Los Angeles has hard water

A water softener and its disadvantages

Water softening system Disadvantage # 4: Chloride in the wastewater of a water softening system damages the environment

Water softening systems not only have technical disadvantages, but also disadvantages for the environment. By using ion exchangers, high amounts of sodium and chloride get into the wastewater. This can significantly increase chloride pollution in a supply area (5). Due to the water solubility of chlorine, the amount of chlorine cannot be removed by municipal sewage treatment plants (6). The consequence would be a steady increase in chlorine pollution in water.

In response to a question from MP Hendrik Lange about chlorine pollution in German waters, the state government of Saxony-Anhalt replied the following in 2016: “If there are deviations, sensitive species fall out, robust species spread out. The entire species and abundance structure of a community can change as a result (7). For this reason there are z. In California, for example, there is already a law (Senate Bill 475) (8) that allows local authorities to ban the use of certain ion exchangers for private purposes (9).


Water softening system Disadvantage # 5: Increased water consumption due to regeneration processes

Another disadvantage of a descaling system with salt (ion exchanger) arises from the additional water consumption for regeneration processes. A water softener can only soften a certain amount of drinking water depending on its size. If this amount is reached, it has to be regenerated. This means that the ion exchange resin is rinsed with water at certain intervals and “loaded” with new sodium chloride solution. Many liters of water are required for this process. For a single-family house with three to four people, which is located in a region with hard water, this can in some cases mean an additional annual water consumption of up to several thousand liters of water.


Water softening system Disadvantage # 6: soft water, but no lime-free water!

Softening systems or decalcifying systems with salt are often referred to as soft water systems. These systems deliver soft water, but not completely "lime-free" water. For the reasons of the risk of corrosion mentioned above, the softened water is always blended with untreated water. Often water softening systems based on ion exchange leave a residual water hardness of 4 ° dH - 8 ° dH in the water. A household definitely reduces limescale deposits due to the lower degree of hardness. However, it would be wrong to expect that you will never again find “limescale stains”, i.e. deposits, on a surface such as fittings or a glass shower. A water softening or decalcification of the water to a water hardness of 0 ° dH is not usual.


Water softening system Disadvantage # 7: a water softening system does not only incur acquisition costs

The costs of a water softening system are not only incurred when purchasing and installing it. To operate an ion exchanger, salt must be purchased and topped up on a regular basis. Another cost item that should not be neglected is the maintenance of a water softener. DIN EN 806-5 recommends maintenance every six months. Of these, this maintenance should be carried out by a specialist company at least once a year. Many manufacturers offer special maintenance contracts for this.


The alternative: How about an innovative limescale protection system instead of a softening system with salt?

The use of a water softener has several disadvantages. In particular, the effects on drinking water quality and the environment should not be neglected. As an alternative to a water softening system with salt, there have been so-called limescale protection systems for several years. The significant advantage of a limescale protection system is that the minerals calcium and magnesium are retained in the drinking water. In addition, no sodium is added to the drinking water. Instead, "lime protection" means that so-called seed crystals are formed on which the lime sticks in the water. These microscopic lime crystals are no longer deposited on surfaces, but are washed out each time water is withdrawn. Limescale protection systems are therefore of particular interest to homeowners who want to maintain their drinking water quality. Limescale protection systems also do not increase the risk of corrosion.


AQON Pure: The innovation without salt

Are you looking for a hard water solution? Would you like to reduce limescale deposits? AQON Pure is an environmentally friendly limescale protection system that leaves the valuable minerals calcium and magnesium in the drinking water and causes no running costs. AQON Pure limescale protection systems are even available with an installation service at a fixed price and a 1-year money-back guarantee. Request a non-binding offer online in just 2 minutes.