The Company

WABAG Switzerland

WABAG Water Technology Ltd.

Bürglistrasse 31
CH-8401 Winterthur

Tel. +41 (52) 218 14 14            
Fax +41 (52) 218 14 99

Executive management:

Peter Hartmann (CEO)
Marcel Frank (CFO)
Dr. Gerhard Ryhiner (COO)


The WABAG location in Winterthur has long traditions. Indeed, its roots reach back to 1834 and the founding of the “Gebrüder Sulzer AG” company, which from the 1960s consolidated its activities and in a far-sighted move began to specialise in environmental technology plants. The water and wastewater technology areas emerged from the former Pumps Department of Gebrüder Sulzer AG and were integrated into the environmental activities of Sulzer Chemtech, which was founded in 1993.  Following the purchase of Sulzer Chemtech’s Environmental Technology Department in 1996, for the next three years water and wastewater business was conducted under the name CT Umwelttechnik AG.

WABAG Water Technology Ltd. in Winterthur is the largest supplier of drinking water and wastewater treatment plants in Switzerland and has completed over 100 municipal and industrial projects, including virtually all the country’s large lake water treatment plants and other modern facilities.  In addition, the company is also internationally active with a focus on western and southern Europe. Plants from Switzerland are also in operation in CEE states and Asia (e.g. China, Kirgizstan).

The Winterthur location has a workforce of over 40, which is employed in the areas of sales, engineering, project management and R&D. The company portfolio includes planning, design, completion, start-up and servicing for everything from system components to turnkey plants.

The company also forms the WABAG Group’s technology competence centres in the areas of drinking water (multi-barrier systems), biofiltration (BIOPUR®), moving bed processes (FLUOPUR®) and technologies for removal of micropollutants (BIOZONE®, CARBOPUR®, PACOPUR®).

WABAG Winterthur is an EN ISO 9001:2008 accredited company.

Please find more information on the website of WABAG Water Technology:

Project highlights:

Water treatment plants:

  • Horgen (CH): Lake water treatment plant with ultrafiltration, ozonation, activated carbon filtration and final disinfection, 1,200 m³/h
  • Sonzier (CH): Switzerlands largest spring water treatment employing ultrafiltration technology, 900 m³/h
  • Cudrefin (CH): Extendable lake water treatment plant, 140 m³/h
  • Männedorf (CH): Switzerland’s most modern drinking water treatment plant through use of innovative membrane filtration
  • Wave 21: research project for the optimisation of drinking water treatment processes

Wastewater treatment plants:

sustainable solutions. for a better life