Do any of you boil your cats water?

[ducman69]

Correct, you won't find any such information as there is no peer-reviewed scientific documentation that proves that distilled water "leaches" any type of mineral or tissue material from the body or its cells.    There are real medical studies that show that North American tap water contains healthy minerals that are vital.  Here is one as an example: http://www.ncbi.nlm.nih.gov/pubmed/11318912     However, the mineral content is so low as to provide only a tiny fraction of intake compared to food sources (even for the hardest water accounts for only 5%), and a typical Western diet is varied enough that malnutrition from such a small contribution is simply not an issue.   In other words, if you want more calcium in your diet for example don't drink ten gallons of hard water, drink a small glass of milk, have a cream cheese bagel, or take a multivitamin.

Reverse osmosis filters (the kind so many have under their sinks) provide nearly as pure water as distilled, which are commonplace in Western society and would be subject to lawsuits from greedy lawyers if there was even a tiny shred of evidence it caused any harm, and the entire United States Navy drinks nothing but distilled water.

Cliffs Notes: North American tap water is of high quality and good for you, but if there is a taste issue (perhaps even from your own home's plumbing) or its too hard (leaving deposits on your cat water fountain for example), there is certainly no issue with purification as demonstrated by REAL medical authorities below. 

"To the best of our knowledge, there would not be any adverse health effects from the continued ingestion of distilled water."

American Medical Association; Division of Personal and Public Health Policy; Jack A. Bell - Assistant Director

"Distilled water should be used if the usual water supply(tap or bottled) contains more than 20 mg. of sodium per liter."

American Heart Association

"The body's need for minerals is largely met through foods, not drinking water."

American Medical Journal

"Distilled water is safe to drink and should have no adverse effects on your health. Distillation merely removes most of the dissolved materials, which are found in all natural waters."

U.S. Army Health Services Command; Major General, Commander - Medical Corps

"There is nothing about distilled water that would make it harmful for the body. It may be helpful to remember that distilled water is the only water available for crews of Naval vessels at sea."

United States Department of Agriculture

Real authorities backing up official statements in writing vs a handful of people fear mongering trying to sell books or marketing overpriced spring water; not really a debate IMO.