Ball, D.F.. 2002 Additional measurement of nitrate concentrations in groundwater in the Nith catchment. Nottingham, UK, British Geological Survey, 17pp. (CR/02/262N) (Unpublished)
Abstract
Twenty nine private boreholes and springs identified in earlier survey work as yielding groundwater with high nitrate concentrations have been analysed and classified according to the proximity of nitrogen sources and the degree of protection from surface run-off. Of the full data set 59% have water with a nitrate concentration greater than 25 mg/l, and by excluding those sources least protected from potential nitrogen sources, 44% exceed 25 mg/l.
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