Your Guide To Buying A Home Water Filtration System


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These days more than ever, we are spending more and more of our time at home. This means that the water supply in your home is where you will get the vast majority of your water. But how do you know if it's safe to drink? Even if your water comes from the water treatment plant, it contains many chemicals and other contaminants that you may not be aware of.

Before buying a whole-house filter, you first need to find out which water contaminants are present in your home’s water supply. To do this, you can have your water tested by a professional, ask for a water report from your utility company, or buy a home water test kit. You can also check common water contaminants for your zip code on the Environmental Working Group’s Tap Water Database.  Learn more about the water you drink, cook and bathe in by reading our 'Is Northern Virginia Tap Water Safe' blog we also encourage you to read our 'Bottled vs. Tap Water' blog. 

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Northern Virginia homeowners have many options for their home water filtration systems. It is important to have both safe drinking water and water free of heavy metals, minerals, and chemicals that can cause damage to your plumbing and appliances.

If your water looks, tastes, or smells bad, having a whole home water filtration system installed can supply you with clean, healthy drinking water at every tap in your home.

Your home water filtration system will need to be chosen carefully so that it removes the types of contaminants unique to your water supply. Water filtration systems can correct water hardness (by filtering out minerals), water turbidity (by filtering out suspended dirt or other particles), and water taste (by filtering out metals and chemicals like chlorine). Your home's water supply may also contain contaminants that you can’t see or taste but can be harmful to your health. Whole home water filtration systems can eliminate any type of harmful contaminant that your water supply has.

Common Water Contaminants in Fairfax County Water Supply - What is in your water?Fairfax Water Quality

Fairfax Water Contaminants


Many Northern Virginia residents have treated tap water, but a home water filtration system may still be necessary. If your home is supplied by tap water, you can check the Safe Drinking Water Information System Reports developed by the Environmental Protection Agency (EPA) to find reports about tap water quality.

Common contaminants found in northern Virginia tap water include:

  • Arsenic
  • Bromate
  • Bromochloroacetic acid
  • Chloroform
  • Chromium
  • Nitrate
  • Radium
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The types of contaminants found in well water are wider and vary from home to home. These can include:

  • Sediment
  • Microorganisms: bacteria, viruses, and other parasites
  • Iron
  • Nitrates and nitrites
  • Heavy metals: arsenic, antimony, cadmium, chromium, copper, lead, selenium
  • Organic chemicals
  • Uranium and radium


AirPlus can help determine the best home water filtration system for your home's water supply. Give us a call at (571) 470-7235. Our experts will evaluate your needs for your filtration system and help you improve your home water quality.


Your home water supply can contain harmful contaminants like chemicals, pesticides, heavy metals, sediments, and bacteria. Treated water from cities and towns removes many harmful substances, but they don't remove everything.

Whole home water filtration systems take the water that enters your home and removes contaminants before they reach your house’s main inlet, keeping water throughout your entire home safe and clean.


A Home Water Filtration System can help purify city water, public water & well water. 
A whole home water filtration system can cost anywhere from a few hundred to several thousand dollars, depending on its capacity, brand, and your unique water filtering needs. On average, a whole home water filtration system can range from approximately $5,000-$10,000 including installation labor &materials. But every job is different and our systems are custom designed and built to meet each home's specific water filtration needs.

More information home water filtration system cost:

  • Average total price: $5,000 - $10,000
  • Carbon filter system: $2000-$4,000
  • UV disinfection system: $800-$2,000


Because home water filtration systems filter all the water coming into your home, they provide benefits beyond clean drinking water.

Safe, tasty drinking water 
In addition to removing harmful contaminants, water filters remove substances that cause your drinking water to taste bad, like lead and chlorine. A water filtration system in your home provides unlimited access to safe drinking water that tastes good. Water that has been filtered will always taste purer, and will have a balanced pH so you are not drinking water that is too acidic.

Reduce wear and tear 
Contaminants in your drinking water can be hard on your plumbing and appliances. Heavy metals, minerals, and chemicals in your water cause damage to your pipes, water dispenser, refrigerator, garbage disposal, dishwasher, washing machine, and more.

Reduce residue 
A whole house water filter will reduce the crusty, white residue that builds up in your shower and faucets by removing excessive minerals from your water supply. Buildup and deposits in your pipes will also be reduced by filtered water.

Improve skin health 
Skin conditions can be aggravated by minerals and other contaminants in unfiltered water. Filtered water will improve your skin and hair health.

Protect the Environment 
50 billion plastic water bottles were bought in the U.S. last year. Most ended up in a landfill. Using a water filtration system instead of buying bottled water will reduce plastic waste and can also save you money.


Each type of water filtration system varies in cost and is effective for the removal of different types of contaminants. The best home water filtration system for your home will depend on what you need to filter out of your water.

Install a home water treatment system by Lancaster Water Group and enjoy all of the benefits of filtered, clean water in your entire home.

Reverse Osmosis Water Filtration System for Home

Reverse-osmosis systems use water pressure to force water through a semipermeable membrane while keeping impurities from passing through. They provide all the benefits of carbon filtration. They can remove sediment, minerals, bacteria, chemical contaminants like copper and lead, and hard metals, such as calcium, arsenic, and mercury, but they will not remove certain herbicides and pesticides.

Reverse osmosis water filters are the only water filters that will actually remove bacteria, though UV filters will still disinfect water by killing bacteria. However, reverse osmosis water filtration systems are not the most cost effective option. As well as being the more expensive option for home water filtration, they waste a lot of water. For every filtered gallon, up to 25 gallons are wasted.

Charcoal Water Filtration System for Home

Charcoal, or activated carbon, filters are the most popular home water filtration system. Carbon filters absorb and reduce contaminants such as chlorine, pesticides, and common minerals and sediments that affect water taste and odor. Carbon filters also reduce bacterial cysts, lead and other biological impurities. However, they’re not particularly effective if you need to remove heavy metals, such as nitrates, sodium, and fluorine from your drinking water.

Ionization Water Filtration (Water Softeners

Ionization systems ionize, or reverse the charge, of the minerals in your water and then remove them. Water softening systems use ionization water filtration.

UV Water Filtration Systems for Home

UV, or ultraviolet light, water filtration systems kill bacteria, parasites, and viruses in your water and are especially important if you have well water. However, they are not good for the removal of mineral contaminants, such as lead, calcium, and arsenic.


Distillation water filtration systems remove contaminants by boiling water and collecting it again as steam. They are good for removing biological contaminants and chlorine. However, any contaminants in your water with a lower boiling point than water won't be removed.

Ceramic Filters

Ceramic filters trap solid particles but allow water to pass though. This makes these filtration systems effective for bacterial removal. They are long-lasting and are sometimes a more economical choice than other water filters, but they won't remove viruses or any chemicals form your home water supply.


Point of Use vs. Whole Home Water Filtration Systems

Point of use water filtration systems filter your water at only one plumbing source, such as your kitchen sink. While these water filters will meet the needs of some homeowners, if you want to address water quality issues throughout your home, you will need a whole house water filtration system.

A whole house water filtration system is installed along your main plumbing supply line and treats all of the water that comes into your home before it makes its way through your home’s plumbing system.


Many water systems in Northern Virginia contain harmful contaminants. Whole home water filtration systems remove these contaminants, including sediment and bacteria, as well as soften your water. AirPlus can help install the perfect home water filtration system for your home depending on what needs to be filtered from your water. Here is a link for more information to help you decide if a home water filtration system is right for you.

Home water filtration systems are great for drinking water, showers, and cooking, as well as protecting your plumbing and appliances. 
Does your home’s water have a bad taste or leave behind residue in your sink or shower? A home water filtration system cleans water from every source in your home and will keep your family and your appliances safe.


Not all households need the same whole house water filter, since different filters will remove different types of contaminants. However, there are a few things you should look for no matter which kind of system you choose:

NSF Certification

The National Sanitation Foundation (NSF) is an independent and accredited organization that tests and certifies food, water, and consumer products to improve public health. An NSF seal on a home water filtration system ensures that it removes the waterborne contaminants that it claims to.

Filtration rate

The filtration rate of a water filtering systems is the amount of water that your system is able to treat each day. You should always make sure that your system's filtration rate is high enough to meet your household’s daily water consumption.


Be sure to ask about your home water filtration system's maintenance needs before you buy. Most systems will need filter changes at specific intervals, such as every every six months to one year. Keeping up with your maintenance will allow your system to operate at its best throughout its years of service in your home.



A sediment filter will remove any visible residue, like dirt, dust, or rust from your drinking water. It will also fix cloudy water. A sediment filter is an essential part of your water filtration system because sediment will prevent other components of your home water filtration system from working, such as reverse osmosis systems and UV purifiers.

Acidic Water

An acid neutralizer will fix home water that is too acidic. Any water with a pH below seven is considered acidic, and can cause your plumbing fixtures to wear out prematurely. Acid neutralizers work by running your water though a filtration media such as calcite. The calcite dissolves in the water to raise the pH level, but it also raises the hardness in the water. For this reason, acid neutralizers are normally paired with a water softener.


Hard water can cause many problems, including limescale buildup, clogged pipes, inefficient water heating, and dry hair and skin. A water softener is needed when there are too many minerals in your water. Water softeners use an ion exchange process to remove hardness, or minerals, from the water.

Organic material

Ultraviolet water purification is the best method for killing any bacteria or viruses in your water. Disinfecting your water with UV light is simple, effective, and environmentally safe. While you can kill bacteria and viruses in your water by adding chemical disinfectants, additives like chlorine are harmful to your health. UV systems destroy harmful microorganisms such as E. coli, cryptosporidium, and giardia without adding chemicals or changing your water’s taste or odor.


Home water filtration systems are a necessary investment for your health and home. AirPlus is Northern Virginia's expert on installing, maintaining & servicing home water filtration systems. We offer high quality water filtration equipment for homeowners throughout the area. Our water quality experts can help test your water supply and guide you as you select a new whole home water filtration system.

Our skilled installation will enable you to tackle water quality issues in your home and protect your home water filtration system investment. Home water filtration systems should always be installed by a professional, since the warranty on most systems will be voided if they are not installed correctly.

AirPlus is an expert in designing systems throughout Northern VA to customers living in the cities below:

Service Areas

  • Alexandria, VA
  • Arlington, VA
  • Burke, VA
  • Clifton, VA
  • Fairfax, VA
  • Fairfax Station, VA
  • Falls Church, VA
  • McLean, VA
  • Springfield, VA
  • Tysons Corner, VA
  • Vienna, VA

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