The minimum order size is 72 units (one pallet).  On the other hand if you like the idea of helping to scale up a present project, feel free to support by making a donation to one of the project organisations.

Solvatten can be a valuable water-treatment tool for vast numbers of people around the world where there is polluted water and energy sources are scarce, yet there is a lot of sun. Its use will bring health and environmental benefits and improve quality of life and opportunities for many.

Contact Solvatten if you wish to find out more about sponsorship.

The Solvatten system is: safe, reliable, simple, sustainable, cost-effective, socially and culturally acceptable.

Solvatten Solar Safe Water System uses energy from the sun to inactivate and kill the micro-organisms that cause water-borne diseases. The product’s functionality is based on three well-documented methods for treating water – filtration, heat pasteurisation and UV-disinfection.

Solvatten inactivates micro-organisms which cause waterborne diseases and also filters out macro-organisms. The output is safe water according to WHO’s guidelines (<1 E-coli/100ml water).

Water samples with more than 200,000 E.coli/100 ml have successfully been treated.

Turbidity up to 40 NTU and the filter reduces the turbidity by about 35%. If the water is very turbid, let it sediment or and pre filtrate.

The dimensions are 36 x 47 x 13 cm and the weight is about 2.70 kg.

2-4 hours when the sun is shining, 5-6 hours when it is cloudy. During optimal conditions Solvatten can be used three times a day. 30 liters/ day. Solvatten does not work when it is raining – in these conditions we recommend rain-water harvesting.

The containers have been specially designed to maximise the rate at which the water temperature rises, and amount of UV radiation to which the water is exposed.

In countries with a lot of sunshine but not necessarily warm weather. In mountain areas as well as lowlands.  In cooler countries (e.g. Sweden) on sunny days in spring and summer.

10 litres, which is the capacity of the containers. If the weather is good Solvatten can be used two or three times a day.

This is easy to do and a folded piece of local fabric (eg sari) can be used.

If handled with care, Solvatten will last for many years.

No, there is no change.

Yes, to warm water for personal hygiene, washing and rinsing food etc.  This will help prevent infections and could be especially useful in health settings eg for midwives. You can use Solvatten to pre heat the water before cooking food.

If the system is used to warm water then other energy sources (eg firewood or kerosene) can be replaced.  This will bring environmental benefits such as reduced deforestation, soil erosion and green-house gas emissions.  Also the plastic material can be recycled after long-term use and there are no chemicals involved in the water treatment process.

Yes; the material used in Solvatten is approved by the FDA.

No, the material used withstands the heat and the UV light without harmful side effects.

Yes, it is very straightforward and graphic instructions are attached to the Solvatten containers.

Where there is no shade, no wind or draught. Directed towards the sun.

Not when the sun is high in the sky, but if the sun is lower (eg in winter or in more northerly countries) you have to change the position of Solvatten up to two times during use.

Yes, the SVI-10 indicator shows when the treatment process is completed and the water is safe.

Yes, however WHO recommeds consumtion within 24 hours for any treated water to avoid recontamination.

By adding a handful of dry beans, rice or lentils with some water to the container, shaking and rinsing.  Soft wool balls can also be used for this method. Do not use sand as it may scratch the surface. Do not use detergents.

The technology is suitable for use in many contexts e.g. schools, health centres, the tourist industry, disaster relief etc.