hot water in the cold water lines Home › Forums › Archives › Old Bulletin Board Archives › hot water in the cold water lines This topic has 0 replies, 1 voice, and was last updated 21 years, 8 months ago by jonesy4fun. Viewing 0 reply threads Author Posts 11 Feb 1999 at 8:14 am #280784 jonesy4fun I live in an apartment with a central water heater. Yesterday, hot water was coming finto the toilet tank. The line has a circulating pump. What is going on here? Please help. Author Posts Viewing 0 reply threads The forum ‘Old Bulletin Board Archives’ is closed to new topics and replies.