New Thermal Mineral Water from Aguas (Penamacor, Central Portugal): Hydrogeochemistry and Therapeutic Indications

Lm Ferreira Gomes,Aj Santos Silva,Mtd Albuquerque,Imhr Antunes

doi:10.1088/1755-1315/221/1/012025

Lm Ferreira Gomes, Aj Santos Silva + Show 2 more

Open Access

https://doi.org/10.1088/1755-1315/221/1/012025

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Abstract

Thermal mineral waters are a potential resource in the local and economic development of a region. The thermal area of Termas das Águas is in the inner region of central Portugal and its grant will enable the exploration and exploitation of this water resource for medical and therapeutic purposes through a thermal medical SPA. In Portugal, the classification and legalization of a thermal unit must provide a natural mineral water resource, recognized by Portuguese Energy and Geology General Directorate and integrated in a concession granted by the Portuguese Government. For this purpose, it will be necessary to have available mineral water, with physico-chemical and microbiological, temporal stability, ensuring water’s high quality. The purpose of a certified mineral water includes a detailed geomorphological, geological and hydrogeological characterization of the survey area, as well as the water’s compositional temporal stability. Only after the recognition conferred by the national agency as a natural mineral water, it is possible to start a medical-hydrological study, for this resource. This process follows an experimental period of 3 years, during which it is implemented the different and specific balneotherapy techniques associated with the therapeutic features of the mineral water. A final report, to be submitted to Portuguese General Directorate for Health, will gather the main results and conclusions, regarding the benefits of this natural resource on human health, and allow its inclusion as an official medical thermal SPA in the Portuguese Normative Decrees. The main subject of this research is the geological and hydrogeological characterization of Termas das Águas aquifer, as well as the mineral water quality study (AM4 – well). The main topics for the medical hydrological study, mainly related to rheumatic and respiratory diseases, are also presented to the medical SPA of Termas das Águas.

Highlights

Mineral waters that naturally ascend to the surface of the Earth, as spring or well waters, have always been a source of curiosity for mankind throughout history
Medical-Hydrological studies The medical-hydrological study was organized in the following specialities: i) knee pain due to gonarthrosis; ii) rhinosinusitis; iii) lower back pain caused by lumbar spondylarthrosis
The groups with knee pain due to gonarthrosis and rhinosinusitis studies for gonarthrosis and for rhinosinusitis were carried out between June and November 2012, while the group with lower back pain caused by lumbar spondylarthrosis between May and November 2014 [14]

Summary

Introduction

Mineral waters that naturally ascend to the surface of the Earth, as spring or well waters, have always been a source of curiosity for mankind throughout history. The thermal mineral water of Termas das Águas is abstracted from a vertical well (Fonte Santa well - AM4), 328 m deep, emplaced in a slightly altered coarse-grained granitic rock. The physico-chemical parameters of the thermal water of Termas das Águas indicate an alkaline, low mineralized water (222–324 mg/L) with substantial amounts of silica (15% of the total mineralization) (Table 1). This thermal water shows a significant geochemical stability, with a lower pH (pH range: 7.18- 8.23; Table 1) and fluoride content (F-=2.3-3.9 mg/L) than the observed in the main Portuguese thermal waters.

Conclusions

Findings

There is a relation between the number of days of