We had a hot water tank installed in our home. Since then we have not had potable drinking water for over three months. The plumber came out and replaced the inner tank rod but the water quality did not improve. This plumber has been a no show for 7 times - all documented. Our well water system has been flushed, filters replaced, florescent bulb replaced, all at our own expense at his request. The plumber's excuses include his truck was taken by his son to my knees hurt... hes a no show