Does Reverse Osmosis Remove Lead From Drinking Water

Does Reverse Osmosis Remove Lead From Drinking Water

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Charlie W. Palmer
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In this article, we’re going to be discussing whether reverse osmosis removes lead from water, but firstly, it’s important to understand what exactly reverse osmosis is and how it works.

How Does Reverse Osmosis Work?

Reverse osmosis is a water treatment process that uses pressure to force water molecules through a semipermeable membrane.
The semipermeable membrane of the carbon filter allows only water molecules to pass through while trapping larger molecules like salt ions, bacteria, and viruses.
Each RO system has a different number of filter stages available, with different activated carbon filters, and the more expensive units have a higher number of stages. Each stage is designed to filter out a specific type/band of mineral, molecule, heavy metal, bacteria, virus, and so on.
Some RO systems even have UV (ultraviolet light) that helps to sterilise water by eradicating bacteria DNA and virus RNA.
Overall, RO contributes to improved water quality. However, drinking RO water for long periods of time is not recommended due to the removal of core minerals; therefore, if it were to be used as drinking water, remineralisation could be done by adding small amounts of Himalayan sea salt (seek expert advice here), as it contains elevated levels of minerals such as magnesium, calcium, and iron.

What is Lead and where is it used?

Lead is a heavy metal that is used in a variety of products and industries. It is a soft, malleable metal that is resistant to corrosion. Lead has a long history of use in a variety of applications, including as a solder for electrical components, as weights for fishing line and curtains, and as a sealant for pipes and joints. It is also used in the production of batteries, ammunition, and pigments. Although lead has many useful properties, it can also be toxic to humans and animals if ingested or inhaled. Lead exposure can cause a variety of health problems, including brain damage, learning disabilities, kidney damage, and cancer.

Lead’s Impact on Human Health

Lead is a very dangerous metal that can have a lot of negative effects on human health. Lead exposure can cause damage to the brain, kidneys, and nervous system.

It can also cause anemia, high blood pressure, and reproductive problems. Pregnant women and young children are especially vulnerable to the harmful effects of lead. Even low levels of lead exposure can cause health problems, so it is important to avoid exposure to this metal as much as possible.

With that being said, we can understand why you’d want to remove it from the water that you drink or consume.

Does Reverse Osmosis Remove Lead?

Reverse osmosis is a water purification process that uses pressure to force water through a semipermeable membrane. This process can remove impurities, including lead, from water. However, the effectiveness of reverse osmosis depends on the quality of the membrane and the amount of pressure that is applied.

However, because reverse osmosis removes all impurities from water, it also removes essential minerals. As a result, reverse osmosis water may taste flat and lack the mineral content of regular tap water.

Therefore, one can remineralize the water post-filtration, using calcium and magnesium salts.

What Else Does Reverse Osmosis Remove?

Reverse osmosis also removes other contaminants from water, including fluoride, chloride, calcium, arsenic, chloramine, heavy metals, pesticides, and pharmaceuticals.

Unfortunately, RO does remove healthy minerals in water, such magnesium, sodium, potassium and calcium

While most municipal water supplies in the United States are required to meet strict safety standards set by the Environmental Protection Agency (EPA), trace amounts of these and other contaminants can still end up in tap water. That’s why many people use reverse osmosis systems to further purify their drinking water.

How Do I Know If My Water Is Contaminated With Lead?

There are a few ways to test if your water is contaminated with lead. You can use a home test kit, which you can purchase online or at a hardware store. These tests will measure the lead levels in your water. You can also have your water tested by a professional laboratory.

How Else Can I Remove Lead from My Water Supply?

You can also use bottled water or a water filter designed to remove lead.


In conclusion, does reverse osmosis remove lead? Yes, it does. Reverse osmosis is an effective way to remove lead from water. It is also a safe and affordable method of water filtration. For those who may be interested in getting a RO system, you’ll need to consider which type, whether you want a whole house system, countertop or undersink RO unit.

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