Checked with one neighbor in town home building next to ours and they have no problem but gal in another building across our building at the opposite end of mine who has had problem for four months. Can anyone tell me what this stuff is? Or where it is coming from? When it dries it looks like dried shriveled plastic. When I dropped it in a glass of hot bleach, it does not disintegrate, it turns white. HELP!!!