Water Filters
Water filtration devices come in many different shapes and sizes. There are carafes(pitchers), units that attach directly to the faucet or sit on the counter next to the
sink, systems that install inside or behind a refrigerator or those that attach to the
plumbing under the sink. No matter where the filtration system installs, there’s a
good chance that it uses a filter media that will need to be replaced on a regular
basis.
Why Do Filters Need to be Changed?
Many filtration systems today use carbon, charcoal, or a blend of filter medias to
help reduce impurities. These systems generally reduce contaminants in one of two
ways. First, some contaminants are filtered mechanically, meaning they are
physically large enough to be trapped in the pores of the filter. Other contaminants
adhere to the surface of the filter media. Eventually, the surface area of the filter
media becomes filled and no more contaminants can be adsorbed. Or, the pores of
the filter become so clogged with debris that water is unable to move through the
filter effectively.
While the latter is easy to spot, since the flow rate of the water being produced by
the system slows dramatically, it’s not as easy to tell when the surface area of the
filter media has become full and needs to be changed.
How Often Do I Need to Change My filter?
Manufacturers of home filtration systems frequently establish “service cycles” for
their products. The service cycle may be an estimate of the number of months that
a cartridge will last in the average home or for a specific number of gallons. While it
isn’t possible to certify that a filter cartridge will be effective against particulate
matter (i.e. sediment) for a specific time frame, it is possible to verify if a filter
cartridge reduces chemicals, lead, and many other impurities for the number of
gallons promised by the manufacturer.
Failure to change the filter cartridge at the end of the manufacturer’s designated
service cycle could result in your family drinking water that is no longer being
adequately filtered and treated.
Choosing the Right Replacement Cartridge
Filter cartridges are not necessarily universal. While a non-certified cartridge may
look similar in size and even appear to fit inside the housing of your water treatment
system, even the smallest size difference could allow water to go around the
cartridge rather than through it. In addition, non-certified filter cartridges may not
be of the same quality as the manufacturer’s suggested replacement, which could
result in the loss of contaminant reduction capabilities or the cartridge possibly
introducing impurities into the water supply if it doesn’t meet minimum material
safety standards.
Since water filtration systems are tested for material safety and performance using a
specific cartridge inside a specific housing, it’s important to always use the correct
replacement cartridge recommended by the manufacturer of your system. By using
the right cartridge, you will ensure you are helping to protect the health and safety
of your family. 1 year ago