Best Under Sink Water Filter System 2019

(Last Updated On: January 2, 2019)

As I said in The TIPs of How to Choose the Right Water Filter or Purifier, under sink water filter system is the best for drink and food material at home. Many family will select at least one water filtration system in house, the under sink water filter system is the best choice.

So how to select the best one? Is it difficult to make the choice?

It is difficult to make it clear before you read the article, but no confused after you read the following content … KKKK.

Before you read the following article, please read these two article first:

The TIPs of How to Choose the Right Water Filter or Purifier

Infographics: How to Select the Best Water Filter

Now you know what is the multi-stage, 5 or 6 stage as usually. The theory is similar.

So let’s take a look the best 5 under sink water filter system on 2019 first:

4Express WaterROALK5D5LINK4.5
5Home MasterTMAFC-ERP7LINK4.8

iSpring RCC7AK

The picture of iSpring RCC7AK:

Main Features:

  • High Capacity Reverse Osmosis water filtration for safer, healthier water. This under sink mounted water filter and water softener removes up to 99% of over 1,000 contaminants, including lead (removes up to 98% of lead), chlorine, fluoride, arsenic, hormones, asbestos, calcium, sodium, bacteria, giardia, viruses and more. Feed Water Pressure: 45-70 psi
  • Experience clean, safe, good-tasting water every time you turn on the faucet. Enjoy crystal clear ice cubes, fresher tea and coffee, better tasting foods, healthier baby formula – even better than most bottled water.
  • The RO membrane removes not only harmful pollutants but also a few helpful minerals. As a result, a standard 5 stage RO system produces slightly acidic water with a pH of 7.0 or below. The iSpring RCC7AK includes an additional sixth stage – an Alkaline Remineralization filter which restores healthy minerals and produces a balanced alkalinity, which gives the water a more natural taste than regular 5 stage RO water.
  • Premium quality components ensure highest reliability and low maintenance for many years to come. Clear see-through 1st stage housing makes filter inspection a snap.
  • Easy, do-it-yourself installation, typically in a couple of hours with industry-leading help just a phone call away. Fits under a standard kitchen sink, with all parts included and clear, well-organized instructions and videos. For leak-free installation, simply push tubing ½ inch deep into quick-fitting connectors and lock – no threading pipes needed.
  • Features beautiful European-designed brushed nickel all-metal faucet. 1-3 hours for the system to fill the tank


  • Filter Kits to Buy, Reasonable Price
  • The Storage Tank has a Valve
  • Easy to Install
  • Taste Pretty


  • Only three years warranty, not five as other brand
  • Have some quality control problem, some bottle will broken

Buy at


The picture of APEC ROES-50:

As I written last year, APEC is the best under sink water filter system brand until now.

Apec, #1 Best Seller in Under-Sink & Countertop Filtration, Professional Reverse Osmosis Filter

They have three main models in the market, ROES-50, ROES-PH75, and RO-90. APEC ROES-50 is the cost effective product!

Main features of APEC ROES-50:

  • Supreme quality – designed, and assembled in USA to guarantee water safety & your health.
  • Only technology to remove up to 99% of contaminants including arsenic, chlorine, lead, fluoride, heavy metals, bacteria, virus and 1000+ contaminants
  • Premium long-lasting filters used to treat tap water, well water. Provide unlimited clean, refreshing crisp tasting water superior to bottled water
  • America’s No.1 rated water filter brand with 20 years of success guaranteeing trouble free, noise-free system for long lasting, dependable, pure drinking water.
  • System comes with 100% lead-free designer faucet, plus FDA Certified JG Food grade tubing and parts to provide safe, contamination-free pure water.
  • 2 year extended manufacturer warranty with registration. System comes with all parts and industry’s best instructions and videos for an easy DIY experience.
  • High quality leak-free quick connect fittings require no extra lock clips to seal leak, and does not rely on water leak detector to protect your home like other brands.Pipe Size:1/4 inches


  • Easy to Install, DIY Friendly
  • Good Customer Service
  • Made in USA, well made and package
  • High Cost Effective


  • Someone think it is a little big, but fulfill the industry level
  • No other cons any more…

Buy it at

CuZn UC-200

The picture of CuZn UC-200:

Just as the name, it looks as a professional chemical water filter, but not. CuZn UC-200 has 3-stage filtration system in one bottle.

Main features:

  • INCREDIBLE CAPACITY/LIFETIME: 50,000g or 5 years! CuZn Backs The UC-200’s Performance with a 5 year Pro-Rated Warranty and all CuZn Products Carry a 90 Day Satisfaction Guarantee. The UC-200 is Designed for use with Municipal Water not Private Well Water. The UC-200 is a Water Purification System, it is NOT a Water Softening System.
  • NO THIRD FAUCET HASSLE & SIMPLE TO INSTALL: Connects Directly to your Kitchen Sink’s Cold Water Line. Only Takes a Few Minutes. All You will Need is an Adjustable Wrench for Tightening Connections. NEW Install Video Instructions Available, See Product Description for Details. Questions or Non Standard Under Counter Plumbing? Send us an Email or Call CuZn’s Customer Support Team @ 800.345.PURE (7873)
  • 3 STAGE FILTRATION PROCESS: Micro Sediment Membranes, KDF-55 & Coconut Shell Carbon. The UC-200’s Process Purifies the Water Without Removing Health Beneficial Hardness Minerals, The UC-200 DOES NOT REDUCE TDS READINGS, a PPM or TDS Meter is Not Effective for testing. To Monitor The UC-200 with Testing, Utilize DPD#1 Chlorine Test Strips and Replace when Chlorine Breakthrough is Detected. Want TDS Removal? Search ASIN# B019N7VG1W on Amazon to View CuZn’s Reverse Osmosis System.
  • BACTERIOSTATIC FILTRATION SYSTEM: Unlike Carbon Only Filters, The UC-200 is Bacteriostatic and Not Susceptible to Mold or Bacteria Growth
  • COMPREHENSIVE SUPPORT POLICY: The UC-200 is Fitted with 3/8″ Male Compression Inlet/Outlet Fittings & comes with a 36″ Long 3/8″ x 3/8″ Braided Stainless Steel Compression Hose. Have Non-Standard Plumbing or an Alternative Install in Mind (such as dedicated filtered water only faucet)? Contact Customer Support, We’ll Supply an Install Kit for All Non-standard Installations at No Additional Cost to You!


  • Fast Clean the Water
  • Easy to do Separation and Combination Filter
  • Good Customer Service


  • Not clear improve if the water source is not bad.

Buy it at

Express Water ROALK5D

The picture of Express Water ROALK5D:

The main features:

  • Energy in a glass – Alkaline water has up to 20% more oxygen than regular water. It even has antioxidants to help keep you going
  • Get what your body needs – Our Active Mineral Technology adds Calcium, Magnesium, Potassium and other minerals your body needs right in your water
  • The easiest change for a healthier life – Experience what water should taste like when we remove up to 99.99% of Lead, Chlorine, Fluoride, Arsenic, Bacteria, and more
  • Exactly what you need – Drink the healthiest water on Earth. All our filters are specially engineered to work together, producing the safest best tasting water you’ll ever drink
  • Don’t waste money on professional installation – Our quick and easy to understand design means you can install and understand everything about your system
  • Quality Guaranteed – Rest easy with our 1 year warranty on all Express Water Systems
  • Water when you need it – No need to mess with refilling or activating the system, automatically fills your water tank with high quality drinking water


  • Improve the Alkalinity
  • Easy to use


  • A little water waste

Buy it at

Home Master TMAFC-ERP

The Picture of Home Master TMAFC-ERP:

The Main Features:

  • A better RO system — Home Master Artesian Full Contact’s innovative design solves the most common problems associated with traditional RO systems
  • Highly pure water — its seven stages of filtration and enhancement remove up to 98 percent of chemicals, including chloramine, and other contaminants
  • Added minerals for great taste — patented Full Contact technology adds calcium and magnesium minerals twice during the purification process.
  • Built-in non-electric permeate pump — reduces water waste up to 80 percent and increases water production up to 50 percent. Made in USA.
  • Long lasting and easy-to-change filters — quick and painless filter changes require no wrenches; change just once a year or every 2000 gallons


  • All in One system
  • Can be used for 5 years!


  • A little noise from the tank.

Buy it at

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