can you drink rainwater

Can You Drink Rainwater from the Sky?

Some people may believe that rainwater is healthy because it's a natural source of water that's free from many of the pollutants and additives found in other sources of drinking water. So really can you drink rainwater from the sky? While rainwater is generally considered safe to drink, there are some factors to consider that can impact its safety, such as pollution or contamination from various sources. In this article, we will explore the topic of is it safe to drink rainwater?

1. What is Rain Water?

In order to understand can you drink rainwater, we must first answer the most basic question: What is rainwater? Rainwater is water that falls from the atmosphere in the form of precipitation, such as raindrops, hail, sleet, or snow. It originates from the Earth's water cycle, which involves the evaporation of water from oceans, lakes, and rivers due to the heat of the sun, followed by the condensation of water vapor into clouds and eventual precipitation.


Rainwater is considered a natural source of freshwater and can be collected and used for various purposes, such as drinking, irrigation, and industrial processes. It is often preferred for these uses over other sources of water, as it is free from many of the contaminants found in groundwater and surface water.

2. Difference Between Rain Water and Tap Water?

Tap water in many countries can be drunk directly, so we can learn about can you drink rainwater through difference between rain water and tap water. Tap water is the water that comes out of our faucets and is supplied by public water systems or private wells. It is treated to remove impurities and contaminants that may be harmful to human health, such as bacteria, viruses, chemicals, and heavy metals. Tap water is typically safe for drinking and other domestic uses, but the quality may vary depending on the location and the source of the water.


Rainwater and tap water are two different sources of water that can be used for various purposes. Rainwater and tap water differ in several ways, including their sources, composition, and treatment. Here are some of the main differences between the two:

Sources: Rainwater is a natural source of water that falls from the sky as precipitation.
While tap water is typically sourced from underground aquifers, lakes, or rivers.
Composition: Rainwater is generally considered to be "soft" water, as it contains very low levels of dissolved minerals, such as calcium and magnesium. And rainwater is generally free from the chemicals and additives that are commonly found in tap water, such as chlorine and fluoride.
While tap water can be either "hard" or "soft," depending on the location and source. Hard water contains high levels of dissolved minerals, which can cause scaling and other problems.
Treatment: Rainwater is not typically treated before use, except for basic filtration to remove large particles and debris.
While tap water is usually treated with chemicals, such as chlorine, to kill bacteria and viruses, and may also be filtered to remove other contaminants, such as lead, pesticides, and nitrates.
Availability: Rainwater is not always available, as it depends on the weather patterns and the location.
While tap water is typically available at all times and can be accessed through a network of pipes and distribution systems.
Sustainability: Rainwater is a more sustainable and eco-friendly source of water than tap water, as it does not require energy-intensive treatment and distribution systems.

is it safe to drink rain water

Overall, the main difference between rainwater and tap water is that rainwater is a natural, untreated source of water that is generally free of chemicals and additives, while tap water is sourced from various locations, treated with chemicals, and distributed through a network of pipes and systems. 


In fact, the question of can you drink rainwater depends on different situations. Read on and you'll understand these scenarios.

3. Is It Safe to Drink Rain Water from the Sky?

Now we are going to introduce can you drink rain in detail. Rainwater is generally safe to drink in some circumstances. However, it is important to note that rainwater can also carry harmful contaminants depending on a variety of factors such as pollution, the environment in which it falls, and the storage conditions.


If you want to know can you drink rainwater from the sky, you must know what happens if you drink rain water.

What Happens if You Drink Rain Water?

Drinking rainwater can have various effects on your health depending on the quality of the water.


If you drink contaminated rainwater, it can cause various health problems such as vomiting, diarrhea, fever, and abdominal pain. Rainwater can contain harmful bacteria, viruses, and chemicals, which can lead to more severe illnesses. Drinking contaminated rainwater can also lead to dehydration, as your body may try to expel the contaminants through vomiting and diarrhea, resulting in fluid loss.

Can You Drink Rain Water to Survive?

If you are in a survival situation where clean water sources are scarce, drinking rainwater can be a viable option. 


However, it is essential to ensure that the rainwater you drink is free from contaminants before consumption. If you are unsure about the quality of the rainwater, it is recommended to purify it by boiling or using a filtration system(such as water purifiers for home). It is the answer to the question that can you drink rainwater to survive.

How Long Can You Store Rainwater for Drinking? 

After you make it clear that it is safe to drink rain water that you collect, you should learn how long can you store rain water for drinking. Rainwater can be stored for drinking purposes for an extended period if proper precautions are taken. The length of time that rainwater can be stored for drinking depends on several factors, such as the quality of the water, the storage container, and the storage conditions.


It is recommended to use the stored rainwater within six months to ensure its quality. Over time, bacteria and other microorganisms can develop in the water, affecting its taste and smell. Therefore, it is essential to periodically check the water's quality and replace it if necessary.


There are some tips you can follow when you store rainwater for drinking:

  1. If you plan to store rainwater for drinking, it is recommended to use a food-grade container. These materials are safe for storing water and will not leach any harmful chemicals into the water. It is also important to keep the container clean and dry to prevent the growth of bacteria and other microorganisms.
  1. The storage conditions are also crucial in determining how long rainwater can be stored for drinking. The container should be stored in a cool, dark place away from direct sunlight, which can promote the growth of algae and other organisms. The temperature of the storage location should also be stable to prevent the growth of bacteria.

4. How to Make Rain Water Drinkable?

As mentioned earlier, can you drink rainwater is divided into different situations. If you are not sure that the rainwater you collect is safe, and you have to drink it sometimes. You need to take some action.


In order to drink rainwater safely, there may be questions about can you purify rainwater. The answer is yes, we can use some purification methods to purify and filter rainwater to achieve the purpose of consumption.

Can You Boil Rainwater to Drink?

Can you drink rainwater that is boiled? The answer is yes, boiling rainwater is an effective way to make it safe for drinking. Boiling rainwater can be particularly useful in emergency situations where other methods of water treatment may not be available.


Boiling water is a well-known method for killing most of the harmful bacteria, viruses, and other microorganisms that may be present in the water. Boiling water for at least one minute can kill these microorganisms and make the water safe to drink. However, it is important to note that boiling does not remove any chemical contaminants that may be present in the water. If the rainwater has been exposed to pollutants or chemicals, boiling alone may not be sufficient to make it safe for consumption.

Can You Drink Filtered Rainwater?

Can you drink rainwater that is filtered? It depends on how the rainwater is filtered and the quality of the water before filtration.


Rainwater is generally considered safe to drink if it is collected from a clean and uncontaminated source and then properly filtered and treated. However, rainwater can contain contaminants such as pollutants, bacteria, viruses, and other microorganisms that can make it unsafe for consumption.


If you want to drink filtered rainwater, it's important to use a high-quality filtration system that is designed specifically for rainwater and can effectively remove impurities.


Ways to Filter Rainwater for Drinking Purposes:

  • Distillation: This process involves boiling water and then collecting the steam as it condenses. The condensed water is pure and free of impurities. However, distillation can be an energy-intensive process.
  • Filtration: A high-quality filtration system can effectively remove impurities from rainwater. Look for filters that are designed specifically for rainwater and can remove bacteria, viruses, pollutants, and other contaminants.
  • Reverse Osmosis: This process involves forcing water through a semipermeable membrane that removes impurities. Reverse osmosis is an effective way to remove salts, minerals, and other contaminants from the water.
  • Ultraviolet (UV) Disinfection: UV light can effectively kill bacteria and viruses in water. A UV disinfection system can be used to treat rainwater after it has been filtered.

Through the above content, we have a detailed understanding of what conditions can you drink rainwater.

5. Best Way to Make Rain Water Safe for Drinking - Use RO Water Purifiers

The RO water purifier produced and sold by Membrane Solutions uses a high-precision reverse osmosis membrane filter element (pore size of about 0.0001 micron), which can filter out vinyl chloride in water and remove up to 99% of harmful pollutants. It can provide you with safe, clean and high-quality drinking water.

 can you drink rain water from the skycan u drink rain water

The picture shows countertop reverse osmosis filter and under sink reverse osmosis filter produced and sold by Membrane Solutions. You can click the corresponding picture to learn about related products.


So when you have doubts about can i drink rain water, in order to ensure the safety of the rainwater you collect, you need to filter the rainwater before drinking, including boiling, purification, and other methods. Of course, using the RO water purifier for purification is the most efficient and simple method.


Related articles: What Happens if You Drink Salt Water? & Can You Drink Salt Water with a Membrane Solutions Water Filter Straw?

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