I have had a couple of these and they are really good at filtering the water and getting a great taste, taking out the rest of the impurities such as floride and theat metal taste. We use it for just drinking water or for putting into the kettle and it is very good. 
There is one drawback the water gauge for showing the number of litres and when to change the cartridge does not last that long and on the last 2 jugs has stopped working after a couple of months, which is a little disapping, hence only 4 stars.