A 15-year study found that the risk of cognitive decline and dementia were higher for people who consumed large amounts of aluminum in their drinking water. 

Waters containing Silica had a beneficial effect by removing harmful Aluminum.

Silica and Alzheimer's
Magnesium and Calcium in drinking water

Both Magnesium and Calcium are essential for the human body. Calcium is part of the bones and teeth. In addition it plays a role in neuromuscular excitability (decreases it), good production of the myocardial system, heart and muscle contractility, intracellular information transmission and blood coagulability.

The absence of these important minerals in deminieralized drinking water can result in serious health problems

Correlation between cardiovascular disease mortality in males and drinking water magnesium levels, based on German (Teitge, 1990), Swedish (Rylander et al, 1991)

This Texas and Iowa study used data from the National Birth Defects Prevention Study and found that higher water nitrate intake was associated with several birth defects in offspring

Nitrate intake and birth defects
Water being poured into a glass

A large study of children in Texas and Iowa found that babies whose mothers consume nitrates in drinking water have a higher risk of spina bifida, cleft palate, and other birth defects.

Salicylic acid has been used to treat various skin disorders for more than 2,000 years. The ability of salicylic acid to exfoliate the stratum corneum makes it a good agent for peeling. In particular, the comedolytic property of salicylic acid makes it a useful solution for patients with acne

Woman touching her face