How to store rainwater

Four easy steps to keep your rainwater clear for a long time

WISY filtering principle

What makes our filters so unique:
The vertical filter mesh provides automatic dirt removal and enables an efficient self-cleaning. Our animation shows you how it works...

WISY is supplying BERLIN with rainwater !

More than 500,000 rainwater filters from WISY are in use worldwide.
What could we do with 42 million m³ of rainwater ?

Clear Rainwater for your Flowers

Rainwater is your gardens first choice for irrigation.

Rainwater Harvesting in Sports Arenas: Maracanã

2016 Olympic Games and 2014 Football World Cup:
Perfect playing turf through rainwater harvesting in Rio de Janeiro

We have been designing and manufacturing low-maintenance filters with stainless-steel mesh since 1989. These filters are in use all over the world - both in production processes and modern rainwater harvesting systems.

WISY's energy-saving pump controllers for water pumps are breaking new ground when it comes to power consumption in standby mode. Our product portfolio is completed by our break tanks for separating the process water circuit from the mains water supply.

We are the world's leading engineers of rainwater harvesting equipment. We are offering an entire system for filtering and storing rainwater cleansed in four stages, as well as all the other components you will need to create your own reliable water supply.

WISY quality - Made in Germany

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