Debra, your question regarding your ice and water
dispenser reminded me of an episode that concerned a
mucked up sauna-tub. What Aggie ended up doing was use a few dishwasher tabs (like electrosol, here in the US) dissolved in a bucket. She had them soak into the tub (and ran the lines) for a good while and it kicked up all sorts of filth (ew!) --so maybe try one tablet and rub it through the
dispenser a few times. You could also try adding some jet dry OR run the last couple of times with white vinegar. Hope this helps. :)