Product review (5 stars): Finally water tastes like bottled water!
We have a new LG that uses the LT800P.  As with all the complaints I have read about the water tasting like plastic, ours tasted the same way.  We have had this refrigerator for 6 months and never had good tasting water, or ice from it..  I removed the filter for a week and still the water and ice tasted like plastic.  There have been gallons and gallons of water that has been run through the lines so it wasn't a matter of "time" to fix the problem.  The water from our sink faucet tastes great, so it is definitely the water lines that are causing the problem and the LG water filter does not remove that particular chemical.  I just bought a Waterdrop filter, installed it and the plastic taste is completely gone!  The price difference between Waterdrop and the original LG filters  is astounding! I highly recommend Waterdrop filters!