Solvatten: the solar water purifier already operating in 20 countries

Solvatten (literally “solar water”) is a water purifier similar in appearance to a gallon and which uses UV radiation from the sun for energy. Can be filled with 10 liters of water and water ready for human consumption can be obtained after about 3-5 hours (there is an indicator that changes from red to green when the water reaches the required temperature).

In this way, the spread of diseases such as diarrhea, one of the main causes of infant mortality, is avoided. In addition, thanks to its special filter, very cloudy water can also be purified.

Operation Solvatten

According to its inventor Petra Wasdrom, she created the product with the people living with dirty water in mind around the world and the children who suffer from it, which although easily preventable, people living with a lot of sun, do not use it. The Solvatten has been tested in Kenya and Nepal with good results and the responses have been positive due to its ease of use, as no technical knowledge is needed to understand how to use it.

According to Solvatten, they estimate that more than 300,000 people in 20 different countries use their water purification canisters.

How does Solvatten work.

How does Solvatten work

The drum is filled with water, which has a filter to prevent the passage of large impurities. Then it opens in the middle like a book to put it directly in the sun.

The membranes let in the sun’s ultraviolet rays, which destroy the DNA of bacteria in the water. The tank heats the water to 75 ° C.

The purification process takes between 2 and 6 hours, depending on how much sunlight the drum is exposed to.

Solvatten delivers hot, purified water where it’s needed, with no fuel combustion and no need for chemicals.

It has a durability of between 7 and 10 years. A single drum meets the needs of a family of 5 to 6 members.

A really useful invention that can certainly help reduce the impacts and consequences of using firewood, as well as reduce the high rate of infant mortality.

The idea was born over 20 years ago. Its inventor, Petra Wadstrom, is one of Sweden’s most renowned environmentalists. Wadstrom saw how Indonesian women and children contracted diseases from drinking unsanitary water, so he wanted to give them a solution by providing them with a method to purify their water.

You can see more information about this product on its website: