Alfiltra water treatment
Alfiltra water treatment


There are many regional differences and peculiarities when it comes to drinking water . Personal preferences and requirements often require quality control and – if necessary – correction. At Alfiltra GmbH, we have made it our mission to provide you with the necessary service and the right products.

We equip you with various filter systems and take care of assembly and installation for you. Apart from that, we start much earlier. If you wish, we can carry out a comprehensive water analysis in our partner laboratory. Let us advise you and benefit from years of experience and growing know-how in our specialist field.

Quality for the highest demands

constant quality control

✓ We only sell products that we are 100% convinced of

✓ All products are designed for a long service life

✓ Guaranteed tightness (in-house pressure testing)

Reliability first

✓ Reliable technology, some of which has been tested for decades

✓ Low downtime guaranteed

✓ We prefer to use components from well-known manufacturers

A thumbs up for the quality of the highest demands of water treatment from the professionals at Alfiltra

Save up to 50%

Fair price-performance ratio

✓ up to 50% cheaper than your local installer

✓ Price advantage through direct sales from the factory

✓ fair and transparent pricing

✓ low follow-up costs due to low consumption

A person calculates the fair price-performance ratio of Alfiltra's water treatment on a calculator

Assembly service

Own factory customer service

✓ You can have our products installed and maintained in Germany by our professional factory customer service.

✓ Trained staff from our own master workshop

✓ Smooth communication thanks to German-speaking specialists

Further information on the assembly service


Purchase on account possible

Shopping without risk

✓ With us you can buy without risk and conveniently pay by invoice (from 500 € purchase value for shipping to Germany).

✓ Other payment methods are possible: Paypal, direct debit, credit card and advance payment with 2% discount

Further information on payment methods

A man sits back and relaxes as he can pay for Alfiltra's water treatment by invoice.

Free shipping*

✓ Shipping to Germany is free for orders over 250 €.

✓ We ship with DHL and DHL Freight

more information about shipping costs

A blue van represents free shipping when ordering water treatment accessories from Alfiltra.
Screenshots of real experiences with Alfiltra water treatment products

Real testimonials

  • Detailed reports with real customer photos
  • Filter reports by asset type
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Latest Pages

Latest Questions

Product: REOS HOME under-counter reverse osmosis system

Answer: Precisely because the system is very compact, changing the filter is relatively uncomplicated. You turn off the water and can then place the entire system on the sink or take it outside. Only the water that is in the hoses comes out.

Product: DUPLEX water softening system in a carefree package

Answer: There is no obligation for such a measurement because the water complies with the Drinking Water Ordinance either way. As a rule, it is sufficient to check the system every 12 months as part of maintenance.

Product: LOWARA small pressure booster system BGM 9/A

Answer: The pump can be used for this without any problems. We would be happy to advise you on this, including regarding storage tanks etc.

Product: PENTA multi-filter system

Answer: First the 80 μm pre-filter is installed, then the Penta system and then the carbon followed by the 20 μm sediment filter.

Product: Key for filter housing 2-1/2"

Answer: The key is made of plastic.

Product: 20 litres of demineralised water in a canister

Answer: Our water is suitable for this and is also used by many plumbers. You are also welcome to discuss this with your installer; the data sheet with the water specifications can be found on the product page under Downloads. Alternatively, the water can be treated on site using a mixed bed cartridge.

Product: ZIP reverse osmosis system

Answer: The question is not easy to answer, generally the ratio is 50/50. Since you don't have to empty the water (it collects back in the container) but only fill it up with new water, you can continue to process the other 50%. Only after the 10th run should you refill the basic tank.

Product: REOS Plug & Play reverse osmosis system with softening system

Answer: Basically, you can connect the system as it is delivered to the water, wastewater and electricity and produce water directly. We also offer various accessories such as storage tanks if necessary. That depends on your requirements. We would be happy to create an individual offer.

Product: BASIC softening plant

Answer: This is a complex topic that is controversially discussed on the Internet. The first thing that should be mentioned is that these days mainly plastic pipes are used and no corrosion is to be expected. When water is softened using ion exchange, no CO2 is released and the pH value of the water is not changed. This would look different if the water was treated using reverse osmosis, for example. It is known that copper pipes are subject to a certain degree of corrosion regardless of the quality of drinking water. However, this corrosion is usually so low that copper is considered a durable material. The low corrosion rate of copper in drinking water results from the formation of a coating on the surface of the material consisting of various copper compounds. This layer is reinforced by small amounts of embedded lime, which increases its anti-corrosion effect. In softened water, this limescale deposit is missing, which can reduce the protective function of the top layer. Nevertheless, the protective effect is sufficiently strong to generally prevent corrosion damage over human generations. In summary, there is no absolute freedom from corrosion in copper pipes in drinking water systems. Although water softening has an influence on the protective top layer in the pipes, it only has a negligible impact on their service life. If you had problems with corrosion before installing a softening system, then you should think about installing a dosing system or replacing the pipes.

Product: REOS Plug & Play reverse osmosis system with softening system

Answer: This depends on the respective model. Here are a few calculations (under optimal conditions): The model with an output of 150 l / h needs almost 7 hours for 1 m³ of water with a power consumption of 0.5 kW. This corresponds to approximately 3.6 kWh per m³. The model with 300 l / h output therefore needs approx. 3.5 h for 1 m³ of water with a power consumption of 0.65 kW. This corresponds to approximately 2.16 kWh per m³. The model with 600 l / h output, on the other hand, needs less than 2 hours for 1 m³ of water with a power consumption of 2.2 kW. This corresponds to approximately 3.6 kW per m³.

Satisfied costumers

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