10 Best Water Filters in the Philippines 2025

Microfiltration filters have pores with sizes of approximately 0.1 micron. They are highly effective at removing protozoa such as Cryptosporidium, which is the leading cause of waterborne diseases. It has moderate effectiveness in removing bacteria while it is ineffective against viruses and chemicals.

This type of filter has a pore size of approximately 0.01 micron. At this size, the particle charges help with the filtration, bolstering its effectiveness. This filter is highly effective at removing living organisms such as Salmonella and E. coli. It is also moderately effective at removing viruses such as Hepatitis A and Rotavirus.

As the name suggests, this filter has a pore size of 1 nanometer or 0.001 micron. This is also the smallest pore size available for filters. They are highly effective in removing all living organisms present in your water, even viruses. Due to its size, it can remove some chemicals due to the presence of charges in the absorption material.

Since these filters are not connected to your plumbing, it makes them portable and easy to use. No installation is required as well, just put water inside the filter and pour it out to remove the contaminants. These are best used in dormitories or apartments where commitment to staying is short.

The filtration system, however, reduces only a few contaminants, such as chlorine. Because it is used as a container, with the water stored inside the pitcher for quite some time, contaminants can still seep in. 

Pitcher filters are mainly used to improve the taste and odor of your tap water, but the removal of other contaminants is something to be desired. Also, make sure to clean them often to reduce the risk of contamination. 

If you are planning to rent and want a good enough filtration setup, get a faucet filtration system. It can remove a good number of contaminants depending on the model and brand.

This type of filtration system is mounted to the spout of your faucet. However, some faucets have different shapes and attachment options, so check if the filter you’re getting matches your faucet.

Next to faucet filters, countertop filters are located on the counter next to the sink and are connected through a pipe that leads to the faucet. The water is pushed through a filtration system that uses a mechanical filter coupled with activated carbon which can effectively reduce contaminants present in your tap water. 

The downside is that they aren't hidden and the faucet attachment depends on its spout design. Nonetheless, if you want an effective filtration system for your kitchen or bathroom, countertop filters are a good choice.

As the name suggests, under-the-counter filters can be found under the sink. They are connected to your water line directly, leading to your faucet, and dispense filtered water through a secondary faucet. 

If you are adept with plumbing, you can install under-the-counter filters or have a plumber do it for you. They require a reservoir but they can be easily hidden and filter large quantities of water. Just make sure that your sink has enough space underneath.

Reverse osmosis filters are systems that you need to plumb into your faucet to work. They are connected to a second faucet or at the main faucet, which can be activated using a lever if you want to use the filter. 

These require more space and more energy than your normal under-the-counter filter due to the requirement of a separate water tank however, the filtration effectivity outweighs the cons.

Activated carbon filters work through the process of adsorption wherein the particles adhere to the surface of the material. Since they are made from carbon, they attract contaminants the best.

They are effective in removing most chemicals present in tap water such as chlorine, pesticides, and herbicides. If your water taste and smells funny, this type of filter can improve that as well.

This type of technology removes particles and harmful substances by boiling the water, turning it into steam, and then collecting it afterward. The evaporation process leaves the contaminants behind, mostly minerals and microorganisms. 

However, this type of filtration method cannot remove chemicals that turn into gas, such as pesticides and herbicides. Also, due to the presence of heat, this method requires more energy than other filtration technologies.

This type of method forces water through a membrane. This membrane can let water molecules out but is able to trap anything larger than that. Large particles are easily filtered out but, chlorine and volatile organic compounds such as pesticides can pass through the membrane. 

Reverse osmosis units are often used in conjunction with activated carbon filters to be highly effective; however, they can waste a lot of water in the process. Hence, it's important to weigh out the pros and cons before purchasing this type of filter technology.

The process of removing heavy metals can be done by passing water through an ion exchange unit, which replaces the metal ions with sodium or potassium ions, making it safe to drink albeit saltier. 

This type of filtration is used in combination with activated carbon or reverse osmosis filters. The use of potassium ions is much more popular since they are able to remove metals without increasing the salt levels in the water.

If your water is highly contaminated by microorganisms or you want to ensure that none exists in your supply, treatment using UV light is the way to go. UV treatment is highly effective in eliminating all types of bacteria and is accredited by some agencies such as the Environment Protection Agency and the Food and Drug Administration.