Types of Water Filters

There are many different types of Wasserfiler that can be used to remove various contaminants from water. They typically use a combination of methods – physical filtration, chemical filtration or a biological process – to cleanse the water.

For example, a carbon filter can remove chlorine from the water. It can also remove chloramines, a chemical that’s added to municipal water systems as a disinfectant.

Activated alumina

Activated alumina is a material that is often used in water filters. It is a porous form of aluminium oxide and has a large surface area.

This allows it to be effective in many different applications. It is a good adsorbent and catalyst, and it can also be used as a desiccant.

Another important use of activated alumina is in defluoridation, which is the process of removing fluoride from drinking water. This can be an effective way to ensure that your family has healthy and safe drinking water.

Activated alumina can also be used to remove other contaminants from water supplies. This can help to protect your family from lead, arsenic, and other harmful substances.

Activated carbon

Activated carbon is used to make a wide variety of products, including water filters. Its adsorption properties allow it to remove organic compounds like chlorine and bad tastes and odors from drinking water.

Generally, activated carbon filters have a pore size between 0.5 to 10 microns. This allows for a higher rate of impurity removal as contaminants cannot fit through the pores and are forced to be adsorbed by the carbon.

In addition to removing chlorine and bad tastes or odors, a good quality carbon filter will also remove pharmaceutical residue from your water supply. These chemicals can get into your water through improper disposal of drugs, or from agricultural runoff of livestock manure.

Activated carbon is also commonly used to remove pesticides from drinking water. These chemicals are common in agricultural use and can easily leach into well water from farmlands. These pesticides have been linked to a wide range of health problems. Thankfully, high-quality carbon filters are designed and tested to remove the 14 most common pesticides from your water supply.

Activated sand

Activated sand is one of the most popular materials used to make water filters. These sand filters are commonly used in various industries to filter out a wide variety of contaminants.

Unlike other types of sand filters, activated sand filters work by removing suspended matter from the water using the pores in sand. These pores are smaller than the ones found in other types of sand and can help remove pollutants such as dirt particles, bacteria, algae, and more.

Sand filters also offer a variety of options for controlling the flow rate, preventing the formation of blockages and maintaining optimal water quality. For example, many sand filters allow the user to backwash the sand to remove dirt from the pores in the sand before it gets blocked.

A slow sand filter is a simple and effective method for reducing cloudiness, organic levels, and bacteria. It requires minimal power and chemical requirements and does not require close operator supervision.


A water filter is a device that helps maintain the quality of your drinking water. It filters out impurities such as lead, chromium, chlorine and radon.

NSF-certified water filters are products that have been tested and verified to meet certain standards of performance, safety, and contaminant reduction. NSF certification is an important way for consumers to find a product that will work as advertised, and it also ensures that the filter has been manufactured with contaminant-free materials.

The most common NSF standard for water filters is NSF/ANSI 42, which requires that a filter greatly reduces aesthetic contaminants such as chlorine and chloramines. Refrigerator filters and pitcher filters often come with this NSF certification.

Another common NSF standard is NSF/ANSI 53, which allows a filter to reduce health-related contaminants such as arsenic, lead, cysts, VOCs and PFOA/PFOS. Filters that have this NSF standard must be able to remove these contaminants below the EPA healthy advisory level (70 PPT, or parts per trillion).