The birth of urban geologic maps (which are considered environmental-geologic themed maps) and the progress in development of their content and design were driven by the growing importance of addressing environmental problems, and the increasing complex utilization of urban areas. Therefore, MÁFI and, since 2012, the MFGI Department of Environmental Geology, have prepared a series of maps for the local authorities of Budapest. These maps usually focus on the problems of urban planning from the viewpoint of geology, hydrogeology, and water chemistry, and as experience shows, they prove to be excellent tools in decision-making processes. This paper examines the chemical content of groundwater, which is one of the main indicators of the state of the environment. According to the everyday experience of the authors it is very useful to understand the state of both quality and quantity of subsurface and surface water. In a recent series of research work we measured the zinc, copper, boron and arsenic level of the groundwater in 10 districts of Budapest.
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KvVM-EüM-FVM regulation 6/2009. (IV. 14.) (Hungary): A földtani közeg és a felszín alatti víz szennyezéssel szembeni védelméhez szükséges határértékekről és a szennyezések méréséről (Legislation in force on the limit values of groundwaters). - http://www.complex.hu/jr/gen/hjegy_doc.cgi?docid=A0900006.KVV
MFGI-MÁFI 2001–2013: Budapest kerületeinek településgeológiai térképsorozata (Urban geological map series of Budapest’s districts): III, IV, VIII, XI, XIII, XIV, XV, XVI, XVIII. - MFGI Dep. of Environmental Geology. Manuscript.
'', in Budapest kerületeinek településgeológiai térképsorozata , (2001 ) -.