how does countertop water filter work

What are the strengths and weaknesses of countertop water filters?  They are very popular in today’s homes.

Typically located in kitchens, they are occasionally also installed in bathrooms, RVs, at wet bars and elsewhere.

In this house water filtration systems buying guide, you’ll get details about countertop water filters you can use to evaluate them for your own purposes.

Our goal is to help you make an informed decision you are happy about in the months and years ahead.

How Does Countertop Water Filters Work

The components of countertop water filter systems are a filtering unit and a faucet, plus the water line required to connect the two as well as to connect the entire system to the home’s water supply.

The filter unit will typically include 1-3 separate filters. The more filters there are, for separate purposes, the better the water will be cleaned of contaminants. For example, a first-stage filter might remove large sediment from the water so that the rest of the water can be more thoroughly cleansed.

A second-stage filter might remove small sediment as well as chemicals and other elements. Finally, an iron filter might remove rust and other iron from the water. Still, most countertop water filters use a single filter that removes all of these pollutants.

Countertop water filters are usually installed alongside the standard sink faucet. Most come with their own faucet for convenience.

Pros and Cons of Countertop Water Filters

Here are the strengths you’ll enjoy with one of these water filters for home use.

Good Filtration: As noted, some countertop water filters offer better filtration than others, but they all do a good job removing or reducing harmful pollutants from your home’s drinking water.

Among the most significant contaminants, they are able to filter out of the water include lead, mercury, chlorine, benzene, arsenic, chloroform, e-Coli, microbial cysts, rust and the trace amounts of pharmaceuticals that are often found in municipal water supplies.

countertop water filter kit easy Installation: Countertop filters install quickly and easily, usually with hand tools that most people already have. For most models, giving the project an hour of your time should be more than sufficient.

Changing Filters is Convenient: Under the sink, water filter systems for home use are also popular, and they have their own advantages.

But the filters can be difficult to change for many people since it requires significant bending and stooping. Countertop house water filtration systems can be changed comfortably without bending over.

Better Tasting Water: The contaminants in drinking water often harm the taste. Chlorine, salts, and sulfur can all produce poor taste and possibly unpleasant odors. These are eliminated or greatly reduced with these drinking water filters for home installation.

Affordability: These water filtration products range in cost from $40-$200.

Are there any disadvantages to using this type of water filtration system in your home?  Here’s a look at a few of their weakness.

Cheap Models Don’t Filter As Well: It’s worth noting that you tend to get what you pay for with these products. A $40 model with a single filter simply won’t do as good a job as a more expensive model with multiple filters.

If you’ve got very bad water, consider a top of the line model. You might also want to see our article on the pros and cons of reverse osmosis water filter systems for another option.

Slow Water Flow: While water flow rates vary, most countertop water filters run pretty slowly. This is a minor hassle but takes some getting used to, especially if you are filling up a large pot for cooking or a large carafe to put in the refrigerator for cold drinking water.

countertop 3 filter system filter Cartridges Can Be Expensive: While this is true, all house water filtration systems require the filter cartridges to be replaced periodically, and cartridges for countertop systems don’t cost any more than most.

Compare the cost to the expense of buying bottled water, and it turns out that using water filter cartridges to filter your own water is pretty affordable.

Takes up Room: The tradeoff to the easier cartridge replacement than under sink models is that countertop water filtration systems take up more room. In a crowded kitchen, that can be a bit of a nuisance.

Compare costs and features with under sink models and you’ll be able to determine which type is right for you.


Reviewing these pros and cons in light of your specific requirements will help you decide if a countertop water filter system is the best home water filter for you. See our individual reviews for more details on top models from leading brands.


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