The chart displays changes in nitrogen emission intensity of domestic sector in 1990, 2000 and 2009. Nitrogen emission intensity is expressed as kilogram of nitrogen 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 loads reported voluntarily under the UWWTD and calculated load generated by population not connected to waste water treatment.
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Avoid disposing any waste on the streets, in nature, and especially not in the gutter. This rubbish can end up in the water treatment system and overcharge the decontamination process. Take advantage of city waste baskets. They are everywhere and that's what they are for.
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