Second Environmental Performance Review of Albania

84 Part III: Integration of environmental concerns into economic sectors and promotion of sustainable developmentFigure 6.1: Development of the parameter NBO 5 , 2001-201025.0020.00NBO 5 (mg/l O 2 )15.0010.005.000.002001 2002 2003 2004 2005 2006 2007 2008 2009 2010Drini River Mati River Ishmi River Erzeni RiverShkumbini River Semani River Vjosa RiverSource: Environment and Forests Agency (EFA), 2011.Figure 6.2: Development of the parameter NH 4 , 2001-20106.005.00NH 4 (mg/l NH 4 )4.003.002.001.000.002001 2002 2003 2004 2005 2006 2007 2008 2009 2010Drini River Mati River Ishmi River Erzeni RiverShkumbini River Semani River Vjosa RiverSource: Environment and Forests Agency (EFA), 2011.The bad quality of both surface water andgroundwater may put constraints on the use of water,especially:• From rivers such as Kiri River (industrialwastes), Mati River (copper mining), GjanicaRiver (oil extraction), and Ishmi, Erzeni, Driniand Semani rivers (industrial and domesticwastes). The generally high values of NBO5,NH4 and P-total in Ishmi River and to someextent in Erzeni River document especially thehigh organic pollution load resulting mainlyfrom domestic sewage (Figures 6.1, 6.2 and6.3);