The greatest storages of layer waters (rétegvizek) are the alluvial cones that formed in the quaternary period. If the water of the rivers infiltrates through the sand and marble layers, it is called water filtered at the bank (parti szűrésű víz). For instance, the water demand of the inhabitants of Budapest is satisfied from this water stock (vízkészlet).
A group of layer waters: artesian waters (artézi vizek). These waters come to the surface because of the high pressure.
By the 19-20th century the demands have been satisfied from the waters of the wells, these are called ground waters (talajvíz, remélem ez a jó szó rá). This was a serious source of infection, no doubt. 5-10% of the extracted water is still ground water.
If the water table (the surface of the ground water, talajvíztükör) elevates above the ground, then it is called inland water (belvíz).
Another group of layer waters: thermal waters (hévíz). If the temperature reaches 30°c.
At karstic areas where water infiltrates through the surface, the space waters (résvizek) appear in the form of cold or warm karstic springs. They have had an important role in the drinking water supply of Miskolc and Pécs for a long time. However, they are still present at the spas of Hévíz, Eger and Buda.
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