The present-day war activities show their most evident consequence: deaths, war losses, destruction of residencies, ruination of industrial and infrastructure objects, huge migration flows, critical impairment of economics, worsening of social state of the major portion of population, and provocation of significant threats to the environment. War impacts on the environment should be carefully studied and analyzed, as well as measures to help eliminate and level the same should be elaborated since environmental problems force the mechanisms that threaten social and economic sustainability. All regions and sectors of Ukrainian economics as of these days are under continuous threat of stable ecological pollution raised by war activities. Ecosystem disturbance, destruction of ecologically dangerous industrial objects, significant worsening of sanitary-hygienic parameters of potable water, disturbance of activity within natural reserves, threats of radioactive pollution - these are the war-resulting problems that cause today the biggest anxiety. The territories of the oblasts involved into active war operations suffer shelling, bombardments and movements of military mechanisms. This causes uninterrupted pollution of atmosphere, water and soils. It seriously impacts biodiversity, makes flora and fauna fall, harvests be lost, potable water reserves decreased, and landscapes changed. A certain portion of arable lands is already taken out of economic circulation, and sowing on a rather big territory is still impossible due to mines. Mass shell explosions cause dust and gas clouds containing some poisoning gases and suspensions. Within a single period of time, the surrounding atmosphere is filled with huge portion of gaseous and solid pollutants that migrate with air flows and react thus forming dangerous combinations that fall on different surfaces, pollute plants, soils and water. The dangerous factors of pollution are as follows: air shock waves; ammo fragments; dust and gas clouds; smoke. Anthropogenic environmental pollution manifests itself in the forms of atmospheric, water, electromagnetic, soil and noise contamination. Damages caused to industrial objects result in catastrophic ecological consequences such as ruination of stores that contain toxic and radiation matters; release into the atmosphere of nitrogen oxide, sulfur dioxide, carbon oxide, ammonia, etc. Release of non-treated industrial sewage may cause pollution of water arteries. Non-buried bodies of the dead are serious ecological problem, too. Biological remnants represent a source of dangerous bacteria that may appear in water or be transferred by animals. Biological material after body carrier’s death is filled with harmful bacteria and corpse stick, which, when not buried, many times sharpen sanitary-epidemiological situation. Unfortunately, there now exists no possibility of ecological control over considerable part of Ukrainian territory; the factual absence of controlling bodies on occupied territories and uninterrupted shelling allow for no objective assessment of harm caused to environment during the armed confrontation. At the same time, the regions and territories where there are no war operations become zones of ecological tension, too. The increase of internal migrants’ overloads water supply net, increases wastes and air pollution from moving sources thus disturbing the environment and ecosystems. So, direct war activities seriously impact the regions of war operations, and their consequences will be sensitive for many years. It will in the first place tell on the landscapes, lead to losses in biodiversity, fires within ecosystems and subsequent chemical pollution of the territories, active contamination of soils and water sources with oil products. Thorough attention in conditions of war should be paid to probable ecological consequences which should be studied in their whole complex since environmental problems may transform into threats of economic and social nature.