Drinking tap water causes black stains on teeth

Drinking Tap Water Can Cause Black Stains On Teeth

Drinking tap water with a high content of iron and high levels of pH can cause black stains on teeth.

And not just black stains on teeth, there are other dangers of drinking tap water. Almost all sources are contaminated and are a potential health risk.

In the study, researchers of the Oral Microbiology Group of the CEU Cardenal Herrera University in Valencia, Spain looked at 94 patients from 10 dental clinics in the provinces of Valencia and Castellon in Spain. Of these participants, more than half already had extrinsic black stains on their teeth.

Through surveys, the researchers evaluated the participants’ oral hygiene habits, such as the type of toothbrush they use and their brushing frequency, as well as their eating habits, such as snacking between meals, water consumption, smoking, and consuming caffeinated drinks.

The researchers also analyzed the participants’ general oral health status based on the number of teeth the participants had with caries, missing teeth, and sealed teeth, as well as the presence or lack of periodontitis and bleeding gums. They also conducted chemical analyses on all the dental plaque and saliva samples taken from the patients, as well as on the water they regularly consumed, including tap water, osmosed water, and bottled water.

Based on the results, three risk factors stood out as statistically significant regarding the appearance of black stains on dental plaque. These included regular consumption of water with high levels of iron or water with a high pH, and having saliva with high pH. Also, snacking between meals can reduce the appearance of black stains, because it helps lessen the pH level of saliva.

The results of the study also revealed that drinking tap or osmosis water compared to bottled water can increase the chance of black pigmentation by three times.

This explains why people with black stains on their teeth are often advised to drink mineral water instead of tap or osmosis water.

Reasons why to avoid drinking tap and choose mineral water instead

The water in household taps comes from surface or underground sources, which are often contaminated. Tap water can also be contaminated from rusted or leaking pipes. Because of this, tap water is treated with chemicals, which makes it more dangerous to health. Two of the most prominent chemicals found in tap water are chlorine and fluoride.


Chlorine is used in drinking water to kill dangerous organisms that can cause severe illness. While this is a nice benefit, it comes at an expensive cost to our health.

The byproducts that result from the chlorination of water, such as trihalomethanes, are a much larger concern than the chlorine itself. These byproducts don’t break down easily and tend to accumulate in the body faster than the detoxification system can handle. They’ve been linked to cancer, are known to damage the heart, lungs, kidneys, and nervous system, and are lethal to the beneficial bacteria in the intestines that are crucial to immunity and digestion.


Fluoride is commonly added to drinking water to help prevent tooth decay. It’s linked to cancer and osteoporosis, can damage the heart, brain, and kidneys, and can cause behavioral disorders, birth defects, arthritis, hormone imbalance, and excessive calcification of arteries and joints.

With these significant risks, you’d think that fluoride must provide a significant benefit, but in contrast, research indicates that its addition to water makes little difference in the prevention of tooth decay. What we have here is another disastrous example of science trying to outsmart nature.

As can be seen from the work of Dr. Weston A. Price, proper diet is all that’s needed to prevent tooth decay. Even if the fluoride was effective, we shouldn’t all be put at risk to justify the unhealthy eating habits of modern society.

How to Protect Yourself

Although this is alarming information, there’s plenty you can do to minimize your risk. The following suggestions will help you get started.

Drink Clean Water

Many of the toxic chemicals found in drinking water are dangerous in very small quantities. As such, it’s nearly impossible to identify them based on taste, and this increases the need to be sure that your drinking water is properly filtered.

The best type of filtration I know of is the combination of reverse osmosis and activated carbon. This combination is commonly combined into a single filtration unit that can be connected to your sink or refrigerator. An advantage of connecting it to your refrigerator is that your ice cubes will be purified along with your drinking water.

A less expensive alternative to the reverse osmosis filter is the faucet filter. Although it doesn’t filter as thoroughly as the reverse osmosis unit, it should be sufficient.

Furthermore, it’s convenient when you need the fast flow of a faucet, and it’s also a great way to ensure access to clean water when you travel because some models are portable.

One problem with filtering drinking water is that it filters it too well and removes the natural minerals and trace elements along with the chemicals. Many experts believe that drinking this type of water will cause these essential materials to be pulled out of your body. You can easily prevent this by adding a pinch of organic sea salt. While this may sound disgusting, only a tiny bit is necessary and you probably won’t even notice it.

Beware of Bottled Water

Bottled water is not a healthy option many people think it is. Some bottled water is no less contaminated than ordinary tap water. The plastic bottle it comes in makes matters worse by leaching chemicals into the water, especially if it’s been exposed to heat. Furthermore, the enormous quantity of plastic bottles being produced has created significant environmental concerns.

While there are some quality brands of tap water, it’s best to drink filtered water as often as possible. However, keep in mind that it’s not a good idea to go without water and dehydrate yourself just because filtered water isn’t available. Tap water or bottled water are both much better than no water at all!

Avoid Plastic

As I just mentioned, plastic containers leach toxic chemicals into the water they contain. This means you want to avoid plastic cups, jugs, and sports bottles as often as possible. The best options are glass or stainless steel. You can easily find these online and from many major retailers.

Conclusion: You must drink water, it is essential to drink to maintain health on high levels. Try drinking filtered and clean water and avoid drinking tap water.

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