I bought a new frig in March (2018). The water tasted bad. I thought I might as well change the filter (ie people change the oil in new cars). I read the manual to find how to do it and discovered the frig (LG lmxs*******s - btw, I love it so much) did not have one in it! (That's what I get. Purchased from best buy - but I got it for 1/2 off due to a bearly noticeable dent on the side.) So I found HOF. The water is much much better. We can drink it. Thank you!