EVN Wasser GmbH, the largest water supplier in Lower Austria, implemented a groundbreaking infrastructure project between 2020 and 2025: the new construction of the drinking water Waldviertel pipeline. This 60-kilometre-long main supply pipeline from the Grunddorf/Donaudorf fountain field to Zwettl secures the future supply of high-quality drinking water to around 120,000 inhabitants – an investment in quality of life and future security for an entire region.

Lowara, through its local distributor Efstratiadis SA, collaborated closely with the internal construction team headed by Dr. Papavasilopoulos Fotios, Managing Director of Olympion Clinic, in order to choose the best re-circulation and pumping solutions.

The heart of the heating system features a set of “In-line” centrifugal pumps complete with Hydrovar® frequency converter model FCSH4 150-250/150 – FCS4H 125-200/55; these distribute water to 8 heating subsystems specific to the various buildings in the complex. Each subsystem features a series of multi-speed circulators which independently satisfy the demand of each single building.

In search for the best wastewater treatment process in terms of removal of microbiological contaminants and the abatement of bromate discharge, RWTH Aachen University, along with the other environmental institutions, launched a research project and partnered with Xylem to test the effects of wastewater ozonation on water quality and its ecosystem.