Why Purified Water May Be Unhealthy
Think purified water is always best? Discover why highly processed purified water can actually be unhealthy, potentially lacking vital minerals and impacting your body's balance. Learn about the risks and healthier alternatives.
Written by Dr. Rohinipriyanka Pondugula
Reviewed by Dr. D Bhanu Prakash MBBS, AFIH, Advanced certificate in critical care medicine, Fellowship in critical care medicine
Last updated on 24th Jul, 2025
Introduction
Water is essential for life, and drinking clean water is crucial for good health. Many people choose purified water, believing it to be the safest option. However, while purified water is free from contaminants, it may also lack essential minerals that our bodies need. In this article, we’ll explore why purified water might not always be the healthiest choice and what alternatives you can consider.
What is Purified Water?
Purified water goes through processes like reverse osmosis, distillation, or deionization to remove impurities, chemicals, and contaminants. While this makes the water clean, it also strips away beneficial minerals like calcium, magnesium, and potassium that are naturally present in water.
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Why Might Purified Water Be Unhealthy?
Following are the reasons why purified water might be unhealthy:
1. Lack of Essential Minerals
Our bodies need minerals like calcium, magnesium, and potassium for various functions, including:
- Bone health (Calcium & Magnesium)
- Muscle function (Magnesium & Potassium)
- Nerve function (Magnesium)
- Heart health (Potassium & Magnesium)
- Drinking only purified water over time may lead to mineral deficiencies, especially if your diet is already low in these nutrients.
2. May Contribute to Acidic pH Levels
Purified water tends to be slightly acidic because it lacks minerals that help balance pH. Drinking acidic water regularly may affect your body’s natural pH balance, potentially leading to issues like:
- Tooth enamel erosion
- Bone weakening (as the body may pull calcium from bones to neutralize acidity)
3. Can Lead to Electrolyte Imbalance
Electrolytes (sodium, potassium, magnesium) are crucial for hydration and muscle function. Purified water, being minerals free, does not replenish these electrolytes. Excessive consumption without balancing mineral intake may lead to:
- Fatigue
- Muscle cramps
- Irregular heartbeat
4. May Increase Risk of Contaminant Absorption
Some studies suggest that demineralized (purified) water may leach minerals from the body or absorb contaminants more easily from pipes or storage containers.
Healthier Alternatives to Purified Water
Healthier alternatives to purified water are:
1. Mineral Water
Natural mineral water contains essential minerals like calcium, magnesium, and potassium. It’s a great way to stay hydrated while replenishing vital nutrients.
2. Spring Water
Spring water is naturally filtered through rocks, retaining beneficial minerals. It’s a good alternative if you prefer natural sources.
3. Filtered Tap Water (with Minerals Retained)
Instead of using reverse osmosis (which removes minerals), opt for carbon or ceramic filters that remove contaminants while keeping essential minerals intact.
4. Add Minerals Back to Purified Water
If you prefer purified water, you can enhance it by:
- Adding a pinch of Himalayan pink salt or sea salt.
- Using mineral drops designed for drinking water.
- Infusing water with lemon, cucumber, or mint for natural electrolytes.
Who Should Be Cautious with Purified Water?
- People with mineral deficiencies (e.g., low calcium or magnesium).
- Athletes or those who sweat a lot (since they lose electrolytes).
- Individuals with digestive issues (as minerals aid digestion).
- Children and elderly, who need proper mineral intake for growth and bone health.
Tips for Healthy Hydration
1. Balance purified water with mineralrich sources (like mineral water or fortified drinks).
2. Eat mineral rich foods (leafy greens, nuts, dairy, bananas).
3. Avoid excessive purified water consumption without compensating for lost minerals.
4. Check your water source—if using a home purifier, ensure it retains essential minerals.
When to Consult a Doctor?
If you experience symptoms like:
- Frequent muscle cramps
- Fatigue despite drinking enough water
- Weak bones or teeth issues
- It may be worth checking for mineral deficiencies.
Need Personalized Advice?
If you’re unsure about the best water choice for your health, consult a doctor or nutritionist. You can easily book a consultation through Apollo 24|7 for expert guidance.
Final Thoughts
While purified water is free from harmful contaminants, its lack of essential minerals may affect long term health. Opt for balanced hydration by choosing mineral-rich water sources or supplementing purified water with natural electrolytes.
Stay hydrated, stay healthy!
Consult a Top Nutritionist
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Ms. Lakshmi Tejasvi
Clinical Nutritionist
14 Years • M.Sc - Clinical Nutrition
Hyderabad
Vibgyor Nutri, Hyderabad
Dr Sumanth R
General Physician
2 Years • MBBS
Bengaluru
PRESTIGE SHANTHINIKETAN - SOCIETY CLINIC, Bengaluru
Mrs Sneha P V
Nutritionist
10 Years • Master of science in Food and Nutrition
Bengaluru
Apollo Clinic, Sarjapur Road, Bengaluru
Dr. Bhukya Pavan Kalyan
General Physician
5 Years • MBBS DNB Paediatrics
Bengaluru
PRESTIGE SHANTHINIKETAN - SOCIETY CLINIC, Bengaluru
Dt. Ila Sharma
Clinical Nutritionist
18 Years • Master in food & Nutrition
Gurugram
VIPUL GREENS - SOCIETY CLINIC, Gurugram
Consult a Top Nutritionist
Ms. Lakshmi Tejasvi
Clinical Nutritionist
14 Years • M.Sc - Clinical Nutrition
Hyderabad
Vibgyor Nutri, Hyderabad
Dr Sumanth R
General Physician
2 Years • MBBS
Bengaluru
PRESTIGE SHANTHINIKETAN - SOCIETY CLINIC, Bengaluru
Mrs Sneha P V
Nutritionist
10 Years • Master of science in Food and Nutrition
Bengaluru
Apollo Clinic, Sarjapur Road, Bengaluru
Dr. Bhukya Pavan Kalyan
General Physician
5 Years • MBBS DNB Paediatrics
Bengaluru
PRESTIGE SHANTHINIKETAN - SOCIETY CLINIC, Bengaluru
Dt. Ila Sharma
Clinical Nutritionist
18 Years • Master in food & Nutrition
Gurugram
VIPUL GREENS - SOCIETY CLINIC, Gurugram
