Keywords
wfd, nutrient, environment, environmental pressures, pathway, catchment, source, phosphate, surface water, critical load, point source, pressure, characterisation, run-off, water framework directive, environmental risk, paved areas, subcatchment, river, nitrate, unpaved areas, leaking sewers, pollution, risk, sediment, environmental impact, diffuse, hydrography, point, environmental policy, misconnections, receptor, impact, ie, pollutant pathway, urban, critical source area, pollution impact potential (pip)