As a result, the WISY rainwater filters receive an annual average of approx. Filter 90% of the total rainfall and direct it towards the cistern and use 10% to continuously rinse the filter and keep it clean. This residual water volume automatically transports the dirt into the sewer.
In average, about 120 litres of mains water are used per day and person. Shrinking groundwater ressources result in rising prices for tap water.
Since tap water is of controlled quality it is sometimes too precious for many simple applications. A cost-effective and sustainable alternative to the use of groundwater and mains water supplies is the use of rainwater with the help of a rainwater system.
In this category you will find everything you need to know about rainwater utilisation.