Water Filters Buying Guide

Water filters can improve the smell and taste of water and remove contaminants

Water Filters - Buying Guide

There are many different water filters to choose from, and they do not require a major renovation or big investment of time and money. This guide will help you choose the best water filters for your home.

Need help installing your new water filtration system? Let us do it for you. The Home Depot installs major brands of water purification systems including water filters, whole house water softeners, water treatment systems and more in order to effectively improve your home's water quality.
Tip: If you are looking for a water filtration system that purifies your water, check the manufacturer's labels carefully. While water filters remove common contaminants, the best water purifiers eliminate bacteria and viruses.


Types of Water Filtration Systems

Whether you want to install an entire home water filtration system or simply start using a water filtering pitcher, this table details the best water filters you can choose from for your home.

System Description Key Characteristics
  • A whole house water filter connects to the main water supply line within the house and filters all water throughout, including faucets, showers, washing machines and dishwashers.

  • • Available filter types include pleated, poly spun and carbon wrap
  • • Cost-effective method for filtering all water in the house

  • Filters water through a very fine, semipermeable membrane to remove contaminants.
  • Provides bottled water-level water quality.
  • A popular filtration technique used in water purifiers.

  • • Often used in conjunction with carbon filters
  • • Slower filtration process
  • • Creates around 5 gallons of waste water for every 1 gallon filtered
  • • Requires regular cleaning and filter replacement

  • Installs below the sink and filters water before it reaches the faucet.

  • • Filters water going to a specific faucet
  • • Filter cartridges tend to last longer than faucet mounted 
  • • May have multiple filter cartridges designed to remove specific types of contaminants

  • Screws onto faucets so you can quickly filter large amounts of water without installing new plumbing.

  • • Replaces the faucet aerator
  • • Takes up countertop space 
  • • Doesn't fit all faucets

  • Treats water as it passes through the faucet, improving it for drinking, cooking and washing.

  • • Require no plumbing connections 
  • • Economical and easy to install 
  • • Take up little space

  • Uses a carbon filter to reduce contaminants from water. Sizes range from around 8 cups to a gallon.

  • • Easily portable 
  • • Economical and easy to maintain 
  • • Take several minutes to filter water

  • Provides filtered water for ice makers and in-door water dispensers in refrigerators.

  • • Some include an automatic shutoff valve for easy replacement 
  • • Use charcoal filters 
  • • Included in some new refrigerators

  • Reduces chlorine, bacteria and fungus in the shower head.

  • • Compact, flexible design installs easily in most showers

Shop by Water Filter Contaminants

Find the best water filter to eliminate specific contaminants.

Your tap water might have one of these contaminants. Why filter these contaminants out of your water.


Affects the taste and smell of water,
can cause health issues

Shop Water Filters to Eliminate Bacteria



Has unpleasant taste and smell,
can cause health issues

Shop Water Filters to Eliminate Chlorine



Excess amounts can cause health issues

Shop Water Filters to Eliminate Copper


Is good for your teeth, though you might want to control your exposure

Shop Water Filters to Eliminate Fluoride



Can stain toilets and bathtubs,
might have metallic taste

Shop Water Filters to Eliminate Iron



Can cause health issues, especially in children

Shop Water Filters to Eliminate Lead