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State of the Environment Oslo

The statistics for different environmental topics are published under the headings below. You can follow trends in the environmental indicators and our assessments of the current status in each field.

By clicking on the headings below you will be able to see the statistics together with our assessment.

Environmental statistics

Waste and litter

Goal area ES.1 In recent years, the amount of waste per capita has declined and levelled out – in spite of economic growth. In addition, the City of Oslo has implemented a comprehensive system for waste separation at source, and an increasing amount of waste is now being recycled.

Climate and energy

Goal area ES.4 Transport, especially road transport, and fossil energy use such as oil-fired heating are the largest sources of emissions in Oslo. While total emissions have risen since 1991, emissions per person have declined.

Air quality

Goal area ES.6 Air quality in Oslo is generally good, although the levels of nitrogen dioxide and particulate matter (PM10) emissions present challenges. The main sources of pollution are road traffic and the burning of fuel wood.


Goal area ES.7 Oslo has a particularly rich and varied flora and fauna, with a high diversity of species and habitats. The main challenges in this area are development, overgrowing of extensively managed agricultural landscape and the spread of non-native (alien) species.


Goal area ES.8 Traffic is the main source of noise in Oslo, and about one-fifth of the population are exposed to high levels of noise from road and rail traffic.

Transport and mobility

Goal area ES.9 Almost two in three travel sustainably in Oslo. Most primary school children walk to school.

Water and rivers

Goal area ES.10 The quality of Oslo’s drinking water is high. Problems with the sewerage system and management of storm water runoff are polluting the rivers and the fjord.