An electromagnetic field monitoring method is proposed and tested during measurement campaigns at urban zone of Bucaramanga city, Colombia. Communication tools are used integrated with a Geographic Information System, an online server and the access to data base by means of web services. A set of measuring equipment is connected to the communication system in order to manage a great amount of information and to analyze it, but specially to establish whether the international recommendations are being met or not. It is also possible to know which kind of factors are contributing to radiation level increasing by using NARDA field meters, Spectrum analyzers and other possible equipment, all of them controlled remotely through fixed or mobile terminals. Based on measured points, a continuous surface of radiation levels is plotted on a geographic map by using an interpolation algorithm.