Instruct: Classify Amazon reviews into positive or negative sentiment
Query: not enough to filter out limescale

If you live in a city with very hard water, this won't be enough to filter out the lime.To test calcium carbonate filtering ability, pour a little of this everpure water into a pot, and let it evaporate over the stove.You will see white deposits left on your pot.Bottom line- this is not a good substitute for commercial quality water vending machines. At 25 cents a bottle, vending machines are still cheaper, and cleaner.