How Chlorine and Fluoride in Tap Water Impacts Your Health

Publish DateMar 31, 2021

Did you know that tap water can be a source of toxins undermining your health?

Many of us are aware of the dangers of pesticides, preservatives, and heavy metals; however, tap water toxins are lesser known.

While chemically treated water helps prevent illnesses caused by contamination from cholera, parasites, or dysentery, these man-made chemicals can further pollute your system and add to your toxic load. Chlorine and fluoride are commonly used water disinfectants which have been associated with a host of health consequences. Read on to learn why you should avoid these chemicals in tap water.


Chlorine is a heavy metal used to kill bacteria in water. It is extremely effective, which is why it is used in cleaning chemicals as a disinfectant. You can be exposed to chlorine from your shower, drinking water, and swimming pools. Unfortunately, these bacteria-fighting properties also kill good bacteria in your gut and can lead to digestive issues. This means that drinking chlorinated water can kill your good gut probiotics due to its antibiotic effects.

Chlorine toxicity is linked to weakened immunity and leaky gut. These issues can explain why so many people suffer from gut dysfunction and imbalanced gut bacteria. Given that 80% of immune cells are located in the gut, chlorine toxicity can lead to a host of other health conditions.

Chlorine is also known to be associated with low thyroid conditions. This is because chlorine depletes your body's iodine stores, which are essential for healthy thyroid function.

When chlorine is vaporized, such as in a hot shower or a steam room, it becomes more dangerous, as the chlorine can enter your bloodstream through your lungs. The long-term effects of chlorine vapor poisoning include weakened liver detoxification due to reduced glutathione, poor respiratory health, and lower energy levels.


Fluoride is a common ingredient in toothpaste, previously believed to prevent cavities.

In 1962, it was added to public tap water in the US by the Department of Health and Human Services, who advised to add between 0.7 and 1.2 mg of fluoride per liter. In 2017, this limit was lowered, with the new advice that tap water should contain no more than 0.7 mg per liter.

Studies show that most countries in Europe do not fluoridate their water, yet their rates of tooth decay have declined at the same rate as the US and other countries that do fluoridate their water1.

Tap water fluoridation and fluoridates toothpaste ingestion has been correlated with low thyroid, brittle bones, poor digestion, hormonal issues, acid reflux, eczema, psoriasis, fertility problems, and a host of other conditions.

Fluoride's negative effects on thyroid function are well-documented. Fluoride is toxic to thyroid cells and kills them. It only takes 0.33 mg per liter of fluoride to affect thyroid level, the same cutoff level of fluoride in tap water.

Investing in a quality water filter can help to mitigate the effects of exposure to tap water chemicals. A multi-step water filtration system, which includes five or more steps to purify water contaminants, or a reverse osmosis under the counter filtration system are effective options. You can also consider investing in a whole house water filtration system. While the installation can be a pricey up-front cost, this water filtration will purify the water coming from your kitchen faucet, shower, and bath.

Author: Jesamine Dyus


1 Connett, Michael. “Tooth Decay Trends in Fluoridated vs. Unfluoridated Countries.” Fluoride Action Network, 18 Apr. 2013,

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