Product Reviews

Best Under Sink Water Filter

The Under Sink Water Filter Review

Under-sink water filters are often used by those living in areas where tap water is either unsanitary, unsightly or just weird tasting. These water filters can improve the way your water tastes and looks (in the case that your tap water is cloudy or mucky) and can actually make it significantly healthier to drink. While under-sink water filters were once a luxury meant for those with money to blow on filters and time to install them, technology has increased to the point where anyone can have them and they take a small portion of your day to install. Pretty soon, under-sink water filters are likely to become commonplace both in and outside of areas with unsightly tap water. If you plan on drinking tap water again after installing one of these filters, it’s important to find the right one, being that your health may depend on it if you live in an area where the water is potentially hazardous. Let’s take a look at how to pick a good water filter, what water filter will work for your home and what is and isn’t worth spending money on. But first, let’s take a look at an under-sink water filter who’s quality and reliability is renowned.

The Top Pick

Home Master TM Undersink Reverse Osmosis Water Filter System

The Home Master TM Undersink Reverse Osmosis System is, as the name would suggest, a water filtration system which relies on the process of reverse osmosis to clean water. It’s the water filtration system for everyone. It takes care of both big and small particles, keeping water clear and sanitary at all times.

The best part about the product is that, despite being a reverse osmosis system (an under-sink water filter that tends to take up a lot of space), it seems to be able to fit in somewhat smaller spaces, making it great those who have been looking for a similar water filter, though don’t have the space to use it.

Lastly, it’s said to remove 98% of pollutants from water, which is a very reliable figure. If you’re looking for a spacial-friendly alternative to large, clunky reverse osmosis systems, this is definitely the way to go. For more information, or to purchase the product outright.

The Competition

  1. iSpring RCC7:
  2. APEC – Top Tier – ROES-50:
  3. Watts Premier RO-Pure 531411:
  4. Express Water 5 Stage Home Drinking:

Considerations for Choosing the Best under Sink Water Filter


Home Master TM under sink Reverse Osmosis Water Filter System: It has exceptional purification and removes up to 99% of chloramines, chemicals, heavy metals, solids, etc.

iSpring RCC7: It uses the most Cost Effective Technology that rejects up to 99% of 1000+ pollutants such as chlorine, fluoride, lead, arsenic, pesticide, drugs, and fertilizer.

APEC – Top Tier – ROES-50: It has the latest technology to remove up to 99% of contaminants including arsenic, chlorine, lead, fluoride, heavy metals, bacteria, virus and 1000+ contaminants.

Watts Premier RO-Pure 531411: It has five micron carbon block filter that reduces chloramines, chlorine as well as other materials that cause bad taste and odors.

Express Water 5 Stage Home Drinking: It has 5 stage filters that stabilize the water tasting qualities and further removes any traces of bad tastes and odors.


Home Master TM under sink Reverse Osmosis Water Filter System: Its superior design uses housing for quick and easy annual filter changes.

iSpring RCC7: It is Gold Seal certified NSF Standard 58 product that ensures Premium Material, Solid Construction, and Superior Performance.

APEC – Top Tier – ROES-50: The system along with its tank is design to fit a standard kitchen cabinet. High quality Quick Connect fittings, requires no extra lock clips or steps to seal leak.

Watts Premier RO-Pure 531411: It has a high end designer chrome air gap faucet and quick change sanitary filters that can change out at the push of a button. This makes drinking water crystal clear, high quality and great tasting.

Express Water 5 Stage Home Drinking: It uses solid BPA free materials for anti-contamination and 100% lead free. The built quality standards are backed by 1 year limited warranty.


Home Master TM under sink Reverse Osmosis Water Filter System: It uses advanced long lasting filters that can filter up to 3,900 gallons water. It might require 1 year for filter changes.

iSpring RCC7: It uses gradient sediment filter, fine coconut carbon, and 0.0001 micron RO membrane, guaranteed to last longer and cost less.

APEC – Top Tier – ROES-50: It has a premium long lasting filter used to treat tap water, well water. Provide unlimited clean, refreshing crisp tasting water superior to bottled water.

Watts Premier RO-Pure 531411: It removes over 99.95 percent cysts such as Giardia and Cryptosporidium. The system has been designed to reduce Nitrates and Nitrites from your drinking water.

Express Water 5 Stage Home Drinking: It removes up to 99% of contaminants with real reverse Osmosis Technology with supreme quality Filters.

Buyer’s Guide

Purchasing the right under-sink water filter can be tricky, being that a lot of us don’t know the first thing about them. Let’s find out how to choose the best under-sink water filter for our needs.

How Much Space Do You Have to Work With?

While a larger water filter may be quicker at doing its job or even do a better job altogether, you’ll have to take a serious look at your special requirements and act accordingly. Depending the type of filter you need (something we’ll get to in a moment), it may or may not be beneficial to actually expend on the room underneath your sink. In the worst case scenario, a small filter will be better than nothing (and can often do the job, depending on what it is you’re filtering out of your water), though bigger is often better.

What Do You Need to Filter?

Under Sink Water FilterPerhaps your water just looks or tastes funny and you want to change that. While this is fine, it makes sense to figure out exactly what contaminants are in your water if you’re going to be buying a water filter anyways. Doing this is easy and shouldn’t take too much time. You have two options to go about testing your water. The first option is to call your water provider and ask them exactly what it is you’re dealing with. Your second option is to actually buy a water testing kit. These can often be found in hardware stores and can always be found online. Once you feed the testing kit some water, you’ll either be notified there and then what pollutants are in your water, or you’ll have to send in into a lab, though the latter is less common in this day and age. The more convenient way to go about testing your water would be to administer a test which gives you results on the spot.

Once you know what it is you need to filter out of your tap water, it’s time to shop for an under-sink water filter. The particles which the filter in question actually filters should be written somewhere on the packaging. If not, you’re better of shopping around until you find one that does. The benefit of testing your water and buying a filter in this manner is that you’ll filter out everything in your water, without paying extra to filter things that weren’t in your water to begin with.

Do You Always Need Filtered Water?

Some filters give users the option to turn them on and off at will. If your water is clean enough that you only need to filter it to drink, turning it off during other times will often translate to higher water pressure. If you don’t need filtered water when you’re washing dishes, it might be more convenient to get such a filter.

Is Your Water Cloudy?

There are two main types of under-sink filters, those which rely on an internal filter made of activated carbon, and those which rely on a filtering process known as reverse osmosis. Activated carbon filters are made to remove small particles. Things like chemicals and microorganisms are no match for activated carbon. They also take up less space and are easier to maintain; all you need to do to keep it going is pop out the old activated carbon and throw some new stuff in.

Reverse osmosis under-sink water filters, on the other hand, take up huge amounts of space (they actually require their own water tank, though not as big as the one in your basement) and may require professional maintenance when things go wrong due to their abundance of machinery and the complex process by which water is filter. The upside to reverse osmosis filters is that, not only will they filter out small particles, they filter large ones as well (large particles being responsible for clouding up your water).

If your water is cloudy, it’s always worth getting a reverse osmosis water filter. You may have to open up the area under your sink a bit, and may even find yourself calling plumbers a little more often, but it will fix your water completely. If your water isn’t cloudy, then activated carbon filters are your best bet, as their reverse-osmosis counterparts will likely just cause unnecessary headaches.