Compare Drinking Water Filters

There are several options available in the market when it comes to filtering your drinking water. Options include under counter water filtration systems, countertop water filtration, pitcher water filtration and faucet attachments. Below, we have compiled important information for you to consider when choosing a drinking water filter including a product by product comparison, filter contaminant reduction capabilities, installation requirements, and ongoing costs per gallon.

Reducing Contaminants in Drinking Water


When understanding a drinking water filter’s contaminant reduction capabilities, there are two important criteria to consider: NSF Certification and chlorine & chloramine reduction capability. First, make sure the filter you are considering is NSF Certified to Standards 42 and 53. The National Sanitation Foundation (NSF) is the most credible third-party testing organization and “NSF Certification” is considered the Gold Standard for third-party certification in the industry. NSF Standard 42 addresses chlorine, chloramines, taste, odor and particulates. Most filters that have a NSF Standard 42 certification pass chlorine tests, but not chloramines. Given that chloramines are used in 30% of municipalities it is important that you look for a chloramines certification in addition to chlorine. NSF Standard 53 addresses specific health-related contaminants, such as cysts (ex. Cryptosporidium and Giardia), lead, volatile organic chemicals (VOCs) and MTBE (methyl tertiary-butyl ether) that may be present in public or private drinking water. NSF Certification ensures the filter has been rigorously tested and confirmed by NSF to fulfill the manufacturer’s claims for these standards. Second, check the filter manufacturer’s product data sheet to get the full story of contaminants they actually reduce or remove. Chances are good that if a filter reduces chlorine, chloramines, lead, mercury, VOCs and MTBE, it most likely reduces more as well. VOCs (Volatile Organic Compounds), which include a large number of known carcinogens, like chloroform and benzene, are difficult to reduce through most purification processes, which make it hard to pass the NSF 53 Certification test.

Installing a
Drinking
Water Filter

Most drinking water filter systems are easy to install and pitchers require no installation at all. Filters that attach to or mount on your faucet are easy to install and are compatible with most standard faucet fixtures. Under counter and reverse osmosis systems require an extra hole in your sink for an additional drinking water faucet. Luckily, the holes made for drinking water faucets and soap dispensers are standard in size. If you have a sprayer or soap dispenser you don't use, you can remove them and use the existing holes for the drinking water faucet. If you don’t have any additional sink holes on your counter, you can have a plumber create a hole, which will typically cost around $100-$200. Most people will opt for the convenience of an under counter water filter if possible. Countertop water filters are an excellent alternative if the under counter water filter is not an option.

Cost of Drinking Water Filters

A quality drinking water filter should last for years. To ensure ongoing performance and efficiency, you will need to replace the filter cartridges on a regular basis. How often, depends on the drinking water filter system and the amount of water you use through the system. Once you determine the cost and frequency of filter replacement, you can use this information to calculate the cost of owning a drinking water filter and your cost per gallon of clean, filtered drinking water. You should take into account the initial price of the system and how often you need to change the filter (filter capacity) to calculate your first year and ongoing cost of ownership.

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PROS
Pro
undercounter filters
A
  • Best long-term solution for in-home water filtration
  • They typically have the most robust and effective filtration technology — nearly all reviewed have high capabilities
  • They integrate seamlessly into your kitchen — the only thing you see is a faucet, and the rest is hidden below the counter
countertop filters
A-
  • Superior filtration technologies use water pressure to force water through denser, more effective media
  • Good contaminant removal resulting in better tasting and healthier water
  • Water always available at your tap
reverse osmosis filters
C
  • Reverse Osmosis systems are good for specific contaminant issues, like heavy metals, nitrates or bacteria
pitcher filters
D
  • Easy to buy
  • The initial purchase price is low (usually $40 or less)
  • Typically remove chlorine, which improves the taste of water
  • You can take them anywhere
CONS
Cons
undercounter filters
A
  • They typically are a bit more expensive, both in initial price and cost per gallon
  • Installation is more involved. Most require a hole to mount a faucet (you can replace a sprayer or a soap dispenser, otherwise you will have to drill one), and install with a simple Y-splitter connection.
countertop filters
A-
  • Only work with specific, simple faucets — typically not vegetable sprayer faucets
  • Can be bulky or unsightly attached to faucets; countertop products take up counter space
  • One size fits all, and typically cannot be customized to tackle additional contaminants
reverse osmosis filters
C
  • Do not remove VOCs
  • Remove all dissolved solids, including healthy calcium and magnesium
  • Waste water during treatment process
  • Require a storage tank under your sink and a waste water line
pitcher filters
D
  • Do not last very long: typically 40 gallons or less
  • Replacement filters are expensive on a cost per gallon basis: higher long-term cost
  • The gravity-fed filtration is slow and ineffective for contaminant removal
  • Water is not as healthy as other options

Countertop/Faucet Water Filters


Grade A+

Aquasana - AQ-4000

Full system NSF Certified to Standards 42 and 53. Certified to reduce >97% of chlorine and over 60 other contaminants. Long filter life lasts up to 500 gallons or 6 months. Little maintenance require. Easy installation and replacement.

Cost Performance
Gallon
12¢
Certified
NSF 42/53
Replacement
$50.99
Capacity
500
System
$124.99
Contaminants
+60
Key Contaminants Removed
Other Benefits: 90-day satisfaction guarantee, 1 Year warranty, Eco-friendly cartridges

Grade C+

Brita - Complete Faucet Filter

Full system NSF Certified to Standards 42 and 53. Certified to reduce 97% of chlorine and 60 other contaminants. Short filter life lasts 100 gallons. Frequent filter changes drive up ongoing cost. Bulky on faucet design takes up sink space.

Cost Performance
Gallon
15¢
Certified
NSF 42/53
Replacement
$13.30
Capacity
100
System
$29.99
Contaminants
60
Key Contaminants Removed
Other Benefits: 30-day satisfaction guarantee, 90-day warranty

Grade C-

PUR - Advanced Faucet Filter 3700B

Full system NSF Certified to Standards 42 and 53. Certified to reduce 97% of chlorine and over 60 other contaminants. Short filter life lasts 100 gallons. Frequent filter changes drive up ongoing cost. Bulky on faucet design takes up sink space.

Cost Performance
Gallon
21¢
Certified
NSF 42/53
Replacement
$13.57
Capacity
100
System
$34.99
Contaminants
61
Key Contaminants Removed
Other Benefits: 1 Year warranty

Please note that VOCs include: 2,4,5-TP (Silvex); 2,4-D; Alachor; Atrazine; Benzene; Bromodichloromethane; Bromoform; Carbofuran; Carbon Tetrachloride; Chlorobenzene; Chlorodibromomethane; Chloroform; Chloropicrin; dibromochloropropane(DBCP); O Dichlorobenzene; P Dichlorobenzene; 1, 2 Dichloroethane; 1,1 Dichloroethylene; cis-1,2 Dichloroethylene; trans 1,2 Dichloroethylene; Dichloropropane; Dichloropropylene; cis-1,2-dichloropropylene; Dinoseb; EDB; Endrin; Ethylbenzene; bromochloroacetonitrile; dibromoacetonitrile; dichloroacetonitrile; trichloroacetonitrile; 1,1 dichloro-2-propanone; 1,1,1 trichloro-2-propanone; Haloacetonitriles; Haloketones; Heptachlor; Heptachlor Epoxide; Hexachlorobutadiene; Hexachlorocyclopentadiene; Lindane; Methoxychlor; Pentachloropheno; Simazine; Styrene; Tetrachlorethylene; Tetrachloroethane; THMs/TTHMs; Toluene; Tribromoacetic acid; Trichlorobenzene; 1,1,1 Trichloroethane; 1,1,2; Trichloroethane; Trichloroethylene; Xylenes.

All performance claims and pricing were taken from publicly available information. If you find information that is inaccurate, please send the correct info with supporting documentation to info@waterfiltercomparisons.com, and we will address any errors. Product grading is based on the following criteria: System Price, Cost per Gallon, Contaminants Removed, System Certification, Capacity, Eco-friendly.
1. Pricing is subject to change and is accurate as of the date this chart was last updated. Cost per gallon is calculated as replacement filter price/capacity.
2. Not all contaminants will be listed in chart
Manufacturer data last updated February 28, 2013.