Other family members starting to react, and I haven't said anything to them so its not just in my mind.  I don't drink from the tap but from the fridge dispenser.  It's about a year old and I was just looking up how to clean the internal lines of that.  Tomorrow's project.   I kinda doubt that is it cause I used to have a similar system at my office.  When the landlord wouldn't flush that system the water would taste like mildew or mold.  But I'm up for cleaning it anyway since it has been a year.