I would just be careful with reverse osmosis water as it's extremely powerful as a diluent. Too much RO water will cause health issues regardless of anything you are taking to counter it.
From the WHO
http://www.who.int/water_sanitation_health/dwq/nutrientschap12.pdf
"Results of experiments in human volunteers evaluated by researchers for the WHO report
(3) are in agreement with those in animal experiments and suggest the basic mechanism of the
effects of water low in TDS (e.g. < 100 mg/L) on water and mineral homeostasis. Low-mineral
water markedly: 1.) increased diuresis (almost by 20%, on average), body water volume, and
serum sodium concentrations, 2.) decreased serum potassium concentration, and 3.) increased the
elimination of sodium, potassium, chloride, calcium and magnesium ions from the body. It was
thought that low-mineral water acts on osmoreceptors of the gastrointestinal tract, causing an
increased flow of sodium ions into the intestinal lumen and slight reduction in osmotic pressure in
the portal venous system with subsequent enhanced release of sodium into the blood as an
adaptation response. This osmotic change in the blood plasma results in the redistribution of body
water; that is, there is an increase in the total extracellular fluid volume and the transfer of water
from ery
throcytes and interstitial fluid into the plasma and between intracellular and interstitial
fluids. In response to the changed plasma volume, baroreceptors and volume receptors in the
bloodstream are activated, inducing a decrease in aldosterone release and thus an increase in
sodium elimination. Reactivity of the volume receptors in the vessels may result in a decrease in
ADH release and an enhanced diuresis. The German Society for Nutrition reached similar
conclusions about the effects of distilled water and warned the public against drinking it (7). The
warning was published in response to the German edition of The Shocking Truth About Water (8),
whose authors recommended drinking distilled water instead of "ordinary" drinking water. The
Society in its position paper (7) explains that water in the human body always contains "