Boiling water is one of the most common ways people try to make their tap water safer. It’s quick, easy, and effective for eliminating bacteria and other microorganisms. Because of this, many assume that boiling can remove all kinds of impurities. But that’s not always the case. One question we get asked often is: Does boiling water remove fluoride?
Fluoride is a mineral found in most tap water across Australia, added to help prevent tooth decay. But not everyone wants it in their glass. If you’re boiling your water in hopes of getting rid of fluoride, it’s worth taking a closer look at what actually happens to fluoride during the process. Here’s what you need to know about fluoride in tap water and effective fluoride removal methods.
Fluoride in Drinking Water
Australia, like many other countries, adds fluoride to public water supplies to help reduce the risk of dental decay. This practice began in the 1950s and has since been endorsed by major health bodies, including the World Health Organization and the Australian Dental Association. The idea is simple: by adding a small amount of fluoride to drinking water, communities can help protect everyone’s teeth, especially in areas with limited access to dental care.
Despite these benefits, water fluoridation continues to stir debate. Some people question its necessity, citing concerns about long-term exposure and the ethical implications of mass medication. As a result, more individuals and households are looking for ways to control how much fluoride they consume, often by turning to filtration solutions.
Expanding this conversation helps highlight why many people ask about removing fluoride in the first place. It’s more than just about water quality. It’s about personal choice and health priorities.
Fluoride is a naturally occurring mineral. It’s commonly added to public water supplies to help prevent tooth decay. In small amounts, fluoride can strengthen enamel and reduce cavities. But there’s also debate about how much is too much.
While fluoride has well-documented dental benefits, long-term exposure to high levels may have unwanted health effects, including potential developmental or skeletal concerns. This is especially true for infants and young children, who are more sensitive to excessive intake.
What Happens When You Boil Water?
Boiling water changes its physical state but doesn’t alter its chemical composition. It’s a great method for killing bacteria, viruses, and parasites. However, it won’t get rid of dissolved substances like fluoride, lead, or nitrates.
As water boils, it evaporates. This reduces the total volume of water in your pot or kettle. The fluoride that remains becomes more concentrated in the remaining liquid.
So, Does Boiling Remove Fluoride?
No. Boiling water does not remove fluoride. Fluoride doesn’t evaporate with water vapour. When you boil tap water, the fluoride stays behind. Because of the evaporation process, the concentration of fluoride can actually go up.
If your goal is to reduce fluoride in your drinking water, boiling won’t help. It could even increase your fluoride exposure over time if you rely on boiled water for everyday drinking and cooking. For those seeking fluoride-free water solutions, boiling simply isn’t effective.

How to Remove Fluoride from Tap Water
There are a few proven fluoride removal methods that actually work. These include:
- Reverse Osmosis (RO): One of the most efficient fluoride removal methods, reverse osmosis removes between 80% and 99% of fluoride. It uses a semi-permeable membrane to filter out fluoride, chlorine, heavy metals, and other contaminants. Clean & Clear Water’s 5-stage reverse osmosis system offers a complete solution for homes and workplaces.
- Activated Alumina Filters: These can absorb fluoride from water, but they need regular maintenance and replacement.
- Bone Char Carbon Filters: Made from animal bones, these filters can reduce fluoride levels but are less commonly used in household systems.
If you’re serious about achieving fluoride-free water, reverse osmosis fluoride systems are the most practical and widely available option.
Fluoride Removal Methods That Don’t Work
Some filtration methods are popular but ineffective when it comes to fluoride:
- Boiling Water: Not only does it fail to remove fluoride, it can increase its concentration.
- Standard Activated Carbon Filters: These are great for improving taste and removing chlorine. They don’t remove fluoride. Most over-the-counter pitcher filters fall into this category.
- Freezing Water: A common myth, but freezing has no effect on fluoride levels.
If your current setup includes one of these methods, it might be time to consider a more reliable fluoride removal solution.
Health Effects of Fluoride
Fluoride is a double-edged sword. It offers clear benefits for dental health, but excessive exposure can lead to a range of health concerns. According to the World Health Organization (WHO), too much fluoride may contribute to conditions such as:
- Dental fluorosis: Discolouration or white streaks on teeth, typically resulting from excessive fluoride intake during early childhood.
- Skeletal fluorosis: A serious condition caused by long-term high fluoride exposure. It can result in joint stiffness, pain, and in severe cases, changes to bone structure.
- Neurodevelopmental effects: Some studies have linked high fluoride exposure during pregnancy and early childhood to reduced IQ and cognitive development, though further research is still ongoing.
- Kidney stress: Individuals with existing kidney issues may have difficulty filtering excess fluoride from their system, which can impact electrolyte balance and overall health.
Being aware of these fluoride health effects can help you make informed choices. The best approach is to strike a balance. Stay informed about the fluoride levels in your local water supply. Consider installing a filtration system if you want more control over your household’s fluoride intake.
Making a Safer Choice for Your Home
Boiling water is not the answer if you’re trying to remove fluoride. It’s not only ineffective, it can make things worse by concentrating the very substance you’re trying to avoid.
If your goal is to enjoy fluoride-free water, the solution lies in advanced filtration. Clean & Clear Water’s 5-stage reverse osmosis system is designed to deliver clean, great-tasting water by removing fluoride and a wide range of other contaminants. With easy installation and a lifetime warranty, it’s a smart and reliable choice.
Still unsure? Our team is here to help. Reach out today for personalised advice or to book a free consultation.