Archive:Water use in industry
Cooling for electricity production dominates water use in industry
Statistics in focus 14/2014; Author: Jürgen FÖRSTER
ISSN:2314-9647 Catalogue number:KS-SF-14-014-EN-N
Industry is one of the main water users in Europe, accounting for about 40 % of total water abstractions. Water is used in the production process (e.g. for cooling purposes, for cleaning/washing as well as for employees’ use) and is either provided by a public supplier or self-supplied. Furthermore the industrial sector is a major water polluter, as only up to 60 % (value based on data from eight countries) of industrial wastewater receives treatment before being disposed of into the environment.
This article provides information related to water abstraction (volumes of water withdrawn from the different sources), use (water that is actually used for industrial processing, excluding returned water) and wastewater generation by the industrial sector in European countries (EU Member States, candidate countries and EFTA countries).
- 1 Main statistical findings
- 2 Data sources and availability
- 3 Context
- 4 See also
- 5 Further Eurostat information
- 6 External links
Main statistical findings
Eurostat collects data on water abstractions for four main industrial sectors: (i) mining and quarrying, (ii) manufacturing, (iii) production of electricity, and (iv) construction and other industrial activities. Data cover the period 2000-11, but are not available for all countries and categories.
In 2010 fresh surface and groundwater abstraction for mining and quarrying ranged from 0.9 million m3 (the Netherlands) to 2 122.3 million m3 (Germany). Surface water is the main source of abstractions (long-term average abstractions over 50 % of total) in Bulgaria, the Czech Republic, Lithuania, the Netherlands, Romania, Sweden, the former Yugoslav Republic of Macedonia and Serbia. Abstractions of groundwater exceed 80 % of the total in Latvia (long-term average 94 %), Belgium (87 %), Hungary (87 %), and Poland (84 %).
Abstractions for the manufacturing industry (including for cooling purposes) and for production of electricity (primarily cooling water) account for more than 50 % of total gross abstractions in most countries (Figure 1). Fresh surface and groundwater abstractions for the manufacturing industry decreased in most countries in the 2000-11 period, with the exception of the former Yugoslav Republic of Macedonia (+269 %), Romania (+231 %), the Netherlands (+129 %), Austria (+32 %), and Sweden (+3 %). In the production of electricity (cooling) Belgium, Denmark, Germany, Estonia, Croatia, Latvia, Lithuania, the Netherlands, Austria, Romania, Finland and the UK (data for England and Wales only) reduced their abstractions.
The evolution of water abstraction for construction and other industrial activities varies between countries. For example, abstractions in Belgium decreased by 85 % in 2009 compared with 2000, while in Bulgaria abstractions increased in this period by 392 %. The Netherlands, Germany, Hungary and Bulgaria recorded the highest abstraction volumes (over 200 million m3). Table 1 shows the per capita total (surface and groundwater) abstraction for each main industrial sector and the share of surface water abstraction in total water abstraction. Estonia has very high abstraction rates per capita in two of these sectors: ‘mining and quarrying’, and ‘production of electricity’. In 15 out of 26 countries in Table 1 the highest values of per capita abstractions are observed for ‘production of electricity’, followed by ‘manufacturing’.
Non-fresh water resources are abstracted in some countries for the manufacturing and energy production industries. In 2010, non-fresh water sources abstracted for the manufacturing industry stood at 821 million m3 in Turkey, 507 million m3 in Sweden, 273 million m3 in the Netherlands and 229 million m3 in Spain. Non-fresh water abstracted for the production of electricity (cooling water) in 2010 reached 11 293 million m3 in Sweden, 4 125 million m3 in Turkey, 3 990 million m3 in the Netherlands and 1 163 million m3 in Cyprus.
Water use in industry
Water use (by the four main industrial sectors) from public water supply accounts for between 2 % (Poland) and 50 % (Latvia) of total use for the activities of all NACE classes. Self and other water supply for industrial use stands at over 60 % of this total use, reaching 90 % in some countries (e.g. 92 % in Bulgaria; 2011 data). Manufacturing and energy production together account for over 70 % of total water use (the majority of water is used for cooling purposes) in most countries, with the exception of Spain (25 % of total; 2010 data) and Turkey (13 %; 2010 data).
There are large differences among countries in the break-down of water use in industry, depending on the industry that prevails in each country, as illustrated in Table 2.
In 13 out of 17 countries in Table 2, production and distribution of electricity is the dominant industry in terms of water use. In Cyprus (2010 data), Serbia (2011 data), Bulgaria (2011 data) and Poland (2011 data) water use in the production and distribution of electricity is greater than 90 % of total water use in industry.
Both the production and distribution of electricity as well as manufacturing industry are significant water users in Latvia (2007 data, only public water supply), with proportions of water use of 52 % and 46 % respectively. In all countries the share of the mining and quarrying industry is below 4 %, while the construction industry uses less than 3.4 %.
Water use in mining and quarrying
Water use in manufacturing industry
Self and other supply is the main water source in manufacturing industry (Table 4). Total water use ranges from 0.7 m3 per inhabitant (Hungary, 2011 data, only public water supply) to almost 456.8 m3 per inhabitant (Finland, 2011 data). Finland together with Sweden, Norway, the Netherlands and Belgium recorded the highest water use per inhabitant. A decrease in water use can be seen after 2007, which may be due to both to the economic crisis (resulting in a reduction of production) and to the adoption of more water efficient technologies in industry.
In most countries, the main water-using industry is the ‘Manufacture of refined petroleum products, chemicals and chemical products’. However, the manufacture of basic metals is the main water-using industry in Latvia, Serbia and Turkey, water use for the manufacture of food products prevails in Malta and the former Yugoslav Republic of Macedonia, while the manufacture of paper and paper products is the main water-using industry in Slovenia and Sweden. The typical water use per inhabitant (median of country values), estimated from data available for 13 EU Member States, is (Figure 2, selected countries):
- Manufacture of food products: 4.9 m3/inhabitant (min. 1.7 m3/inhabitant in Malta, max. 15.8 m3/inhabitant in the Netherlands);
- Manufacture of textiles: 0.3 m3/inhabitant (min. 0.0 m3/inhabitant in Cyprus, max. 5.4 m3/inhabitant in Latvia);
- Manufacture of paper and paper products: 3.0 m3/inhabitant (min. 0.0 m3/inhabitant in Malta and Cyprus, max. 180.6 m3/inhabitant in Finland);
- Manufacture of refined petroleum products, chemicals and chemical products: 10.9 m3/inhabitant (min. 0.2 m3/inhabitant in Cyprus and Malta, max. 205.8 m3/inhabitant in Finland);
- Manufacture of basic metals: 8.1 m3/inhabitant (min. 0.0 m3/inhabitant in Malta and Lithuania, max. 40.7 m3/inhabitant in Sweden);
- Manufacture of motor vehicles, trailers, semi-trailers and of other transport equipment: 0.2 m3/ inhabitant (min. 0.0 m3/ inhabitant in Cyprus, max. 1.1 m3/ inhabitant in Sweden).
Water use in energy production
The share of energy production in total water use (for all NACE activities) ranges from 9 % (Turkey, 2010 data) to 95 % (Estonia, 2011 data). The energy sector is supplied with water from self-supply and other sources and the majority of water is used for cooling purposes (Table 5, Figure 3). Cyprus and Malta report the highest self-supply for energy production, all of which is used as cooling water (1 420 m3 per inhabitant and 1 198 m3 per inhabitant respectively; 2010 data).
Water use in the construction industry
Water use in the construction industry (Table 6) is rather low compared with the other three main industrial sectors. Spain, Turkey and Norway have the highest water use from public water supply, while Poland has the highest water use from self and other water supply sources. The high water use value for Poland in 2005 is attributed to a large construction site (artificial lake) that was operating at that time. Per inhabitant water use ranges from 0.01 m3 (Germany, 2010 data) to 1.66 m3 (Czech Republic, 2008).
Intensity of water use in main industrial sectors
The intensity of water use in a particular economic sector is defined as the volume of water used per unit of gross value added (GVA) and measures the pressure of the economy on water resources in relation to its economic impact, a relevant indicator for sustainable development and resource efficiency policies. It can be used primarily for policies of water allocation among different sectors of the economy since in water-scarce regions, where there is competition for water between various uses, water is likely to be allocated to the less intensive use. The inverse of water use intensity is ‘water use productivity’ which measures the value added generated by one unit of water used.
Figure 4 presents the intensity of water use in manufacturing, in mining and quarrying and in construction. Manufacturing and mining and quarrying are obviously much more water intensive industries in terms of water use per value added than the construction industry. In manufacturing industry, Germany (202.8 m3 per thousand EUR, 2010 data) and Finland (90.7 m3 per thousand EUR, only self and other water supply, 2011 data) reported the highest values, reflecting heavy water requirements. The same applies in mining and quarrying, where the highest values are observed in Germany (159.1 m3 per thousand EUR, 2010 data) and Belgium (139.6 m3 per thousand EUR, 2009 data).
Much less water is needed to create a particular economic value in construction than in other industries. The highest values for the construction industry were recorded in Norway (2.7 m3 per thousand EUR, only public water supply, 2009 data) and the Czech Republic (1.8 m3 per thousand EUR, 2008 data).
Wastewater generation and discharge
Table 7 presents the volumes of wastewater generated in European countries for the reference year 2011. Wastewater generation has decreased in most countries with the exception of Romania (+14 % in 2011 compared with 2002). Among the main industrial sectors, manufacturing industry has the highest wastewater production in most countries, while energy production had the highest wastewater generation in Finland.
Data on industrial discharges are not available for all countries. Compared with 2007 values, a decrease in industrial discharges was noted in some countries (e.g. Bulgaria, the Czech Republic and Serbia) and an increase in others (e.g. Germany, Spain). The percentage of discharges treated (2011) ranged from 8 % (Croatia) to 60 % (Czech Republic) (Table 8).
Data sources and availability
Data on water use by industry are collected by Eurostat, as part of water statistics, through a joint OECD/Eurostat Questionnaire on Inland Waters. Data collected include water abstraction (volumes of water withdrawn from fresh surface water, fresh groundwater and non- fresh water sources by industry), supply (public vs self-supply), use (water that is actually used for industrial processing, excluding returned water and water losses) and discharge of wastewater for the following industrial sectors:
- a. Food products
- b. Textiles
- c. Paper and paper products
- d. Refined petroleum products, chemicals and chemical products
- e. Basic metals
- f. Motor vehicles, trailers, semi-trailers and other transport equipment
- g. Other manufacturing
3. Production and distribution of electricity (including for cooling purposes);
Data are available at three spatial levels (national, NUTS2 regions, and River Basin Districts). However it is difficult to derive EU averages or total values, as data are not available for all countries and regions.
The European water policy, as manifested in the ‘Water Framework Directive’ (2000/60/EC), fosters the analysis of the pressures posed on water bodies by identifying and estimating: (i) water abstractions, and (ii) pollution from water use activities. Industry is one of the most intensive water users and therefore of particular interest.
Industrial water management is also one of the four areas for innovation specified in the European Innovation Partnership on water (EIP; COM(2012) 216 final), with the overall aims to: (i) increase water efficiency in production processes, and (ii) decrease pollution.
In 2010 the European Parliament and Council adopted the Directive 2010/75/EU on ‘Industrial emissions’ concerning integrated pollution prevention and control. Pollution control from the industry is also an objective of the ‘Blueprint to safeguard European water resources’ (COM(2012) 673 final) that sets a new strategy for water management in the European Union (EU).
- Water statistics
- Waste statistics
- Statistical classification of economic activities (NACE Rev. 2)
- Mining and quarrying statistics - NACE Rev. 2
- Manufacturing statistics - NACE Rev. 2
- Construction statistics - NACE Rev. 2
Further Eurostat information
- Energy, transport and environment indicators pocketbook, 2013 edition
- Euro-Mediterranean statistics pocketbook, Eurostat 2013 edition
- Environmental Statistics and Accounts in Europe, Eurostat 2010
- see Water
Methodology / Metadata
- Water statistics on national level (ESMS metadata file — env_nwat_esms)
Source data for tables, figures and maps (MS Excel)
- European Commission – Environment - A Water Blueprint ‘taking stock, moving forward’
- European Environment Agency - Water use by sectors
- European Environment Agency - Report No 1/2012 ‘Towards efficient use of water resources in Europe’
- WISE (Water Information System for Europe)
- Pacific Institute - The World’s Water data
- AQUASTAT - Database on water resources and uses