Yes, it can be harmful.

https://www.healthline.com/nutrition/fluoride-good-or-bad#section5

Risks

Excessive exposure to fluoride has been linked to a number of health issues.

….concerns have arisen regarding fluoride’s effect on health, including problems with bones, teeth, and neurological development.

Dental fluorosis

Exposure to high concentrations of fluoride during childhood, when teeth are developing, can result in mild dental fluorosis. There will be tiny white streaks or specks in the enamel of the tooth.

Skeletal fluorosis

Excess exposure to fluoride can lead to a bone disease known as skeletal fluorosis. Over many years, this can result in pain and damage to bones and joints.

The bones may become hardened and less elastic, increasing the risk of fractures. If the bones thicken and bone tissue accumulates, this can contribute to impaired joint mobility.

Thyroid problems

In some cases, excess fluoride can damage the parathyroid gland. This can result in hyperparathyroidism, which involves uncontrolled secretion of parathyroid hormones.

This can result in a depletion of calcium in bone structures and higher-than-normal concentrations of calcium in the blood.

Lower calcium concentrations in bones make them more susceptible to fractures.

Neurological problems

In 2017, a report was published suggesting that exposure to fluoride before birth could lead topoorer cognitive outcomes in the future.

The researchers measured fluoride levels in 299 women during pregnancy and in their children between the ages of 6 and 12 years. They tested cognitive ability at the ages of 4 years and between 6 and 12 years. Higher levels of fluoride were associated with lower scores on IQ tests.

In 2014, fluoride was documented as a neurotoxin that could be hazardous to child development, along with 10 other industrial chemicals, including lead, arsenic, toluene, and methylmercury.

Other health problems

According to the International Association of Oral Medicine and Toxicology (IAOMT), an organization that campaigns against the use of added fluoride, it may also contribute to the following health problems:

  • acne and other skin problems
  • cardiovascular problems, including arteriosclerosis and arterial calcification, high blood pressure, myocardial damage, cardiac insufficiency, and heart failure
  • reproductive issues, such as lower fertility and early puberty in girls
  • thyroid dysfunction
  • conditions affecting the joints and bones, such as osteoarthritis, bone cancer, and temporomandibular joint disorder (TMJ)
  • neurological problems, possibly leading to ADHD

One review describes fluoride as an “extreme electron scavenger” with an “insatiable appetite for calcium.” The researchers call for the balance of risks and benefits to be reconsidered

Fluoride poisoning

Acute, high-level exposure to fluoride can lead to:

  • abdominal pain
  • excessive saliva
  • nausea and vomiting
  • seizures and muscle spasms
https://www.medicalnewstoday.com/articles/154164.php

Skins ability to absorb fluoride in the shower bath and pool

Fluoride is readily absorbed through the skin when showering, bathing, or swimming in a fluoridated swimming pool. (just like a nicotine patch).  Your skin is the largest organ of the body.  And yes, the fluoride in toothpaste, foods, water, and beverages can be absorbed through the tissues of the mouth and from under the tongue. (just like nitroglycerin tablets or sub-lingual vitamin B-12).  According to the Physician’s Desk Reference, the mucosal lining inside the mouth has an absorption efficiency of over ninety percent.  Because of this, fluoride and other carcinogens can get into your blood, your brain, and your cells in no time at all.

In 1997, the EPA concluded that a person can absorb more contaminants from bathing and showering than from drinking polluted water.

Studies done by Brown, Bishop and Rowan in the early 1980s showed that an average of 64 percent of the total dose of waterborne contaminants (including fluoride) are absorbed through the skin.

A study by British researchers at the Health and Safety Laboratory in Sheffield published in the February 19, 2000 issue of Human Experimental Toxicology suggests that toxicants such as fluorides can be stored in the skin and released over a period of time.

The failure to account for inhalation and dermal exposures to fluorides is the most significant flaw in fluoride research.  It invalidates all dosage conclusions based solely on ingestion.

Among other health hazards, fluoride also increases your risk for cancer:

http://www.youtube.com/watch?v=ClqK7XvfL…
http://www.youtube.com/watch?v=B9ifyVJUM…

Read why over 1000 EPA scientists oppose fluoridation: http://www.nteu280.org/Issues/Fluoride/N…

The LD50 type of fluoride added to tap water is more toxic than lead and only slightly less toxic than arsenic.

This is based on LD50 data from Robert E. Gosselin et al, Clinical Toxicology of Commercial Products 5th ed., 1984.

The fluoridated water you drink is not the same product as researched.  The only similarity is the fact that the fluoride ion is present in some form.  The fluoride ion only hypothetically exists as an entity in an ideal solution, purified water, and tap water is far from pure H2O.  It is not, “simply the fluoride ion in water,” it is a complex recipe of toxic substance.

http://fluoridetruth.blogspot.com/2012/03/skins-ability-to-absorb-fluoride-in.html

another source: https://www.atsdr.cdc.gov/toxguides/toxguide-11.pdf

There is a conspiracy theory that says ‘they’ are putting this in our water to calcify our pituitary gland.

Our new customer requested fluoride free water for her whole house.

We have found a simple and convenient solution to remove fluoride from the whole house water supply.

bone char carbon

This product is available from our water treatment supplier.

We will fill this media in a tank and connect this to the entire house water supply.

Bone Char Carbon will remove all fluoride from the incoming water supply.

This media must be the proper quantity, the tank must be the proper size and  this media must be exchanged every two years.  

We are preparing our company to install this rental product and exchange this in a timely manner.

Our technicians have the skills and talents to perform a quality installation.

Our trucks can effectively deliver this product to you.

Our computers run a professional water treatment program especially designed to notify you when the two-year exchange is due.

When you call us to establish a consultation appointment, an installation appointment and an exchange appointment we will be ready to take action to meet with you at your convenience.

Here is a little more information about Bone Char Carbon:

Bone char (Latincarbo animalis) is a porous, black, granular material produced by charring animal bones. Its composition varies depending on how it is made; however, it consists mainly of tricalcium phosphate (or hydroxylapatite) 57–80%, calcium carbonate 6–10% and carbon 7–10%.[1] It is primarily used for filtration and decolorization.

Production[edit]

Bone char is primarily made from cow bones; however, to prevent the spread of Creutzfeldt–Jakob disease, the skull and spine are no longer used.[2] The bones are heated in a sealed vessel at up to 700 °C (1,292 °F); the oxygen concentration must be kept low while doing this, as it affects the quality of the product, particularly its adsorption capacity. Most of the organic material in the bones is driven off by heat, and was historically collected as Dippel’s oil; that which is not driven off remains as activated carbon in the final product. Heating bones in an oxygen-rich atmosphere gives bone ash, which is chemically quite different.

Used bone char can be regenerated by washing with hot water to remove impurities, followed by heating to 500 °C (932 °F) in a kiln with a controlled amount of air.

Uses[edit]

Water treatment[edit]

The tricalcium phosphate in bone char can be used to remove fluoride[3] and metal ions from water, making it useful for the treatment of drinking supplies. Bone charcoal is the oldest known water defluoridation agent and was widely used in the United States from the 1940s through to the 1960s.[4] As it can be generated cheaply and locally it is still used in certain developing countries, such as Tanzania.[5] Bone chars usually have lower surface areas than activated carbons, but present high adsorptive capacities for certain metals, particularly those from group 12 (copperzinc, and cadmium).[6] Other highly toxic metal ions, such as those of arsenic[7] and lead[8] may also be removed. The practical example of the use of bone char in water purification is demonstrated in Nanofilter invention in Tanzania[9]

https://en.wikipedia.org/wiki/Bone_char

This is the tank in which we plan to utilize to apply this water treatment technique.  This tank has an in and out valve that will allow the water to flow through the bone char carbon.  Every two years we will exchange this tank.

The Scottsdale resident who helped me develop this product believes in preventative health care.  She is happy and healthy and very active (without seeing a doctor in 30 years).

Interested in having fluoride free water?

Please give us a call.  We plan to establish an affordable installation fee ($150 on a loop) and monthly fee ($75/month plus tax) to provide this service to many.

Brian Hayden Boyett

hayden@azh2o.com

office (480) 969-7251

text only please 602.291.4157

Here is a list of cities that are adding fluoride (or contain natural fluoride) to your water:

Mesa  –  https://www.mesaaz.gov/residents/water-resources/services/water-quality/fluoride

Tempe – https://www.tempe.gov/Home/ShowDocument?id=64573

Gilbert  https://www.gilbertaz.gov/home/showdocument?id=28414

Phoenix https://www.phoenix.gov/waterservicessite/Documents/wsdfluoride070512b.pdf

Glendale https://www.glendaleaz.com/utilities/documents/2017WaterQualityReportWEB.pdf

Scottsdale

https://www.scottsdaleaz.gov/Assets/ScottsdaleAZ/Water/Water+Quality/2018+Water+Quality+Report.pdf

Avondale

https://www.avondaleaz.gov/home/showdocument?id=4498

Surprise

https://www.surpriseaz.gov/DocumentCenter/View/38012/Desert-Oasis-Water-Quality-Report-2016?bidId=

Chandler

https://www.chandleraz.gov/residents/water/water-quality/faqs

PEORIA

https://www.peoriaaz.gov/government/departments/public-works-and-utilities/public-works-faqs/water

Goodyear

https://www.goodyearaz.gov/home/showdocument?id=162

Casa Grande

http://www.azwater.com/files/water-quality/ccr-casa-grande-2015.pdf