Source:
Aluminum is an abundant metal in the Earth's crust, but it's solubility in water is so low that it is seldom a concern in municipal or industrial water systems. The majority of natural water contains from 0.1 ppm to 9.0 ppm of aluminum, however the primary source of aluminum in drinking water comes from the use of aluminum sulfate (alum) as a coagulant in water treatment plants.
The total dietary exposure to aluminum salts averages around 20 mg/day. Aluminum is on the USA EPA's Secondary Drinking Water Standards list with suggested levels of 0.05-0.2 ppm depending on case-by-case circumstances.
Treatment:
Aluminum can be removed from water by a cation exchange system (such as a water softener), but hydrochloric or sulfuric acid must be used for regeneration to remove the aluminum from the resin. While this is suitable for an industrial application, it is not recommended for domestic use unless it is in the form of a cation exchange tank (which Affordablewater.us does not offer).
Reverse Osmosis will reduce the aluminum content of drinking water by over 98%. Distillation will reduce the aluminum content of water by over 99%.
Check out our TFC-335 NSF Certified Reverse Osmosis System if you are looking to reduce aluminum in your water!
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