Granger
New Member
Our house in on the town sewer and water. After about 5-6 hours or so of not using the cold water taps in our upstairs master bathroom, when we first open the taps they smell of rotten eggs. Both his and hers taps. This also happens in our upstairs guest casita. I’ve tried pouring boiling water and vinegar down the pipes. I can’t figure out why the cold water taps have this smell. The drains drain very well and I’ve cleaned out both p traps. We do have a hot water recirculating system and sometimes the cold water comes out a little warm for some reason. Also all of the downstairs bathrooms do not have this problem so gas is somehow building up and rising into the upstairs plumbing.
Any ideas?
Any ideas?