Total fresh water resources of the country including waters of the Danube River are estimated at 107,226.10 cubic kilometres (long-term annual average), which constitutes 14.1 thousand m3 per capita.
In 2009, the total abstracted fresh water for economy is estimated at 6,121.10 cubic kilometres, which represents around 5.7% of fresh water resources of the country. About 43% of fresh waters in 2009 are from the Danube River and used mainly for cooling in the energy industry.
Total water entered water supply system by public water supply systems operators in 2009 is estimated at 987 million m3, and by the irrigation systems in the amount of 962 million m3. Water supply losses during transport are 59.2%.
Relatively constant is consumption of drinking water by the households - on average 99 l/day/per capita. Nearly 65% of wastewater is discharged after treatment in urban and industrial treatment plants with a predominantly secondary treatment.
According to the requirements of the Water Act (State Gazette 67/27 July 1999), the territory (and the aquatic areas) of Bulgaria are divided into 4 river basins as a basic unit for integrated water management. Each of the river basins has their own management structure and management plan.