The boring of the well started on November 3, 1965 and was completed on February 24, 1966. The common misconception spreading in the city in regards to the project was that hydrocarbons were being searched. In reality, geologists had already signalled the emergence of thermal water in advance. Initially, drilling in thick gravel was difficult to advance. At a depth of 2000 m, a 12 meter high water column broke out.
The water contains little sediment, high salt content, low hardness alkaline hydro carbonate, chloride-type iodine, fluorine thermal water. The source layer of the water is upper Pannonian gray sand. The temperature of the effluent water is 74 degrees C, with a flow rate of 1250 litres per minute.
In 1987, a second thermal water well was established near the Moson Danube. Today the spa uses both wells
Initially, the water flowed freely and anyone could bathe there. The water could be taken in any amount for home treatment. Then it started to be transported by the cistern carriage of the Lajta-Hanság State Farm to the Municipal-District Hospital, where an experimental unit was set up to test the healing effect of the water. Dr. Imre Fekete, director of the hospital and dr. Pál Péter, chief of rheumatology supported and carried out this activity in the building treating lung patients (at that time the infectology department). The results were highly promising and they successfully managed to have the local thermal water announced to be medicinal water by the health minister (726/Gyf.1967.)
The spa was allotted the garden of about 2 hectares for the construction of the thermal bath in December 1967. The spa officially opened on April 18, 1969. Bathing in it started the very next day.
A professional medical examination of the thermal water of Óvár revealed at an early stage what diseases it is suitable for. From February 1 to July 24, 1967, the experimental spa department operated with 18 patient beds and a small tiled pool. Patients usually bathed in water at 34-35 degrees Celsius for 15-20 minutes every two days. A total of 117 patients were studied over time. Primarily musculoskeletal patients were managed to be treated well for bone and joint disorders. Some informative cases were described separately of the healing of patients who had already visited other domestic spas. The water was also helpful with chronic inflammatory joint and muscular disorders, and musculoskeletal injuries caused by accidents. Many patients with bone fractures received after treatment with the water. It was used less to treat chronic inflammatory gynaecological conditions, but its suitability for healing had been established. Sprayed as inhalation was also found to be suitable for treating bronchitis, in certain cases of pulmonary dilatation, and in cases of illness of nasal and throat sinuses. It could also be used in the form of drinking to cure gastrointestinal diseases. In May 1968, a symposium on rheumatology was held in Mosonmagyaróvár, where participants could taste bottled medicinal water in natural and carbonated versions. It can be mainly used to treat stomach acid deficiency and hyperacidity, as well as bowel disorders. Due to its fluoride content, it can be used to prevent tooth decay in children. Its iodine content helps with certain thyroid diseases and the onset of calcification of the blood vessels. In view of the fluoride content it is not recommended to consume more than 3 dl a day during a longer drinking cure.
In February 1976, the spa was taken over to be managed by the City Management Company. After the political transformation, it turned into Flexum RT. Since 2007 it is the Flexum Production and Service Ltd. Over the years, the area of the thermal bath has been able to be expanded to 3.5 hectares. In 1981, the 33.3 meter pool was opened. In 1983, the 27 x 40-meter surface was covered with an American-style self-supporting tarpaulin, a unique solution in the country. By then, the total attendance had reached a quarter of a million. It was a new feature that more and more people were visiting from neighbouring Austria and Czechoslovakia. Austrian retirees became regular clients. At that time, mostly native Hungarian speakers visited from our northern neighbours. The number of foreign guests had already exceeded the number of domestic guests. At the same time, the floor space of the changing room was doubled in 1983, and in 1981 the heated corridor was rebuilt. Since 1983 there has also been a sauna available in the thermal bath.
The private company continued the thermal development vigorously; it completed the Aqua Hotel (2006) and built the new thermal bath building (2009). The three star spa hotels with 60 beds each fit well into the spa complex. The competition pool has been replaced by three small warm water wellness pools. These investments reinforced the medical character of the spa. After the installation of the 50 meter pool, the spa did not have an outdoor swimming pool. The 25-meter training pool, opened in May 2008, sought to fill this gap.
This year is a milestone in the life of the spa. Improvements began already in the second quarter of 2018. 2019 is the year of changes and improvements. The medicine section and the spa have been renovated. The exterior and interior of the spa shine in a whole new glory. Phase 1 of the Children’s Empire was launched in August 2019 and will be expanded with an additional pool in the summer of 2020. The renovation of the Aqua Hotel Thermal belonging to the spa has also begun. In the second half of 2020, a whole new sauna world will be created. In addition, the whole complex is being given a new look. The Aquasol Resort ****opened in early 2019.