Does Reverse Osmosis Remove Healthy Minerals? An Honest Answer
Yes. Reverse osmosis removes most dissolved minerals, including calcium and magnesium, along with contaminants like PFAS and lead. For most people that's not a nutrition problem, because most of these minerals come from food, not water. If you prefer mineral content in your water, an RO system can add a remineralization stage.
Why RO Removes Minerals
An RO membrane lets water molecules through and holds back dissolved solids. It can't pick and choose, so the same membrane that reduces PFAS, lead, nitrate and sodium also reduces calcium and magnesium.
Where Your Minerals Actually Come From
Calcium comes mostly from dairy, leafy greens, beans and fortified foods. Magnesium comes from nuts, seeds, whole grains and greens. Drinking water can contribute some, especially very hard water like Miami's, but for most people with a normal diet it's a small share.
What the WHO Says
The World Health Organization's 2005 report, Nutrients in drinking-water, looked at long-term consumption of very low-mineral water. It noted that water can contribute minerals, especially for people whose diets are low in them, and that remineralization may be worth considering. That's why remineralization options exist. It isn't a reason to keep drinking water with PFAS and lead in it.
Your Options
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Standard RO for the cleanest drinking water. Most families get minerals from food.
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RO with remineralization adds calcium and magnesium back after filtration. Some people prefer the taste.
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Whole-home softening plus RO protects plumbing from scale and gives you clean drinking water.
The Micromax 8500 is certified to NSF/ANSI 58, 42, 53, 401 and 372. Ask us about remineralization during your free water test.
Is RO Water Acidic?
RO water can measure slightly lower in pH because it has fewer minerals to buffer it. That doesn't make it harmful. Your body tightly regulates its own pH whatever you drink. Read more about acidity and alkalinity in water.
Common Questions
Is reverse osmosis water bad for you? No. It's the same process used to make most purified bottled water.
Does RO remove fluoride? Yes. Miami-Dade stopped adding fluoride in June 2025. See fluoride in Florida water.
Can I add minerals back to RO water? Yes. Many RO systems offer a remineralization stage that adds calcium and magnesium back after filtration.
Does RO water taste different? Many people find it tastes cleaner. Some prefer the taste of remineralized water.
Is RO water safe for cooking? Yes. Cooking with RO water is common and avoids the contaminants RO removes.
Will RO water leach minerals from my body? No. Your body gets most of its minerals from food and tightly regulates its own mineral balance.