Help
DP accidentally put nail in pipe whilst putting a nail into floorboards.... Turned out the pipe was dead end pipe with stagnant greeny water not going anywhere... The pipe end was hanging out hole in breakfast room hole in breakfast room ceiling at corner of room. Plumber cover pipe bit that remained with plastic bung that he said would take high level pressure but he did expect there would be any.
The breakfast room was the old kitchen and I suspect the pipe may have gone to old sink that was removed and now kitchen is housed in new extension.
The concerning thing is that when I switched back on water for house water from toilet tank came through kitchen tap for 1 minute! I know because I put these tablets in the water that smell nice and froth up. It was only after switching water back on I've never noticed it before ( I would know as I always put these things in) and it has stopped. It's a mixer tap and happened when I turned hot part.
Sorry for long post again but any ideas?!