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Waste Water Treatment Plant (WWTP) belong to the so-called -critical infrastructure-, which are so essential that their continued operation is required to ensure the security of a people. Energy is the most important operating utilities of WWTP. The specific electric energy consumption of WWTP depending on many factors including the inflow quality, WWTP-s scale, the technology used and climate. High energy consumption indirectly produces ecological damage, accelerates the energy crisis, and increases carbon emissi...

Precipitation is the main source of recharge of water resources, thus guaranteeing their renewability. Not only hydrometeorological changes, but also anthropogenic factors exacerbate the above-mentioned effects. The increase in the level of investment seen especially in recent years in urban agglomerations through the intensification of development, increased development of impervious and paved surfaces, the use of vacant land, and thus the reduction of biologically active areas has resulted in an increase in rain...

Due to the relatively different conditions of small and large water supply companies functioning, there are significant differences in the reaction, progress and consequences of the crisis situations. The specificity of small company requires an individual approach in the area of crisis management, for instance due to limited financial and technical resources. Admittedly, small water companies are particularly exposed to the negative consequences of a possible crisis, but from a large part they show greater flexib...

Radon is dissolved in ground water and can be transported from the source with water into the buildings. Subsequently indoors, when water is exposed to air, radon is released. Showers and sprays are a prime release method and the greater the water usage, the greater potential radon problem may occur. Outdoors, radon is quickly diluted to very low, not problematic concentrations but indoors, it can concentrate significantly. Although radon in indoor air is indicated as the second leading cause of lung cancer, not e...