Major contributions are the metallurgy, oil refining, coal mining, chemical industry and energy sector. In addition, Georgia's rivers are heavily polluted as a result of diffuse agricultural sources of pollution. This is the reason that the pollution by pesticides and nitrogen compounds exceed permissible levels in almost every water body. Major artery is Rioni river. Hydrochemical observations are performed at 10 sections.
Major pollutants are phenols.
Major artery is Mtkvari river, which polluted with ammonia.