Easy to maintain

Use of Solvatten does not require purchase of any supplies or spare parts.  The filter can easily be removed for cleaning, and can be replaced by several layers of a fine local cloth.  The outside of the Solvatten unit should be rinsed or wiped, without detergent, and the inside can be cleaned with some locally-produced wool balls or a handful of rice/beans, and a little clean water.

Limitations

Salty water cannot be made drinkable in Solvatten, neither can chemical pollutants from industry be removed.  If arsenic, iron or fluorides are naturally present in the water then another water treatment solution should be used prior to treatment in Solvatten.