Acidic water from the copper mine (at Bolnisi) is the main source of pollution. Considering the seasonality of Georgian rivers, these resources can be distributed only by building hydropower plants (HPPs) with regulating water reservoirs (table 4.1). The non-consumptive use of water for this sector has been increasing, from 20.6 billion m3 in 2011 to 26.5 billion m3 in 2013.