Top recommendations
A selection of our wide product range
Product overview
Our top categories
Our product portfolio
We are your right contact for:
Rainwater filter
All WISY filters are low-maintenance and self-cleaning. Due to the vertical filter mesh, potential dirt is easily drained away and solids stay away from your rainwater system.
More infoPumps & Pump controller
Suction and pressure pumps perfectly designed for the conditions encountered when transporting rainwater. Powerful and 97 % more economical in electricity consumption thanks to the WISY pump controller!
More infoFloating suction filters
Suction filter that floats automatically and extracts rainwater at the cleanest water depth. Made of stainless steel, they withstand heavy use. Protects pump and rainwater unit.
More infoRainwater units
By integrating cistern water, a rainwater unit enables you to use your own rainwater. The automatic mains water top-up constantly guarantees the supply with clear water.
More infoRain storage tanks, cisterns & rain barrels
The cistern for storing the collected rainwater is an important component of the rainwater system. WISY offers you suitable storage units for permanent use.
More infoBreak tanks and mains water top-up systems
We have the right break tanks and mains water top-up systems to safely separate process water from the public supply network for commercial or industrial use.
More infoCommercial & Industrial Filters
If pressure ever arises, we can deliver. Our industry-suitable vortex fine filters are available pressure-tight up to 6 bar on request. Rainwater harvesting with us also commercially!
More infoRainwater
Overflows
WISY offers a multifunctional overflow. Optionally with various options, e.g. backwater protection and small animal protection.
More infoSince 1989: WISY quality
Made in Germany
In many countries, tap water is monitored and treated to ensure drinking water quality at all times. However, a significant part of it is used for applications which do not require drinking water quality such as e. g. flushing toilets.
Therefore, we have specialised in developing first-class technology to make rainwater available for a wide range of applications. With our help, you can reduce your water costs and make a valuable contribution to protecting the environment.

References
A selection of our worldwide projects

Google Headquarters
New York, USA

Sheraton Hotel
Kuala Lumpur, Malaysia