Is it good to drink 3 litres of water a day? Find out how much you really need
04 August, 2025

A person’s requirement for water varies depending on their physical characteristics, body mass, and level of activity. Although it may vary depending on each case, numerous specialists suggest that a normal adult drink 2.5 to 3 liters of water each day.
This quantity enables the body to maintain proper hydration, remove contaminants, regulate body temperature, and ensure that the vital organs are functioning correctly.
Many people, however, fall short of this threshold, which can lead to a decrease in both mental and physical performance as well as fatigue, headaches, and skin rashes. Staying properly hydrated is crucial for long-term disease prevention as well as everyday welfare.
¿It is necessary to drink 3 liters of water a day?
Drinking this amount of water helps the human body perform vital functions.
- Staying hydrated enables the correct absorption and operation of vitamins, carbohydrates, and proteins.
- In a well-hydrated environment, the enzymes operate efficiently.
- While toxic substances are removed by the orina, vital nutrients are able to enter the cells.
- The body’s defense system is strengthened.
- Our skin seems more radiant, and we feel generally better.
- Adequate water consumption also affects the body’s capacity to regulate body temperature, build muscle mass, and remove fat.
Water consumption by healthcare institutions, for men, women, pregnant women, etc.
Age and gender | IOM (L/day) | EFSA (L/day) |
0-6 months | 0,7 | 0,10–0,19 L/kg |
7-12 months | 0,8 | 0,8–1,0 |
1-3 months | 1,3 | – |
1-2 years | – | 1,1–1,2 |
2-3 years | – | 1,3 |
4-8 years | 1,7 | 1,6 |
9-13 years (men) | 2,4 | 2,1 |
9-13 years (women) | 2,1 | 1,9 |
14-18 years (men) | 3,3 | 2,5 |
14-18 years (women) | 2,3 | 2,0 |
≥19 years (men) | 3,7 | 2,5 |
≥19 years (women) | 2,7 | 2,0 |
Pregnancy (14–50 years) | 3,0 | 2,3 |
Breastfeeding (14–50 years) | 3,8 | 2,7 |
These figures always depend on our own needs, as mentioned above. It is important to remember that not all water is the same. Water quality is just as important as quantity.
Water consumption in healthcare institutions
In hospitals and medical centres, water is essential for patient recovery and for use by healthcare staff. But the source of the water is crucial:
- Many institutions still rely on bottled water, which generates tonnes of plastic and has a high environmental cost.
- Tap water may contain chlorine, heavy metals or impurities, depending on the region.
- Atmospheric Water Generators (AWG) such as those from GENAQ guarantee pure water with no environmental impact, without the need for plastic or polluting transport.
What is the best water for your health?
It is time to ask ourselves what kind of water we are drinking and what impact it has on our health and the planet.
The problem with bottled water
Its characteristics are:
- Environmental impact: the plastic in these bottles leaves a mark on the environment. Much of this plastic ends up in the oceans or in natural landscapes.
- Quality not always guaranteed: they do not always meet quality standards, even if they appear to.
- Microplastic contamination: because it is in constant contact with plastic, bottled water runs the risk of containing microplastics.
- Dependency: there is a dependency on suppliers, as you need someone to supply you with bottles. At peak demand times, you may not have enough and create a dependency.
Tap water: a variable option
- In some cities it may be safe, but in many regions it contains chlorine, lime, lead or other contaminants.
- Its quality depends on the local infrastructure and the maintenance of the pipes.
Filtered water
Its characteristics are:
- High initial cost: filters involve a high initial investment.
- Regular maintenance: this type of solution requires regular maintenance, as the filters may not be completely safe.
- Does not remove all contaminants: the purification process does not always remove all contaminants, such as metals, viruses, or bacteria.
- Technical installation: it requires certain installations that not everyone can do, which means a higher cost.
AWG: The best choice for your health and the planet
GENAQ’s atmospheric water generators (AWG) provide the highest quality water from air without the need for plastic bottles or pollution.
Their advantages are:
- Quality and health: safe, high-quality drinking water.
- Autonomy: autonomous water generation without depending on the distribution network, rain, or tanker trucks.
- High efficiency: Reduced energy consumption per liter of water produced. Compatible with renewable energies.
- Sustainability: avoids the environmental impact of plastic and does not generate waste.
- Ease of installation: plug & drink equipment. They only need air and an electrical outlet to operate.
Comments