QUOTE(shawn9838 @ Oct 6 2014, 09:51 PM)
I have a question here. Is RO water the best choice for drinking? This is because I heard a lot of people talking about it. Just curious..hehe..
RO is not the best choice for drinking.
It is not the cleanest, although they try to claim it is. Distilled water is the cleanest and purest.
When come to drinking water, we have to know the following:
Q1) it is clean enough, how clean is clean?
Q2) it is suitable for human to drink?
Answer:
Q1) Water should be free from heavy metal and VOCs, in this context RO water done a good job on heavy metal but fail short with VOC [Volatile Organic Compound], whilst also remove the beneficial minerals like calcium and magnesium.
Q2) Our blood pH is between 7.35-7.45; RO water without minerals will have a lower pH, hence our body need to adjust the water to around pH 7.35 before the water can enter our blood. To do this, our body will extract calcium from our bone, hence prolong consumption of RO water will cause calcium deficiency.
RO water however (as mentioned by chickytien) is used by dialysis patients, some kidney transplant patients can only drink distilled water.....those are people with special needs....not everyone is suitable to drink RO or distilled water.
Even WHO has a write up on telling people not to drink too much RO and distilled water.