Fluorosilicic (Hydrofluorosilicic) Acid: The Silent Killer in Drinking Water

Authored or posted by | Updated on | Published on February 23, 2011
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Tap Water

Flickr Commons: Image provided by Horia Varlan

Water is essential for your survival because your organs and cells need it to function properly. According to scientists, the human body is made of about 70 percent water. Because your body is made of mostly water, it also depends heavily on water to survive, and therefore the quality of the water you put in your body can significantly harm or improve your health.

Most sources of drinking water in the United States (U.S.) and many Western countries contain very toxic chemicals. Manufacturers of these chemicals claim that the chemicals are needed to treat the water and some of the chemicals are important for health. Their claims are misleading and are only aimed for profits.

Fluorosilicic Acid (Hydrofluorosilicic Acid) and Other Hidden Toxic Chemicals in Drinking Water

If you live in the United States, a great portion of your drinking water is treated with a very toxic chemical called fluorosilicic acid, also known as hydrofluorosilicic acid (H2SiF6). Hydrofluorosilicic acid is the diluted version of fluorosilicic acid.

As described on PolyProcessing.com:

H2SiF6 is a chemical often known by other names, like fluorosilicic acid, fluosilicic acid, silicofluoride, and silicofluoric acid. It is a colorless chemical that is created when you take phosphoric rock from the ground and convert it to soluble fertilizer. In this process, two very toxic fluoride gases are released with hydrogen fluoride being one of them; the other is silicon tetrafluoride. The condensation from this hydrogen fluoride is collected, then scrubbed with water.

… Hydrofluorosilicic acid is easily the most dangerous chemical at your local water treatment plant. It can release hydrogen fluoride when it evaporates, is corrosive, and can damage the lungs if breathed in, making it especially dangerous for plant employees if stored incorrectly.

FSA also interacts negatively with metals to produce a flammable hydrogen gas, meaning a stainless steel chemical storage tank is not a viable option. It attacks glass, eats through concrete, and poses a serious storage concern. …

The powder version of fluorosilicic acid is called sodium fluorosilicate and sodium fluoride, not to be confused with calcium fluoride. Calcium fluoride is naturally found in soil whereas sodium fluoride is a synthetic toxic waste known to cause cancer. This is the same sodium fluoride found in toothpaste.

Sodium fluoride is even more toxic than most rat poison. Would you put rat poison in your drinking water or toothpaste? If you eat a lot of conventional food, you are poisoning your body with sodium fluoride, because it is one of the main ingredients in pesticide, insecticide and fungicide. Other toxins found in U.S. drinking water are arsenic, chlorine, lead, and pharmaceutical drugs.

In very small levels, these toxins are not lethal. However, consuming them for long periods of time will cause them to accumulate in the body, causing chronic health problems later on in life. This is why they are known as silent killers.

As mentioned on Organic-Gardening-and-HomeSteading.com:

Fluorosilicic acid is a waste product of the phosphate fertilizer industry and is heavily contaminated with toxins and heavy metals (including the cancerous arsenic, lead and cadmium) and radioactive materials. This substance is the waste residue from the superphosphate fertilizer industry, and about 70 to 75 percent of this stuff comes from the Cargill fertilizer manufacturing company.

Dr. J. William Hirzy, EPA scientist, is reported to have said, “If the stuff gets out into the air, it’s a pollutant; if it gets into the river, it’s a pollutant, if it gets into a lake, it’s a pollutant; but if it goes right straight into your drinking water system, it’s not a pollutant. That’s amazing!”

Another very toxic chemical found in drinking water is hydrofluoric acid. Below is an excerpt about this chemical from PreventDisease.com.

The fluoride added to 90% of drinking water is hydrofluoric acid which is a compound of fluorine that is a chemical byproduct of aluminum, steel, cement, phosphate, and nuclear weapons manufacturing.

Hydrofluoric acid is used to refine high octane gasoline, to make fluorocarbons and chlorofluorocarbons for freezers and air conditioners, and to manufacture computer screens, fluorescent light bulbs, semiconductors, plastics, herbicides, and toothpaste.

The toxic chemicals found in drinking water are so overwhelming that independent researchers have linked them to many chronic diseases. If you want to significantly improve your health, you need to drink water free of toxic chemicals, including but not limited to sodium fluoride, chlorine, lead, arsenic, hydrofluoric acid, and fluorosilicic acid.

How to Purify Drinking Water

The most convenient way to remove toxic chemicals from your drinking water is to use a water purification system that can remove most contaminants and sodium fluoride. Reverse osmosis and activated alumina water purification systems are usually recommended for removing sodium fluoride.

Water distillers are even better for purifying water of sodium fluoride and water contaminants. However, drinking distilled water for long periods of time is not wise, because this type of water is nearly free of minerals. Because of this, distilled water lack the ability to conduct an electrical charge, causing it to behave like an aggressive solvent, and therefore seizes minerals from whatever it touches. In other words, it will dissolve minerals in the body. This could be one of the main reasons why people who drink distilled water for long periods of time often get osteoporosis.

To reduce the corrosive property of distilled water, you need to add minerals to it. After doing this, you should test its pH level using a water pH test kit sold at pet stores. This type of test kit is more accurate than the traditional pH test strip. Most health water experts agree that water with a pH of slightly above 7.0 is healthy to drink.

Besides adding minerals to drinking water, you may also want to structure the water using a Natural Action Technologies structured water unit. Structured water is healthier than tap water because its molecules are more active, making it more energetically alive, fresh, and vibrant.

If you are interested in a portable activated alumina water purification system, I recommend the Royal Berkey water filtration system with the extra PF-2 fluoride filters. A great place to purchase Berkey water filtration systems is at this online store.

I do not recommend buying cheap water filters from your local retail stores. These filters do a poor job of removing water contaminants, especially sodium fluoride. Bottled water and filtered water sold at local stores are also not as pure as they should be, unless they are filtered using reverse osmosis technology or a multi-stage water filtration system that can remove sodium fluoride.

What makes bottled water not healthy is that chlorine is usually added to the water after it is purified. In addition, the chemical called phthalates found in plastic containers can leak into the water. High doses of phthalates have been known to disrupt hormones in rodents, causing damages to certain organs and birth defects.

The short video below shows visual evidence of how toxic fluorosilicic (hydrofluorosilicic) acid is. This acid is so strong that it can eat through concrete. Because it is so corrosive, the cleanup crew has to wear bio-hazard suits to clean it up.

Fluoride Spill Eats Holes in Concrete – Rock Island, Illinois


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Category: Awake & Aware, Purified & Energized Water, Toxins

Comments (23)

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  1. Danny says:

    Very intresting article and I will be purchasing a filter but I was wondering if there was any water sold in the market that is free of these toxins

    • PL Chang says:

      As far as I know, there is no water in the market that is free of toxins. Water sold on the market, such as bottled water is just as bad as tap water. Below is an excerpt from an earlier article that I wrote about bottled water.

      Most bottled water that you buy at the store is not that much better than the water you drink from your faucet. The problem with the bottled water industry is that government standards are not very strict and these companies are usually self-regulated. Another major problem is that laws and regulations are not specific enough. Bottled water companies can easily manipulate their labels just like how the food industries can manipulate their labels. In many cases, chlorine is added to bottled water as a sanitizer to prevent organisms from breeding in the water. Chlorine is not dangerous in small amounts but it still affects your health and may cause health problems in the future. The chemical called phthalates found in plastic containers can leak into bottled water over time. High doses of phthalates have been known to disrupt hormones in rodents causing damages to the liver, testes and birth defects. According to the firm Research and Markets, 50 percent of bottled water sold in the market is processed tap water.

      Most water sold on the market doesn’t use filters that can effectively remove fluoride. Plus, a lot of the water are treated with chlorine.

      • Dan says:

        Can someone provide a list of bottled water brands that aren’t just tap water? I’ve heard Fiji is a good one, but I’m not positive.

    • Matthias Beebe says:

      I just signed the petition “Stop Flouridating Tap Water” on Change.org.

      It’s important. Will you sign it too? Here’s the link:



  2. michael says:

    I work in a water treatment facility and i have been with same employer for over sixteen years. I am not sure about how toxic this acid is but in the industry many including myself feel the risks and cost outweigh the possible benefits but the problem seems to be convincing those that have been around the industry longer and the politicians that encourage it’s use. In the facilities that i work in we use hydroflourosilic to help with tooth decay and orthophosphate for corrosion prevention, even when shown the cost savings this is not enough to change minds. I always say to people that when they go to the dentist and get a flouride treatment they are told to spit it out because the studies from the past were about application of flouride not the consumption of this acid.

  3. Wow.. It’s hard to describe my reaction to this article but I will be contacting my local water Dept for a list of additives. Thanks for the info.

  4. Jacob Dietz, M.Sc. Inorganic Chemistry says:

    Hydrofluorosilic Acid reacts with water to form a silol (Or if concentrated enough a poly silol). Both of these are inert and would precipitate out of solution during water treatment. The Hydrofluoric acid would be left in the run-off water that would eventually end up in a well or municipal water stream. With the reactivity of HF, however it would react to form a metal fluoride (predominantly Sodium Flouride). These compounds are added to public waters to strengthen teeth.

    With flouride salts, the benefit or damage is in the dose. Some districts have naturally occuring florides in the wells they use for sourcing and don’t add any, others do add it in a low, helpfull concentration.

    IF there is a rigorous scientific study to show that free fluoride ions are damaging to health above the recomended 500 to 1000 Parts per billion range set by the WHO, please let me know, otherwise, Hydrofluorosilic acid ends up as sodium flouride in your drinking water at a safe level.

    • Dr knowledge says:

      Fluoride ions are not only damaging to health but also contains heavy metals and includes lead and arsenic . That every one knows undiluted will kill you immediately . Accumulated in the body over time will kill you eventually

      But in the longterm will kill you slowly . Not to mention the adverse effects it has in deteriorating the iQ of the global population before birth .

      There was a comparative study conducted in Iran July-September 2011 on 150 boys and girls in a high and low water fluride city’s . The experiment was conducted in 2 communities in the mountainous region of Kerman province . http://www.fluorideresearch.org/443/files/FJ2011_v44_n3_p163-167_sfs.pdf

      The results shown that the children in the community with the high fluoride content tested significantly lower than that with the low content and the IQ of the community with lower fluoride intake was much higher

      In conclusion fluoride isn’t only extremely bad for you and will kill you in the long run but will significantly decrease your IQ and dumb you down before that

      • PL Chang says:

        Whenever they have fluoride spills (sodium fluoride), they have to wear biohazard suits just to clean them up. That should tell you something. There is no need to add sodium fluoride in drinking water, because it does not prevent tooth decay like they claimed. Cities are just wasting money on this toxic waste. Most US cities are broke, so why waste money on something we do not need.

      • Sara says:

        Here is a copy of the MSDS Sheet for this deadly killer.


        Read this, then you decide. Don’t take Jacob the expert’s word for it. It’s all about PROFIT. Follow the money $$$$$$$$$

        • John Daniels says:

          Well said!!

          we don’t have a choice our politicians don’t care, they sold us out a long time a go.
          just watch thee doco’s @
          and yes a filter is the way to go. I have got one as soon as I found out, a necessity with kids.

    • shawn says:

      there a few chemists that have said that hydrofluorosisilic acid in the water is very bad. i have a question for you, this is not about water,this could be related though. have you studied amalgam fillings. first it is a huge lie to call them silver fillings as many do. they are(and i realize batches can vary)50% mercury 13 %silver then copper and then lead respectively. call them what they are MERCURY the law says that when removed these fillings are to be treated as hazmat. same with hf acid almost no one will argue that mercury is a poison, it is rated at 1200 while plutonium is 1600 . why in gods green earth are they putting this crap in millions of peoples mouths ? i have 11 mercury fillings ,i have had them since 6 yrs old. i have had headaches since i was 6 .i have seen videos where gasses are given off because of the dissimiliar metals electricity .
      i have been to hundreds of doctors etc i always tell them about my regular headaches NOT ONE has ever mentioned the fillings. i am 54 yrs . what do you think?

    • chris says:

      to the academic
      ever washed a fresh apple in your so called safe fluoridated water then left it sit for a couple of hours, it goes rotten.this is Wangaratta Victoria australias water,poison and you defend it how much do they pay you to defend it.

  5. John Fisher says:

    I think the statement that 90% of the drinking water is fluoridated with hydrofluoric acid is incorrect. Most of it is fluoridated with hexaflurosilicic acid, some of which may dissociate to HF when it is mixed with water.

    • shawn says:

      wikipedia says 70% of american cities use hydroflourosiscilic acid which comes from fertilizer manufacturing (phosphate) look it up 60 % from one company. some chemists swear that this is lethal even in small doses however it takes time to build up .
      what do you think about the food pyramid encouraging people to eat more sugar(carbs) ? i believe this is the greatest health problem of the century.and un-natural fats poly-unsaturated sis, trans and hydrogen pressed.
      large amounts of insulin in the bloodstream seems to me to be a obvious killer .

  6. PL Chang says:

    It’s about time!!! In March 2014, The Lancet, the world’s oldest and most prestigious medical journal published a report classifying fluoride as a neurotoxin.

    From TheLancet.com: “In 2006, we did a systematic review and identified five industrial chemicals as developmental neurotoxicants: lead, methylmercury, polychlorinated biphenyls, arsenic, and toluene. Since 2006, epidemiological studies have documented six additional developmental neurotoxicants—manganese, fluoride, chlorpyrifos, dichlorodiphenyltrichloroethane, tetrachloroethylene, and the polybrominated diphenyl ethers.”

    FYI: This medical journal is talking about sodium fluoride, the fluoride that they use to treat drinking water. This form of fluoride is also found in conventional toothpaste and pesticides.

  7. Dave says:

    I have been sick for 3 years now several hospitalizations and many attempts with pharma.

    On April 17 2015 I was told to immediately go to the emergency room.
    I hand a Texas Foley inserted and drained 8.5 liters of urine. 28 pounds of weight lost on one hour.
    I have never had a urinary issue and consume only organic food and bottled water.
    I have no BPH issue or trouble urinating however in the US my body retains tremendous amounts of water.
    WHile in Peru for a month I lost 28 pounds eating three times the amount I eat here.
    I noticed how many people are in the doctors offices at the urologist I would estimate at least 100 new faces each day I have been there.
    This is an epidemic of urinary disfunction the Doctors are silent because business is good.
    Even bathing in the toxin is extremely dangerous, this is a soft kill of the american people.

    If you have had any rapid weight gain immediately suspect urinary disfunction as a potential cause the insurance companies and the Doctors will not, demand complete diagnosis without treatment first.

  8. Weasel Spleen says:

    So many incredibly ignorant statements in this article and the comments.
    The most hilarious one is the claim that fluoride ions contain heavy metals. That claim doesn’t even make sense. A fluoride ion consists of one single atom of fluorine with one electron missing from its outer shell. It’s physically impossible for one atom to contain a bunch of other atoms.

    But this is the kind of nonsense we get when we neglect basic science education.

  9. For scientific studies documenting the harmful effects of water supplies treated with either fluorosillc acid (H2SF6) or sodium silicofluoride (Na2SiF6), see the entry for “Roger Masters” on Wikipedia, and in the list of scientific publications, scroll down to “Neurotoxins and Behavior.”
    After several references on lead and behavior, there are 6 of a longer bibliography of scientific papers linking either of the silicofluorides to neurotoxic effects (interference with functions of the neurotransmitter dopamine (and, though not discussed in these citations, the enzyme acetylcholinesterase). The consequences are that where either H2SiF6 or Na2SiF6 are added to water, there is higher uptake of lead from local sources of environmental lead, and higher rates of learning deficits, substance abuse (cocaine), and violent crime. There is every reason to suspect that these effects have been pronounce in the urban areas served by the Detroit Michigan water system — namely Detroit itself (which at one point ranked #1 in the rate of violent crime in U.S. cities and Flint, Michigan (which rated #3). The link between silicofluorides and the current crisis in Flint has not been a matter of concern to officials — or scientists who are supposed to be experts in water quality. I’ve just been unraveling the linkage between Detroit and Flint. It’s a very complicated story, and apart from questions of blame (in both cities) — and they are abundant — it is time that this disaster become a general message that the use of either silicofluoride should cease immediately. Even if only a moratorium of two years was the government action, several years of testing children’s blood and considering any possible reduction in the behavioral (which probably will take at least a decade to completely disappear because lead is inert and once in the body (and hence in the brain), it stays there.

    For more, see coverage on my most recent scientific papers on my web-sites, notably the entry for my name in Wikipedia (see above).

    • m says:

      Detroit increased the amount of chlorine to their new source which was surface water. The increase of chlorine caused the corrosion and the material scalped from the pipes remained in the distribution system which consumed chlorine, So they added more chlorine. The same thing occurred with my own system in WA state. Officials raised the residual requirement because they said they did not trust the new operator they hired yet and ignored our pleas about the destruction to our system, plants laundry health household plumbing parts etc and even our septics biotic action. They did nothing until the septics failures threatened the environment after 16 months of complaining.Shortly thereafter, they published an article in their newsletter for operators to make certain they changed the formula for 6% bleach to 8.25%.Their excuse 4 years later for ignoring the chlorine and our other concerns of dbp’s and thms and the parallels with Flint was that we are a tnc system and are not required to test for them. Husband just got through a stem cell transplant for tpll, the aggressive leukemia with a very poor prognosis that lab animals get from consuming high levels of chlorine. Their latest response when informed the tap water chlorine was again high enough to burn my hands was, “we can not lower the chlorine”. Our government health officials are dangerous!!

  10. m says:

    Chlorine when combined with other chemicals and organics create dangerous substances. What happens when chlorine is combined with the fluoride?