
Water filters can be a great way of improving the quality of your water and reducing the amount of plastic that you use. Before you make a purchase, it is important to fully understand the advantages and disadvantages of each type of water filter.
Best Water Filter Consumer Reports: A Few Choices
The first thing to consider when buying a water filter is the contaminants it's designed to remove. Some filters can only remove a limited number of impurities (e.g. lead), while others can deal with a larger range. If you don't know what you want out of your water, it is a good idea read your local water report and do some research on any possible contaminants.
Countertop: A countertop is a popular option for filtering large amounts without plumbing. It is less likely than pitchers and faucet-mounted models to clog, but it can be messy on your countertop. It also isn't recommended for people who are immunocompromised, as they could be exposed to germs if the water they drink doesn't pass through the filter.

Faucet mount: This faucet mounted filter is great for busy people or those who don’t have time to handle plumbing. They attach directly to your sink, so they are easier to install than under-counter or pitcher models. These models are often less costly than the under-counter varieties and include an indicator lamp that will let you know when it's about time to replace your filter.
The Pur Plus Faucet Mount Filter has been a popular choice because it's easy to use and filters over 70 contaminants, including mercury and lead. The filter comes with a carbon block that improves taste and odor, too. It's an ideal choice for renters or anyone who doesn't want to do more extensive plumbing work.
Some options for water filters
The Express Water Whole House System can improve the taste and smell of your drinking water without removing most contaminants. It is an affordable solution that will increase the quality throughout your home. It features a GAC (granular activated carbon) and sediment filter that eliminates dirt, rust and large particles.
This filter is a great deal because it's easy to use and has a half-year lifetime. It has a high filtration rate and is made in the USA.

APEC Free Drinking Water Filtration Systems: A Better Option For Immunocompromised Individuals
If you are immunocompromised, it's a good idea to look for a water filter that is NSF certified and can remove parasites such as Cryptosporidium. These germs can cause infections and should be avoided by anyone with compromised immune systems, like those who have been diagnosed with cancer, AIDS, or transplants.
Amazon has over 20,000 reviews for this system. It uses a two stage filtration process that includes reverse osmosis filters to remove parasites as well as other harmful microorganisms. It's also easy to install and runs quietly. APEC also donates the filtered waters it produces to those who require it. It's an alternative to bottled waters that contain high levels of pathogenic bacteria or parasites.