Water Filtration Comparison

This article compares tap water against water filtration systems currently on the market. The three systems compared are distillation, reverse osmosis, and solid carbon filtration systems.

Water Filtration Systems Comparison
Contents Distillation Reverse
Osmosis
Solid
Carbon
Tap
Water
Bacteria Removed Removed Probably Unlikely
Chemicals Some Removed Removed Added
Chlorine Removed * Removed Added
Cryptosporidium  Removed Removed Removed  Probably
Disinfection
Byproducts
Removed Removed Removed Added
Fluoride Removed Removed Not Removed Added
Giardia Removed Removed Removed Probably
Heavy Metals Removed Removed Probably Some
Lead Removed Removed Some Not Removed
Mercury Removed Removed Some Some
Minerals Removed Removed Not Removed Some
Nitrates Removed Removed Not Removed Not Removed
Pesticides Removed Removed Removed Not Removed
Radium Removed Removed Not Removed Not Removed
Radon Not Removed Not Removed Removed Some
Solvents Not Removed * Removed Probably
Viruses Removed Removed Not Removed Removed
*Removed if Carbon also Used

Although technology is constantly advancing, the three filtration systems compared all have drawbacks. Here they are

  • Distillation is slow, wastes some water, and requires electricity to operate. It also removes soluble minerals and trace minerals, and it is not good to drink distilled water for long periods of time because of the lack of minerals in distilled water.
  • Reverse Osmosis requires about three times as much water as it processes. So, it wastes water.
  • Solid Carbon is not as effective as distallation or reverse osmosis in eliminating toxins from water, although it is still better than tap water. 

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