Hi O'Tink, I am not enough of a biochemist to address your question directly...just that (I am guessing) the human body is well adapted to and even needs salt, NaCl - while the sodium hypochlorite (NaOCl) aka BLEACH used to treat drinking water, would have totally different physiological effects...
I think of this in terms of the thyroid, but am not an expert here; I just learned enough for my own use. I was studying all this something like forty years ago. YOU have an inquiring mind, and not sure how much you might want to pursue all this, but the reference I used most was the work by Max Gerson, M.D.; German-born Jewish, he escaped to the USA when he saw the Holocaust coming. (His 11 or so siblings did not believe what was coming, and they all perished.)
Anyway, first he was bringing TB patients to a cure with his dietary methods, then he learned that cancer also would often respond. His book was CANCER; A HISTORY OF 50 CASES (something like that). Anyway, before WWII he was curing something like 50% of cancer patients pronounced medically terminal, hopeless! He perceived a strong reciprocal interaction between liver and thyroid, and focused his healing efforts on restoring that axis.
Quality of drinking water was VERY important, as was quality of foodstuffs, organically grown even biodynamic (Rudolph Steiner). I myself won't be going back to those kinds of studies, but still keep the rudiments in my own life to this day...tremendous admiration for Dr. Gerson and other such pioneers. (Caveat: attacked and discredited by conventional medicine.)