The river water results in the NVZs over the past five years, shown as the number of surface monitoring sites within set ranges of average concentrations, are as follows: NVZ Area * mg/l nitrate 1999 2000 2001 2002 2003 Moray, Aberdeenshire, Banff, Buchan 0-25 13 13 13 13 12 Moray, Aberdeenshire, Banff, Buchan 25-40 4 4 4 4 5 Moray, Aberdeenshire, Banff, Buchan ¡Ý 40 0 0 0 0 0 Strathmore, Fife 0-25 16 15 18 18 18 Strathmore, Fife 25-40 6 6 7 7 9 Strathmore, Fife 40-50 5 5 3 3 1 Strathmore, Fife ¡Ý 50 1 2 0 0 0 Lothian, Borders 0-25 15 15 16 15 16 Lothian, Borders 25-40 4 4 3 4 3 Lothian, Borders ¡Ý 40 0 0 0 0 0 Lower Nithsdale 0-25 1 1 1 1 1 Note: *In some NVZs the data represents more than one site on a single river.