Deciding which system works as the best water filter in a home will largely be a matter of opinion. However, when making the decision, knowing what to expect from a water filter can help to make tht decision more educated. The type of water filter one chooses will also depend on the type of problems one is having with the water and the quality of water he is willing and able to pay for.
Though cost is usually a factor, it is not the only factor in choosing the best water filter. Some inexpensive units filter out heavier particles suspended in the water. More expensive units claim to remove microbes as small as .01 microns (.00001 mm) in diameter. The most common technique used for such fine filtration is reverse osmosis technology.
Bacteria is another and often a more serious problem in water supplies. The best water filter systems deal with this, usually through ultra-violet light. If bacteria is a problem, a homeowner should not settle for a cheap filter system that only deals with sediment.
Do not assume that just because water comes from a deep well, it is automatically safe. All water should be tested. This is a regular requirement for city water systems but it should also be done for other sources of cooking or drinking water. Microbial materials can affect, not just the safety of the water, but also the appearance, taste, and odor. The best systems will deal with all these problems.
Peace of mind is often a factor in choosing the best water filter for a particular location. Some just feel better drinking filtered water no matter what. Others want the purest water possible for the least cost. It is even possible that a water source is so contaminated with bacteria that no filter system can make it safe. If this is true of a well, some have been able to clean it by pouring bleach into it, then pumping it out. For others, a new well will probably have to be sunk.
Odor in drinking water, often caused by excessive iron in the water, may or may not be a health threat. Simply filtering that water often will not remove that odor. Whether or not odor is a problem, an adequate filter will remove contaminants of .4 microns or more. However, the best water filters treat both sediment and bacterial threats.
Some have opted for a duel attack on their water problems by using both a water softener and filter system. When the minerals are removed first, the life of the filter cartridge can often be extended. What is the best water filter system? The answer to that can only be determined when the water is evaluated, and the minimum acceptable levels of contaminants is established.
The best line of activated charcoal filters we are aware of is the Berkey Filter. Whether you choose their Fluoride Filter or another model, each set of filters they ship with can be re-cleaned to purify up to 6,000 gallons of water.