I bought it for Heraklion, Crete, where the water is not drinkable. With a measurement I made on tap water using a TDS meter, it showed 540 ppm, and in this pitcher 420! Around 20% filtration, meaning that bottled water is around 120-140. So it is not a good solution except for coffee and cooking. Its filters are more or less the same as all the other pitchers in its category, around 4.5-5.5 euros each for one month. So, it doesn't work, as the manufacturer claims, for water that is not already drinkable. I think the same applies to other pitchers in its category.