摘要:An ecological catastrophe consists in a massive change in natural conditions that lead to a change in the environment and the death of living organisms. Disaster can be caused by both natural processes and human actions. Losses after such disasters are often irreparable. Economic reasons worse the ecological situation. Wastewater treatment plants are very expensive, so industrialists often prefer to save on and forget about the environment during the construction and operation of new production facilities. The pursuit of immediate profits without thinking about tomorrow, undoubtedly, deepens the crisis in the field of ecology, thereby resulting in environmental disasters. The subject of this study is global environmental disasters. The purpose of the study is to identify the influence of the negative impact of substances on the environment. Methodology. To study the topic, the world environmental disasters and the damage caused by their impact on the environment were systematized. Results - the damage (harm) from the negative impact on the environment was revealed, the calculation formulas were given.