Why do you need the best water filters to protect you and your family?
Drinking water the way nature intended it to be has never been more difficult. Over 2,000 contaminants threaten our water supply on a daily basis. The water that our families drink, cook with and bathe in can be a direct source of harm.
Buying water filters is no longer an option, it's a necessity!
Bottled water vs tap water
Bottled water is not the answer either. The bottled water industry contains far fewer regulatory controls than public water supplies. Bottled water suppliers are not required to reveal the source of their water, what contaminants the water might contain or even how their bottled water was filtered.`
Price is not a guarantee of quality
Not all filtration systems are equal. Price should not be the only factor to consider, there are advantages and disadvantages to all filtration systems.
We at best water filter reviews and comparisons provide you with all the information you need to make an informed decision. The pros and cons of all the various water filtration systems are explained.
Home water filter systems
Different water filtration systems will remove different types of contaminants. The more advanced filtering systems will often use multiple technologies to rid your water of a variety of contaminants
The best filters are certified by American National Standards Institute (ANSI) and the National Science Foundation (NSF)
For more in-depth details on different filtering systems check out our buying guide to all the different types of Water Filters for Home Use. A quick introduction to the certifications of various water filters for the home and what they filter is provided below.
|Technology Certification||What Does It Do?|
|Water Filters (NSF/ANSI 42 & 53)||The certification on the left applies to water filters that use a process that causes liquids, gases, dissolved or suspended matter adhere to the surface of, or in the pores of, an adsorbent medium. Carbon filters use this process.|
|Water Softeners (NSF/ANSI 44)||The certification on the left applies to water softeners.
These systems use a cation exchange resin, regenerated with sodium chloride or potassium chloride. 'Hard water' is caused by Calcium and Magnesium. Water softeners reduces the 'hardness' of the water by reducing the amount of Calcium and Magnesium in the water.
The Calcium and Magnesium ions are replaced with Sodium or Potassium ions.
|Ultraviolet Water Treatment (NSF/ANSI 55)||
The certification on the left applies to water that is treated by ultraviolet light.
This method of water treatment uses ultraviolet light to either 1. disinfect the water or 2. to reduce the amount of heterotrophic bacteria present in the water.
|Reverse Osmosis Water Filters (NSF/ANSI 58)||
This certification applies to filtration systems that employ a method known as reverse osmosis.
This method forces the water through a semi-permeable membrane. This results in the water changing from a more concentrated solution to a more dilute solution as it deposits contaminants on the membrane.Many reverse osmosis filter systems use pre- and post-filters along with the semi-permeable membrane, for greater efficiency.
|Water Distillers (NSF/ANSI 62)||
This certification applies to water distillation filtration methods.
This method of filtering water heat the water until it reaches boiling point. The boiling water creates vapor and when the vapor condenses it is then collected.
This means that many of the contaminants including heavy metals are left behind.
However, some sources of contamination, such as volatile organic chemicals, that easily change into gases, can be passed through with the water vapor.