![Black spots and brown flakes in the bathroom sink when unused for more than a few days. : r/Whatisthis Black spots and brown flakes in the bathroom sink when unused for more than a few days. : r/Whatisthis](https://i.redd.it/6twhb8h6olu31.jpg)
Black spots and brown flakes in the bathroom sink when unused for more than a few days. : r/Whatisthis
![Kitchen sink has black discharge from piping. What is it? Is this a simple case of the normals, just reseal the threads? Or is it a sign of something worse. Front bowl Kitchen sink has black discharge from piping. What is it? Is this a simple case of the normals, just reseal the threads? Or is it a sign of something worse. Front bowl](https://i.redd.it/itpafm77w8w51.jpg)
Kitchen sink has black discharge from piping. What is it? Is this a simple case of the normals, just reseal the threads? Or is it a sign of something worse. Front bowl
![Homeowner is given grim warning about mysterious black grime in his sink (so, do YOU know what it is?) | Daily Mail Online Homeowner is given grim warning about mysterious black grime in his sink (so, do YOU know what it is?) | Daily Mail Online](https://i.dailymail.co.uk/1s/2023/08/18/07/74444623-12418219-Taking_to_Reddit_user_u_Swimmerguy211_shared_a_photo_of_the_porc-a-17_1692339596195.jpg)
Homeowner is given grim warning about mysterious black grime in his sink (so, do YOU know what it is?) | Daily Mail Online
![What is this gray/black stuff coming out of my bathroom faucet, I'm freaking out a little bit : r/whatisthisthing What is this gray/black stuff coming out of my bathroom faucet, I'm freaking out a little bit : r/whatisthisthing](https://i.redd.it/nxw6uci8ikl81.jpg)