Pure Water Can KIll You

Fact of the day #1

Drinking absolutely pure water can kill you. All the water we normally drink – from taps, from bottles, from the garden hose – contains impurities which affect a property of water called tonicity. This is the ability of a solution to draw or repel water from ajacent solutions when separated by a membrane. Solutions that are hypertonic gain water, while hypotonic solutions lose water. Drinking water, which we usually think of as pure, really contains a whole mess of salts and sugars which make it slightly hypertonic. They also give water its taste. The cytoplasm in the cells of your body also have a tonicity. So, when they are exposed to hypertonic solutions, the cells themselves lose water and shrivel up. When they are in hypotonic solutions, they gain water, swelling up and bursting like a balloon. Absolutely pure water -with no impurities at all – is the most hypotonic solution. So, if you drink enough of it, your cells will start absorbing water. This disturbs the balance of electrolytes (electrically conductive ions) in your body. This is most seriously a problem in the brain, where water poisoning can lead to brain damage, coma and even death.

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29 thoughts on “Pure Water Can KIll You

  1. I always had a feeling I shouldn’t drink the deionised water in the lab despite the fact it’s completely sterile! Surely drinking too much tap (‘ionised’) water does this to you too? (but you’d need to drink more I guess).. like some of those poor people who take ecstasy and then think they’re insanely thirsty and end up drinking tonnes and bursting their neurons..

    • From the moment water touches ones mouth it is not pure any more, definitely not pure in your guts and It will be absorbed by guts to the blood stream and Your kidneys urinate everything out reabsorbing good staff back. and bad stuff with excess of water you pie out from your body any fluid has lethal dose. Water is nutrient and purity increase waters function to absorb water soluble nutrients from your gut. In human guts live billions bacterias and some of them tap water kills. I definitely would choose H2O vs tap water. What is wrong with you people? Good stuff from your body does not drops out because you drink pure water. bacteria colony in your gut effects your mental process I get suspicious that some peoples cleverness are influenced by tap water =O) and tap water have no useful stuff in it. Just look what will left after distillation and if you want you can eat it. Ones in life you can eat anything ha ha ha ;OD

  2. This article is absolute nonsense and poorly explained. I’ve been drinking pure water (TDS of 1 ppm) for 28 years and have no illness whatsoever more to the point I’m never I’ll – the same goes for my family friends and thousands of customers all of whom drink pure water. Our natural source of water is rain not contaminated water from municipal treatment plants. If there were an ounce of truth in your article then we’d have had mass deaths everywhere north of Manchester where water measures 10-20 ppm TDS. My guess is that you are talking about 18meg water for lab use in which case you should explain your theory more precisely instead of scaremongering. The fact are different to how to describe them 12-15 meg water is perfectly safe to drink. If it isn’t why have millions of people who’ve drunk it for 35 years avoided illness? The answer is because it’s actually the safest water to drink and what we evolved in ( rain ) get you facts right before making stupid comments on the net

  3. Dude, rain water is contaminated by atmospheric elements.

    The article is talking about absolutely pure water, which does NOT occur naturally.

  4. Roger, funny you tell others to get their facts straight before publishing stupid comments….

    When this author discusses pure water, he is not talking about its source (rain versus tap), but rather its chemical composition. Rain water is certainly not harmful for you! But Roger, that is because it is just like the water you get from the tap; impure. From the level of intelligence you expressed in your comment, I know this may be a little hard for you to understand, but even though you can’t SEE things in your water, that doesn’t mean they aren’t there. There are (like the author expresses) a whole host of salts and minerals and even some bacteria in there. Who’d have thought! I should know, I worked in a water testing lab for a pharmaceutical company…

    What this article is talking about is WFI (water for injection) or RODI (Reverse-osmosis de-ionized) water. These types of water have been highly filtered to make them chemically pure (~100% H2O molecules) in order to be used in labs for pure chemical reactions and to make safe medicines. They are certainly NOTHING CLOSE to the chemical composition of rainwater, which has many, many more impurities.

    Does this help Roger?

  5. @Science Teacher…your message certainly helped me. So my question is, what would be good water to consume daily for anti-aging purposes?

  6. dear Science teacher – do you have a name?
    In reply to your comments, what it demonstrates is that you still don’t understand that RODI water is perfectly safe to drink. Water purified to circa 12-14Megohm is acceptable for WFI purposes and easily produced by a good RODI system and since I’ve drunk this water for 25 years it somewhat disproves your theory doesn’t it ?
    What you are in fact talking about 18.2Meg water or UPW that is produced using further levels of filtration over RODI including GTM ( gas separation membranes or contactors ) using nitrogen and a vacuum to pull out the gases that may certainly be in water naturally in the feed water.
    Incidentally rain isn’t naturally contaminated – all it holds naturally is small amounts of dust around which the rain droplet forms. Sure, Purity of rain is not absolute but it measures well under 20 ms. Forgive me correcting your comments about rain but it is only ever polluted by man made industrial output or air traffic and a small level of other gases present in the environment in which it falls. The difference from rain water to RODI is so small in fact that it would need to be measured in Megohm, further more if you start with rain water you don’t need all the pretreatment required up front if RODI.
    And yes I know because I build UPW plants that provide the water you used when you worked in a testing lab.
    So, given I am fully qualified to take about water purity and more importantly have drunk RODI water for 25 years and have no illness whatsoever but also have extensive evidence that RODI water does in fact reduce illness ( evidenced through a sample base exceeding 10000) and has cured many people of diseases including Crohn’s I think that the advice for people asking what to drink is that purified water using the RODI process is in fact one of the best pieces of advice we can give. It’s also benefits the environment because RODI has a 95% lower carbon footprint than bottled water.

  7. This article is nonsense. Water is not a significant source of electrolytes or minerals.

    Of you eat food and drink water the Bolus of water and food in your stomach will not be significantly different in terms of dissolved minerals and salts.

    Tap water is very close to pure. The salts and minerals in your gut are not changed in any significant way by water, rather by food.

  8. I am no chemist. I have never gotten an answer to my question which is” In electrolysis, when separating H2O, why does the water change color AND is it safe to drink it?
    Can anyone please help me by answering these question?i

  9. wtf u ppl have an iq of 1 m8. He is talking about 100 percent pure water and u idiots talk about rainwater? get ur head in the right place before making nasty and dumb comments

  10. Be careful of pure bore water. Many deep aquifers in some areas can actually contain water that approach ultra pure concentrations. The bores are sourced from rain water and are notorious for lacking in any type of mineral salt or nitrate concentration. Some articles also link this water to hyponatremic shock.

    If you have lived comfortably in the city on its water supply for many decades and move to the country and drink the bore water , you may think you are getting the benefit of purity, but after about 5 hours of drinking it you will suddenly
    start to feel really tired. (Your body is functionally dependent on city water)

    I would describe the feeling of drinking this type of water for weeks on end as a lethargic, groggy, sedated trance like, altered state of consciousness, often delirious in nature. Its really quite bizarre what this water can do you.

    I later had the bore water tested and it had no detectable levels of minerals, nitrates or trace elements, it was highly corrosive, very soft. I would generally avoid pure bore water unless you are washing your car with it. And while I had an adverse reaction to it, my neighbors were ok
    drinking it from similar locations and have had no adverse effects, even for decades. My reaction may be occurring because of the extreme physical exertion during the day, working outdoors, I was constantly replacing fluids and those fluids were dangerously pure.

  11. “They also give water its taste”

    Huh, I always knew water had a taste even though it’s supposed to be tasteless. Now you’ve got me wondering what truly pure water would taste like (or you know, not taste like).

    • I do not have a degree in biology but I can tell you that your body does not just purify water and throw it in the blood. It is kept at a certain level so your cells do not burst from too much water being absorbed. Your blood is meant to be as isotonic as possible and water poisoning is a real thing, look it up. If you drink enough water fats enough, you could die from it. You could drink even less of lab quality pure water. We are not talking about the Aquafina water you buy at Walmart. There is my rant for the day. But do correct me if I’m wrong, like I said I’m no college professor.

  12. OK this is nonsense. This article is garbage. I’m 14 and I know that even if the water is pure or not, it’s still going to be pure in the body when absorbed into the bloodstream, after getting filtered to the max. In fact, the point when you put in your mouth, its impure, due to saliva. Dumbass, are you smarter than an 8th grader? As shown in the article, of coarse not. You should go and *** yourself for such a stupid claim and for releasing false information.

  13. It is usually best to avoid extremes of diet. We evolved to drink impure water to a degree… so if in doubt err on the side of caution and drink ordinary water not ultra pure. Minerals in water play an important part in our health.

  14. A lot of stupid people in these comments who just assume they know it all.

    But, but, how can one drink pure water if it’s not going to be pure once it hits my saliva.

  15. The title may be misleading since lots of us are drinking water from anywhere. The water itself is no longer consider pure once it comes in contact with something. As water is from nature itself, there will always be impurities in it.

    Through research from internet, there’s this thing called “ultrapure water” the purest of all which is never safe for drinking as it’s corrosive and very soft( not gonna explain more since some post says about it).

    Water does not have any taste.
    Bitterness and other taste may have been aftertaste or something.

    By water poisoning, it only happens if you drink a large amount of water in a short period of time. It can cause the level of salt, or sodium, in your blood to drop too low. It’s a condition called Hyponatremia. It’s very serious, and can be fatal.

    As what others said about the article being poorly explained and some of it may have been false info. The title itself is already false which lead to people explaining from their experience in drinking water.
    With the article itself was not being elaborate clearly which leads to misunderstanding.

  16. This article is pure nonsense. If it was true, you could not drink rain water either, because it’s “corrosive and very soft”.
    What happens in your stomach, if you drink UPW, is that it’s mixed with a LOT of different electrolytes and the result is pretty identical to what happens if you drink any kind of drinkable water water.
    If you drink enough UPW, you will die, but it happens to be tha fact also for any other kinds of water, too.

  17. Hahahaha –

    Oh wait, you’re serious?

    HA! Drinking pure water is fine. You can electrolyse pure H2O and drink it without any adverse effects at all. This is exactly how astronauts get water to drink.

    If I had a BS meter, it would be broken.

    Seriously, where do you people come up with this stuff? If it’s not flat-earthers, it’s anti-vaxxers. If it’s not anti-vaxxers, it’s people like this…

  18. Stop teaching people this garbage. This is how pseudoscientific conspiracies get started. I’m in the science field as well and am currently a PhD candidate, I’m not pulling this out of my rear. You could drink pure water just like “regular” water, because it’s not pure anymore the moment it touches your mouth. The only difference is that if you were to chug too much water (as in the AMOUNT), the purified water would probably kill your cells quicker. This is obviously nothing to worry about unless you’re planning on drinking a lethal dose of water.

  19. this article is the most nonsensical thing I have ever read. Let me tell you a FACT. The astronauts who spend weeks and months on the space station drink water that is directly synthesized from hydrogen and oxygen, not impure in any way. Salt and sugar amounts are tiny in most forms of water and do not account for its taste generally. You are extremely off based on all of your tonicity assertions and this is not experimentally supported. Please stop spreading nonsense to gullible internet consumers.

  20. This is rubbish. Your cells have active mechanisms to maintain tonicity. Pure water will not harm you; that’s a silly superstition. Astronauts on the Space Shuttle and the lunar missions drank absolutely pure water straight from the fuel cells and suffered no ill effects.

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