The 65-68 °C medicinal water, which is very rich in minerals, is continuously building the compelling, crenelated white formations. The calcium-magnesium-hydrogen carbonated medicinal water, which also contains sodium, and metasilicic acid, has been classified as one of the best in its category. Over the years the travertine hill became the symbol and trademark of the area. There are two similar ones in the world to this unique natural formation in Europe, in Pamukkale, in the Asian part of Turkey, and in Yellowstone National Park, USA. The first well was drilled in 1961 in searching for oil and gas, the second drilling was done in 1987. In August 2011, half century anniversary was celebrated in the framework of the Medicinal Water Feast. After their sanctification in fall of 2010, the wells were named Mária and Vendel.
The holy picture of Wonder-working Mária is in the catholic church of Egerszalók, while Saint Vendel is the patron saint of the springs and wells.

The famous bath of Egerszalók has been renovated with the installation of Uponor systems

The facility has 1,900 m2 of water surface in a total of 17 outside and inside pools. Sit-bath pools, effervescent bath, fun pools, children's pools and slides provide an enjoyable pastime for all ranges. In the above facility, the Uponor pre-insulated piping system, and the Uponor underfloor heating and water supply systems were installed, which have the advantage of the cross-linked Pe-Xa supply pipes. Besides the memory effect, the cross-linked Pe-Xa pipe is highly resistive to the various deposits on the internal surface of the pipe. This is necessary, since the springing well water has a very high mineral content, which may deposit quite rapidly in the traditional systems, risking the safe operation of the systems. The state-of-the-art Uponor supply pipe systems have to meet the highest requirements for safety, durability, loading capacity and energy efficiency. Pipelines consist of Pe-Xa operating pipes covered by EVOH layer against oxygen diffusion, and corrugated protective pipes to provide the pipeline protection against mechanical damages. The operating pipe is insulated with multi-layer, non-aging, closed-cell Pe-Xa foam. The utilization of these can be different by different building types, they are often used in hotels, office and commercial buildings, in agricultural areas and in residential houses as well. Besides the heating or cooling medium, these pipes can carry drinking water, service hot water, food, or even chemicals. By using the pre-insulated pipeline system made of Uponor Pe-Xa operating pipe, long-term pipelines can be installed, which can transport the liquids inside and outside of the building with minimum heat loss. The system provides a complete solution for heating, cooling, cold and service hot water systems' tasks.