Why should I change my water filter after 6 months?

Since bacteria can also grow unchecked in drinking water, the formation of a biofilm on the filter cartridges must be avoided!

To prevent the growth of bacteria, the filter cartridges should be replaced every 6 months, especially even with infrequent use!

Regulation DIN 1988 | Technical Rules for Drinking Water – Installation (TRWI)

DIN 1988, Part VIII requires a filter change after 6 months! For hygienic reasons, the water filter cartridge must be replaced at least every 6 months. The reason for this is that bacteria could accumulate in front of the water filter over time. To prevent this, a change every 6 months is mandatory.

FILTER HOUSING leaking?

Tip for changing the water filter:

For the Replacement of a water filter It is important to have the correct replacement filter and to carefully follow the steps to ensure proper functioning. Here are some general steps you can follow:

1. Turn off the water supply: Make sure that the water supply to the filter is turned off.

2. Release pressure: Release the pressure from the system by opening the faucet until the water no longer flows.

3. Remove old filter: Open the filter housing and remove the old filter. Be careful not to damage any parts.

4. Replace filter: Insert the new filter and make sure it fits properly.

5. Close filter housing: Screw the housing back on tightly.

6. Restore water supply: Turn the water supply back on and check if everything is sealed.

7. Flush system: Let the water run for a few minutes to flush the new filter and remove air from the system.

When changing the water filter, it is No power needed! Be sure to use a Filter housing wrench, to open the case gently and safely – this way you avoid damage caused by overtightening or misalignment.

💡 Extra tip: Apply a small amount LUBRIKIT (Lubricant) on the sealing ring of the filter housing.
This makes later opening easier, protects the seal, and ensures an optimal fit – all without force.

How can I test my water quality quickly and easily?

When testing water, it depends on what the water filter is needed for. In most cases, the water filter is used in the drinking water network, as water utilities meet most of the requirements of the Drinking Water Ordinance (TVO). However, it still happens that contaminated or even harmful drinking water comes from the household tap. In these cases or with a water supply
From a well or unknown waters, an analysis of the water quality provides an initial assessment.

A water filter recommendation can only be made if we know all the parameters of your water. We are happy to assist you if you would like to have your drinking water tested in a laboratory for chemical-physical water analysis and microbiological water examination.

Our affiliated laboratory offers you a drinking water analysis for coliform bacteria, Escherichia coli, enterococci, pharmaceutical residues, aluminum, arsenic, bacteria, lead, bacteria, hormones, fluorine, fluoride, fungicides, Giardia, legionella, microorganisms, pseudomonas, pesticides, iron, manganese, salts, sediments, heavy metals, viruses, or even just for the evaluation of the total hardness of the water.

Which drinking water analyses can I order?

Our test kits are suitable for preliminary drinking water analysis of tap water, well water, etc. The following water tests can be ordered in the shop:

https://shop.purway.de/pages/wassertest-für-verbraucher

Legionella testing: our popular drinking water analysis for legionella.

Microbiology: Drinking water analysis for so-called hygiene indicators (intestinal bacteria).

Lead: Test for the heavy metal lead in drinking water.

Heavy metals: Water analysis for 15 different heavy metals.

Well water analysis: Testing for iron, manganese, nitrate, germs, etc.

Assembly of water filter housings

The installation of water filter housings should only take place in rooms where the temperature does not fall below 2 °C. Frost can damage the water filter housing.

Transparent filter cups should not be installed in areas of direct sunlight to prevent possible bacterial growth on the filter cartridges.

When installing, leave at least 10 cm of free space below the filter housing to facilitate the replacement of the filter cartridges.

Was ist die Wasserhärte?

The term "hard water" means that water contains more minerals, especially calcium and magnesium. In other words, when water contains a significant amount of magnesium and calcium, it is referred to as "hard." Water hardness increases along with an increase in the concentration of dissolved calcium and magnesium in the water.

Water hardness °dH German degrees of hardness:

Hardness range "soft" less than 1.5 millimoles of calcium carbonate per liter (equivalent to 8.4 °dH)

Hardness range "medium" 1.5 to 2.5 millimoles of calcium carbonate per liter (equivalent to 8.4 to 14 °dH)

Hardness range "hard" more than 2.5 millimoles of calcium carbonate per liter (equivalent to more than 14 °dH)

How can I remove limescale from drinking water?

1. Water filter cartridges with resin can exchange the calcium cations dissolved in normal tap water for sodium cations bound in the resin. This only works at a low flow rate, and the resin in the filter cartridges becomes exhausted after treating a certain amount of water and must be replaced.

2. With a reverse osmosis system, you get pure water without minerals. The reverse osmosis system removes all soluble and dissolved minerals with a very fine membrane through a pressure process using a booster pump.

3. A water softener exchanges the lime [Ca+] for sodium [Na+]. You receive lime-free and soft water, but the sodium content in the water increases. The advantage of a water softener with automatic backwash is that it provides permanent water softening even at higher flow rates and for several years. The filter medium is regenerated as needed using a salt solution. Only pure salt needs to be refilled.

Function of water softening systems Water softeners Water softening systems as anti-limescale filters.

Everywhere hard water is heated, limescale precipitates, such as in water heaters, instantaneous water heaters, washing machines, dishwashers. Coffee machines as well as shower cabins and bathtubs are particularly prone to limescale buildup. Limescale not only shortens the lifespan of the appliances but also causes higher energy consumption.

This process is electronically controlled in the softening system.

Softening systems are only filled with ion exchange resin. This resin binds the calcium and magnesium ions dissolved in the water and exchanges them for sodium ions. During the electronically controlled fully automatic regeneration, the ion exchange resin is cleaned with a mild brine solution made from salt tablets, so that the calcium and magnesium ions are released again.
can be dissolved and discharged into the wastewater during the regeneration process. To prevent regeneration brine from entering your household water system, the regeneration and drinking water circuits are completely separated from each other.

The advantages at a glance:

· Gently soft, lime-free water in the shower and bathroom

· Noticeably gentle on the skin

· Smooth shiny hair

· Soft laundry without the addition of fabric softener / softener

· Sparkling glasses and shiny dishes

· Protection against limescale deposits on fittings, tiles, and in the pipelines

· Increased lifespan of household appliances

· Up to 50% less consumption of detergent, fabric softener / softener

· Less energy and heating costs - Active environmental protection

Iron in water?

An iron filter reduces the iron concentration, hydrogen sulfide content, metallic taste, and unpleasant odor of the water. An iron water filter is used to remove iron and manganese content from the water. These impurities can occur in some water supply systems and can cause various problems, such as discoloration of the water, deposits in pipes and appliances, as well as an unpleasant taste or odor of the water. The immediate consequence of too high an iron content in the water is the formation of rust stains on sanitary fixtures (bathtubs, sinks).

The Fe² dissolved in the water is converted to Fe³ and removed from the water. The iron filter uses hydrogen sulfide to oxidize Fe² to Fe³.

At high flow rates and water consumption, we recommend the use of a de-ironing system with automatic backwashing. The filter medium with high and rapid oxidation capacity ensures effective and efficient removal of iron and manganese over several years. No refilling of regeneration agents is necessary.

Water with a bad smell?

The smell of chlorine in the water caused by excessive amounts of chlorine and its derivatives can be neutralized using activated carbon. Either activated carbon granules or an activated carbon block can be used. Activated carbon granules are particularly suitable for heavy contamination due to their extremely large filter surface area. A carbon block made of compressed activated carbon additionally offers nominal filtration of, for example, 10 microns, meaning all insoluble sediments up to a size of 10 µm are filtered out.

What can I use a countertop water filter for?

What are the advantages of a countertop drinking water filter:

- can be retrofitted everywhere without a craftsman through self-installation

- child’s play to connect to existing faucets

- easy switching between regular and filtered water

- Takeaway for vacation or holiday home

- very easy and quick water filter replacement

What are the disadvantages of a countertop drinking water filter

- doesn't look so nice in the kitchen

- disturbs on the kitchen countertop or sink

What is the pH factor and what is the appropriate value?

The pH scale ranges from 0 to 14, with a solution having a pH value between 0 and 7 being acidic and a solution between 7 and 14 being alkaline. A pH value of 7 is neutral.

The pH factor indicates the acidity level of aqueous solutions. The correct pH value of the water should be between 6.5 and 9.5 according to acceptable standards.

How does a reverse osmosis system work?

In the reverse osmosis system, also called RO system or osmosis system, the contaminated water is pressed through a reverse osmosis membrane using a booster pump. The water molecules are separated from the pollutants and impurities in the membrane.

The very fine pores of the membrane have a diameter smaller than 0.0001 microns and thus only allow the smallest molecules to pass through the membrane.

The pollutants and contaminants are discharged into the wastewater, resulting in pure, low-mineral, and contaminant-free drinking water (permeate).

The best reverse osmosis systems are considered to be the direct flow tankless reverse osmosis units, which operate without an additional tank thanks to a high-performance membrane. The permeate is immediately available from the faucet and does not need to be produced and stored over a long period. Additionally, the risk of germs is reduced by omitting a tank.

The quality of the membrane is of crucial importance; the different manufacturing processes of the membrane determine the quality of the water and the taste.

Function of UV Water Filter and UV-C Water Disinfection System

In UV sterilization systems, flowing water is continuously irradiated with a dose of UV light. The disinfecting effect prevents the spread of 99.99% of all germs present in drinking water. The high-energy UV-C radiation destroys all microorganisms such as algae, bacteria, viruses, and microbes.

A UV water disinfection system provides safe disinfection without the addition of chemicals and is very gentle on people and the environment.
 

What do I need a bacteria and virus water filter for?

Bacteria and viruses in drinking water or well water can cause a foul taste or health impairments. Since bacteria typically range in size from 0.6 to 1.2 µm, we recommend a PCA 0.3 mcr bacteria filter with a pore size of 0.3 µm to reliably remove all bacteria and many viruses.

Drinking water filters against bacteria are also often installed for protection against Legionella.

Good water filters can remove bacteria, viruses, or E. coli and Legionella from drinking water, among other things!

Legionella bacteria can cause, among other things, a life-threatening legionellosis, which can develop into a severe pneumonia.

Medication residues and hormones?

Residues of pharmaceuticals have been detected in drinking water for years through scientific studies. Medications such as antibiotics and hormones, like the birth control pill, are among the most commonly found active substances in drinking water.

Die CA-SE 10 HF-U BX 0.02 mcr - Ultra Filtration Cartridge removes fine sediments and all bacteria such as E. coli, Salmonella, Vibrio cholerae, Legionella, Pseudomonas, and protozoa (Giardia, Cryptosporidium).

What is a rainwater filter, and how can I use it?

A rainwater filter is used for rainwater purification. As a rainwater filter for a cistern, the initially effective coarse filter is generally referred to.

It primarily serves to prevent the intrusion of small animals, leaves, and plant parts. Subsequent filter units ensure finer secondary filtration.

The placement of the rainwater filter can also be done on the drainage paths to obtain clean watering water.
 

What do I need a backwash filter for?

On the often long journey from the waterworks to the house connection, there is a high probability that foreign substances such as sand, rust, or suspended particles will contaminate the water. This reduces the lifespan of household appliances such as pumps, washing machines, dishwashers, coffee machines, kettles, etc.

It is better to install a backwash water filter in between. Use a pre-filter or device protection water filter to protect your devices.