It’s not always easy to find the perfect water filter treatment method for you, especially if you’re not familiar with any of the water treatment solutions available on the market.

Before you can decide on the treatment solution, the first step is finding out what contaminants you need to target, and only then you can choose a system from the wide range of water filtration systems available.

While you’re researching water filters, you may come across point-of-entry whole house water systems and wonder whether they’re a suitable option for you.

In this article, we are going to discuss everything you need to know about these home water filter solution.

We’re going to cover the most important things you should know before installing a point-of-entry whole house water system, whether it’s worth choosing a point-of-entry filtration over point-of-use filtration methods, and how to maintain a POE whole house water system.

What are Whole House Filters?

The importance of installing the right water filter system in your home cannot be overstated. Your filter must meet your filtered water requirements both in terms of water quality and water volume.

To avoid wasting money and energy on a water filter that wasn’t designed to filter out the contaminants in your water, make sure to do some research, or ask for help from your water filter vendor.

Whole house filters are a central water treatment unit designed to clean your entire water supply. If you want filtered water at every single water outlet in your home, whole house water filters are both the easiest and most convenient way to achieve this.

These filtration systems are also called point-of-entry (POE) filters because they filter your water as it enters your home. This ensures that water will be purified before it gets distributed to different water outlets throughout your home.

Installing a whole house filter makes it possible to constantly have purified water in your kitchen and bathroom, so you won’t need to install a separate filtration system for every single unit in your home.


Why Install a Point-of-Entry Water Filter?

Installing a point-of-entry water system in your home will make your water purification efforts much easier.

These water filters come with three main advantages that should be in your focus when purchasing a central water purification system.

POE filters are not just efficient, but convenience, reduced costs and easy maintenance are also huge benefits that these type of water filters can offer.

Let’s see why installing a point-of-entry water filtration system is worth it:


  • They are convenient: As mentioned above, POE filters make it possible for you to have access to purified water with consistent quality throughout your entire home. This means that you won’t need to buy a different water filters for each water outlet. By using this kind of filter, you will be able to enjoy the same filtered water in your kitchen and your bathroom, so in this sense installing a single water filter is more convenient.


  • Using them is cost-efficient: Having a point-of-entry water filtration system installed in your home will help you to save some money. And saving money is a huge advantage when it comes to water treatment. In case you choose to install a whole house water filter, you will have to invest in one filter system as you won’t need to install a separate filter for every water outlet. Less installation to deal with, less money to spend on maintenance. Therefore, a POE water filter is absolutely a great deal if you want to reduce your expenses.


  • Complexity is an extra benefit: Since whole house water filters are usually multi-stage filter systems, they use various types of filter materials and filtration methods to fight harmful contaminants in you water. So, the complexity of these filters is an advantage, because they can get rid of a wide range of contaminants other water filters may not be able to filter out.

If these advantages are right up your alley, you should consider POE filtration as an option.


When to Install a POE Filter?

Other than these advantages, in some cases, a home water treatment unit is a necessity and not a choice.

We’re talking about situations when homeowners don’t have access to municipal water and rely on private water sources that haven’t gone through any prior treatment.

In these cases, a POE filter system can purify the entire water supply and ensure drinking quality water without any problems.

If you don’t want a filter for drinking water purposes only, a whole house water treatment unit is the easiest way to get filtered water throughout your home no matter how many water outlets you have.


What Do These Filters Remove?

Point-of-entry whole house water systems target a wide range of impurities and contaminants.

Depending on the filter cartridges they integrate and filter media in them, they can be both more efficient and complex than some point-of-use filters.

Therefore, for the most part, high-performance POE home water treatment units remove:

Sediments like rust, sand and other suspended particles. These are removed thanks to the sediment filters that are usually the first filter cartridge in a multi-stage POE filter;

Chemical contaminants like chlorine and its by-products, VOCs, herbicides, pesticides, etc. These are removed by the activated carbon filters, which can be carbon block filters or granular activated carbon filters or both;

Cysts, cryptosporidium, giardia and other bacteria, which can be removed by nanofilters and ceramic filters;

Other chemicals like fluoride, heavy metals, scale, and taste and odour issues, which can be removed by KDF and other specially designed filters.

As you can see, there are various contaminants that can be targeted with POE filters. But first, you must get your water analysed to know which of these filters should your POE water treatment solution integrate.


How Difficult is Maintenance?

In terms of installation, whole house water treatment units may be a bit more difficult to install than your run-of-the-mill filter system, but since it’s a one-off installation, this shouldn’t stop you from getting one installed in your home with the help of a professional.  

When it comes to the maintenance of point-of-entry whole house water filters, we must mention that changing filters in these types of water filter systems is not more difficult than changing filters in a point-of-use filtration system.

It requires the same level of maintenance, except that in case of POE filters, you may have to deal with the replacement of multiple cartridges.

But even POU filters can have a lot of cartridges, so there’s really no difference between the two types of filters when it comes to maintenance.

Also, cartridges may be a bit bigger and the whole system may be a bit bulkier than undersink filters, so having enough storage room for them is something you must think about in advance.

It goes without saying that the only way to maintain a filter system is to make sure you’re not skipping any filter replacements.

With whole house filter systems, it’s even more important to be up-to-date with maintenance. Just think about it – if you don’t change filters on time, your entire water supply can be affected.

Set reminders when filter replacement is due, always have extra replacement cartridges on stock, and stay on top of all maintenance related tasks.  


What about Filter Taps? Do You Need One with a POE Filter? 

Another advantage of these types of filters – an advantage that is often overlooked – is that there is no need for a separate filter tap when you have a POE filters system.

These filters are installed so that all your water supply gets filtered and you don’t need to get a water filter tap in addition to your regular kitchen tap.

Therefore, you can keep your regular kitchen tap.


How Many Filtration Stages Should Point-of-Entry Whole House Systems Integrate?

There isn’t a rule for the number of filtration stages that should be incorporated in a POE filter. Still, it’s not uncommon for these filters to use multiple types of filter cartridges or filtration methods.

Because of the complexity of these filters, they’re more efficient at getting rid of harmful contaminants.

Most point-of-entry filters are made up of several filter cartridges, which means that the filtration process is carried out in multiple stages.

But let’s see how many stages of filtration are required in a POE whole house system to remove the dangerous pathogens and contaminants from your water?

  • In case your whole house water filter is a reverse osmosis system, it should have 4 or more stages. The four stages consist of one sediment pre-filter, one carbon block pre-filter, one reverse osmosis membrane and a carbon block post filter;


  • If your whole house filter is an UV water filter, it should have at least 3 different stages. This means that your water filter will need one sediment pre-filter, one UV filtration unit and one carbon block filter;


  • If your water filter is not a UV filter and does not rely on reverse osmosis filtration, then the recommended number of filtration stages should be at least two. One filter cartridge should be responsible for removing sediments, chlorine, VOCs, pesticides, herbicides (e.g. a sediment + carbon block filter). The other one will deal with bacteria, heavy metals, and other metals and chemical contaminants (e.g. kdf filters, active ceramics, etc.).


These are just guidelines to the number of filtration stages and ultimately the contaminant removal rate and contaminant removal capabilities of the individual cartridges making up the system will determine the number of stages required.

In this sense, the number of filter cartridges shouldn’t be the only aspect to consider when buying a whole house water treatment unit.


Final Thoughts

If you have a large household, installing a point-of-entry whole house water filter system might be the most practical choice for you.

As we’ve discussed, these filters are cost-efficient, easy to maintain and highly convenient. Whether enjoying a bath, washing your clothes or drinking a tea, they make sure that your whole household gets the same high-quality filtered water no matter which tap you turn on.