I purchased a Kenmore refrigerator 1 year ago. Both the water and ice have a plastic taste. I have replaced the filter (running at least 2-3 gallons out of the dispenser after changing it) at least 3 times in the past 8 months. It seems to taste fine for a few hours after changing the filter, then the plastic taste is back. My faucet water does not have this taste, so I know it has something to do with the refrigerator. I called Sears and they sent a technician who replaced 4 parts and said if that didn't fix the problem, there really was nothing else he could replace that could be causing the problem. After he replaced the parts and we again ran a couple gallons of water, it tasted fine. By the next morning the plastic taste was back - both ice and water.
I have called Sears again and they are sending the same technician back. Now it's up to him to see if he can taste the plastic taste in the water. If he can't, they're telling me I'm pretty much out of luck. If he can, he can call his manager and the manager has the authority to do something about the situation - even if that involves replacing the refrigerator.
I brought some of the water to work and had 6 people taste it. 4 out of the 6 noticed a definite bad after taste, though they didn't really pinpoint it to plastic. I guess if the service tech can't taste it I will have purchased a refrigerator with water and ice dispenser that I can't use. I can't stand the taste of the water and the ice ruins the taste of anything I put it in.
Any suggestions as to what else may be causing this? It uses a PUR filter.