54753_not-searchable
/en/natur-og-miljo/statistikker/vann_kostra/aar
54753
212 litres a day per person
statistikk
2011-06-21T10:00:00.000Z
Nature and the environment;Public sector
en
vann_kostra, Municipal water supply, water distribution system, waterworks, water consumption, water quality, drinking water, water leakages, water feesWater and waste water , KOSTRA , Nature and the environment, Public sector
false

Municipal water supply2010

Content

Published:

This is an archived release.

Go to latest release

212 litres a day per person

KOSTRA statistics on water supply show that more than 42 per cent of water to the municipal water pipeline system is consumed by households. An additional 2 per cent is consumed in holiday cottages or holiday homes. In one year, this means 212 litres a day per person.

Water supply by sector and household consumption per person. County. 2010. Per cent and litres per person and year.

Altogether, the municipal waterworks produced 722 million m3 of water, which is up 2 per cent compared to 2009. Around 31 per cent of the water supplied is “lost” through leakage.

Half the pipeline system from 1971-2000

The estimated length of the municipal water pipelines is nearly 42 700 kilometres; the same as the earth’s circumference at the equator.

Old pipeline systems with potential for leakage may increase the likelihood of polluting the drinking water being transported. Thus, renewal of pipelines is important. Around 50 per cent (20 900 kilometres) of the municipal pipeline system was laid between 1971 and 2000.

Booster pumps need to be used in many areas of Norway in order to transport the water to the consumers. There are a total of 2 155 such pumps in the country, which corresponds to an average of 1 booster pump every 20 kilometres of water pipelines. If the pressure should drop, there is a risk that polluted water from the outside may come into contact with the drinking water inside the pipelines. Thus, it is important to reduce pressure drops to a minimum by renewing old pipelines and having good routines for planned stops in the water supply.

Renewal of municipal water pipelines - 3 year moving average. 2002-2010. Country. Per cent.

Length of municipal water pipelines by time being laid. County. 2010. Kilometres.

Pipeline renewal stabilised

The renewal activity varies. Calculated as a 3-year moving average for the period 2008-2010, the rate of renewal is 0.71 per cent of the total length of water pipelines. Although this is an increase compared to 0.48 per cent for the period 2002-2004, the renewal rate of the last 4-5 years has now apparently stabilised around the 0.7 per cent level.

Satisfactory water quality

Around 4.1 million inhabitants in Norway were connected to the 1 058 municipal water works located in the country. This corresponds to 83.5 per cent of the population.

In 2010, a total of 96, 79 and 93 per cent respectively were connected to municipal waterworks that provided water with satisfactory content of thermo-tolerant intestinal bacteria ( E . coli ), colour and levels of acidity (pH).