In 1995, research was carried out on the content of household waste in Riga in three different districts. Two districts with apartment houses and a district with private small-family houses were chosen. The research was carried out in spring and in autumn. The average percentage of waste content was the following (see Figure 51).

The figure show that glass, paper, cardboard and plastic are in sufficient amount, in order to perform waste sorting and processing. Over the last years the amount of waste has increased per capita, mainly because of imported goods' packing.