Covid-19 disease incidence air quality index assessment of water quality atmospheric air climatic factors correlation analysis environmental hazard mining and chemical enterprise nitrates phosphates prognosis models quality of life quality parameters of environmental objects quality standards surface waters tailings the environmental index the index of pollution components in the salt composition the index of specific indices of toxic and radiation action the prognosis of the environment state the tropho-saprobiological index waste water pollution water security атмосферне повітря безпека водних ресурсів відходи гірничо-хімічна промисловість екологічна небезпека екологічний індекс