Daily Water Intake Guide: Benefits, Types of Water & RO vs UV Purifier Comparison

Learn how much water you should drink daily, discover different types of drinking water, and compare RO vs UV water purifiers to choose the best option for your health.

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9/13/20233 min read

Daily water intake guide showing hydration benefits
Daily water intake guide showing hydration benefits

Daily Water Intake: How Much Water Should You Drink? Types of Water and RO vs UV Purifiers Explained

Water is essential for life and plays a crucial role in maintaining overall health. It helps regulate body temperature, transport nutrients, remove waste products, lubricate joints, and support various bodily functions. However, many people often wonder how much water they should drink daily and which type of water is best for their health.

In this guide, we'll discuss the recommended daily water intake, different types of drinking water, and the key differences between RO and UV water purifiers.

How Much Water Should You Drink Daily?

The amount of water a person needs depends on several factors, including age, gender, body weight, physical activity, and climate conditions.

The Popular 8x8 Rule

One of the most common recommendations is the "8x8 Rule," which suggests drinking:

  • 8 glasses of water per day

  • Each glass contains 8 ounces (approximately 240 ml)

  • Total daily intake: About 2 liters or 64 ounces of water

While this rule is easy to remember, individual water requirements may vary.

Daily Water Intake Formula Based on Body Weight

A more personalized method is to calculate water intake according to body weight.

Formula:

Daily Water Intake (ml) = Body Weight (kg) × 30–35 ml

Example Calculation

If your body weight is 70 kg:

  • Minimum water requirement:

    • 70 × 30 = 2,100 ml (2.1 liters)

  • Maximum water requirement:

    • 70 × 35 = 2,450 ml (2.45 liters)

Therefore, a healthy person weighing 70 kg should consume approximately 2.1–2.5 liters of water daily.

Benefits of Drinking Enough Water

Regular hydration offers numerous health benefits, including:

  • Supports kidney function

  • Improves digestion

  • Maintains healthy skin

  • Regulates body temperature

  • Enhances physical performance

  • Boosts brain function and concentration

  • Helps flush toxins from the body

  • Prevents dehydration and fatigue

Different Types of Drinking Water: Benefits and Drawbacks

1. Tap Water

Tap water is the most commonly available source of drinking water in many households.

Benefits

  • Easily accessible

  • Cost-effective

  • Usually treated according to government safety standards

Drawbacks

  • May contain chlorine or trace contaminants

  • Water quality varies by location

2. Bottled Water

Bottled water is a popular choice for people on the go.

Benefits

  • Convenient and portable

  • Available in various purification levels

Drawbacks

  • Generates plastic waste

  • Can be expensive compared to tap water

  • Quality varies among brands

3. Mineral Water

Mineral water is sourced from natural springs and contains naturally occurring minerals.

Benefits

  • Rich in calcium, magnesium, and other minerals

  • May support bone and heart health

Drawbacks

  • More expensive than regular water

  • Packaging contributes to environmental waste

4. Filtered Water

Filtered water passes through filtration systems designed to remove impurities.

Benefits

  • Improves taste and odor

  • Removes contaminants and sediments

Drawbacks

  • Requires filter replacement and maintenance

  • Initial installation cost

5. Well Water

Well water comes directly from underground sources.

Benefits

  • Often free for households with private wells

  • Natural source of water

Drawbacks

  • Quality depends on local geology

  • Requires regular testing for contaminants

6. Distilled Water

Distilled water is purified through a distillation process.

Benefits

  • Extremely pure

  • Free from contaminants and microorganisms

Drawbacks

  • Lacks beneficial minerals

  • Not ideal as the sole long-term drinking water source

RO vs UV Water Purifiers: Which is Better?

Choosing the right water purifier is essential for ensuring safe drinking water. The two most common purification technologies are Reverse Osmosis (RO) and Ultraviolet (UV) purification.

What is RO (Reverse Osmosis)?

RO technology uses a semi-permeable membrane to remove dissolved impurities from water.

Advantages of RO Purification

  • Removes up to 99% of contaminants

  • Eliminates heavy metals, salts, chemicals, and microorganisms

  • Improves water taste and quality

Disadvantages of RO Purification

  • Produces wastewater

  • Requires electricity

  • Removes beneficial minerals along with contaminants

  • Higher maintenance costs

What is UV Water Purification?

UV purification uses ultraviolet light to destroy bacteria, viruses, and other harmful microorganisms.

Advantages of UV Purification

  • Highly effective against germs

  • Energy-efficient

  • Does not alter water taste

  • No wastewater generation

Disadvantages of UV Purification

  • Does not remove dissolved salts or chemicals

  • Ineffective against physical impurities

  • Requires electricity to operate

Key Differences Between RO and UV Water Purifiers

Which Water Purifier Should You Choose?

Choose an RO purifier if:

  • Your water contains high TDS (Total Dissolved Solids)

  • Water has heavy metals or chemical contamination

  • You need comprehensive purification

Choose a UV purifier if:

  • Water has low TDS levels

  • The main concern is bacteria and viruses

  • You want an eco-friendly option with no water wastage

Many modern water purifiers combine RO, UV, and UF technologies to provide maximum protection and better water quality.

Conclusion

Drinking enough water every day is essential for maintaining good health and preventing dehydration. While the general recommendation is around 2–3 liters daily, individual requirements depend on body weight, activity level, and environmental conditions.

Understanding the different types of water and choosing the right purification system can help ensure access to clean and safe drinking water. Whether you choose tap water, mineral water, filtered water, RO, or UV purification, the goal should always be to stay hydrated and protect your health.

By making informed decisions about water consumption and purification, you can enjoy better health, improved well-being, and a healthier lifestyle.

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