Under sink water filters are now more efficient than ever. Some of the contaminants previously removed from the water only with the help of reverse osmosis systems are now being blocked by these filters.
But did you know that unlike reverse osmosis systems, under sink filters don’t produce any wastewater?
In the following article, we present the most efficient best under sink water filters of 2018. Not only do we discuss their pros and cons, but we also explain why using an under sink filter is an efficient way of producing fresh drinking water for you and your family.
We’re certain that after reading our under sink water filter reviews you’ll be able to make an informed decision about which model is best for your household. These are efficient filters, and they’re also more environmentally friendly than other filtration solutions.
Best Under Sink Water Filter Reviews (Updated List)
1. Doulton W9330958 SuperCarb Under Sink Water Filter

The cartridge filters the water in four different stages, making sure that most of the contaminants will be removed from your drinking water.
The first stage of the filtration consists of passing the water through a carbon block filter. This will remove most of the particles floating in the water, including bacteria, parasitic cysts, and any bad odors or tastes as well.
The second filter has antibacterial properties and it’s self-sterilizing so it won’t become contaminated over time. The third filter is another carbon one that removes chlorine, any lingering tastes and odors and organic compounds. The fourth filter reduces the heavy metals present in your water.
- Pro
Durable – This water filter has a solid housing and thick tubing. This makes the filter more durable than other products you’ll most likely find on the market. - Con
Needs Some Parts – Not all the parts needed for the installation are included in the box. You will have to buy some of them from your local store.
2. APEC WFS-1000 3 Stage Under Sink Water Filter

One of the advantages of using this water filter is the ease of installation. Unlike other water filters that need several additional parts, this model comes with all the equipment you need for the installation. The filter also comes with pre-drilled holes so you can mount it on the wall.
Another advantage is the good water pressure it offers. Water filters usually do a great job at cleaning the water, but they don’t provide a high water pressure. This is not the case. Despite passing the water through 3 separate filters, the water coming out of the faucet still has a good pressure.
- Pro
Good Faucet – This under sink water filter comes with a high-quality faucet. The faucet has a stainless steel construction, so it’s better than the cheap plastic models other filters come with. - Con
Faucet Has One Finish – The faucet only comes with a stainless steel finish. This might be a problem for people who have other finishes for their fixtures.
3. CuZn UC-200 Under Counter Water Filter

First of all, the major advantage of using this water filter is the good and easy installation process. Unlike other under-sink filters, this one doesn’t need an additional faucet. It will connect directly to your sink’s cold water line instead. The filter also comes with all the components you need for the installation.
Another advantage is the long lasting filter it uses. This under sink filtration system uses a filter capable of producing up to 50,000 gallons of filtered water. Most people will filter this volume of water in about 5 years, so it’s safe to say this filter lasts more than others.
- Pro
Simple Installation – This unit has one of the simplest installation processes. You will only need an adjustable wrench and the components that come with the filter. There are several instructional tutorials you can watch if you encounter any problems. - Con
A Little Large – This water filter is a little larger than other models. This can be a problem if you also use a disposal system in a small cabinet.
4. Aquasana AQ-5300.55 3-Stage Under Sink Water Filter

The Aquasana under sink filter is highly effective. It will remove most of the contaminants in your drinking water, including chlorine, pesticides, herbicides, heavy metals, and VOCs.
One of the advantages of using this water filter is its twist-off design. Once a water filter needs replacing (about once every 6 months) you will only have to twist it off and twist the new one on. The filter change will only take up to 5 minutes, so that’s a big plus.
Another advantage is that this filter comes with a good faucet. Not only that, but you can actually change the faucet’s finish when you buy the filter, so it will match the rest of your fixtures.
- Pro
Filter Change Notification – You won’t have to guess when the filters need changing if you’re using this model. The system will notify you when the old filters have to be changed. - Con
Poor O-rings – This filter comes with poor O-rings. The rings will fail after 2 or 3 years of use. However, the company will send you new ones if you contact them.
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