This is strictly speaking only when the water leaves the waterworks. After that it comes into contact with pipes of various Materiailen, not always new and especially not always completely inert. Connected to the unavoidable lime deposits there are just a few visually sediments along with metal debris. It makes sense to filter out these things before they cause in capillary tubes blockages and corrosion, as in aerators, coffee makers, kettles, water heaters etc. drama is however not appropriate. For fun I have the new filter weighed up to a tenth of a gram. After one year, the increase in weight of the dried filter was less than 1.5 grams with the deposits. At the same time, however, 150 cubic meters of water have passed through. These are 150 million g, that is you talk about a factor of 1: 100 000 000 (in words: one hundred million to).
One thing is clear, a gustatory treat the water you can not expect from the filters.
When with me the morning draining of standing in line at night to water taste treatment would no longer be sufficient, one would have to destruction by ionization of organic traces and subsequent carbon filtration of the reaction products into consideration. However, In order to operate such plants is the pre-filtering by the filter Grünbeck a necessary condition.
But this makes sense only for a portion of the water, namely for those who used to drink and food preparation. Finally, there is no reason, the amount of water that can be used for garden irrigation, the flow through a shower, bath, toilet or taste to recycle.
Not always seals and Kunstoffhülsen are broken and so is the lower-priced package only with the filters definitely worth a buy recommendation.