The chart displays changes in phosphorus emission intensity of domestic sector in 1990, 2000 and 2009. Phosphorus emission intensity is expressed as kilogram of phosphorus discharged in water per inhabitant and year.
Two sets of values are displayed for emission intensity for 2009. (1) Values calculated on the basis of default population equivalents and treatment efficiencies and (2) values calculated as sum of emission load reported voluntarily under the UWWTD and calculated load generated by population not connected to waste water treatment.
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