Water companies base their forecasts of water supply and demand on water resource zones. To account for future uncertainties, an additional amount of water is included in the assessment of the supply demand balance. This 'additional' amount of water is called 'Target Headroom'. To meet target headroom the actual amount of available water supply has to be equal to or more than the sum of the forecast demand and target headroom. Where this is not the case, water companies will develop and plan options to increase water supply and/or reduce demand for water.
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Metadata
Was added to StatsWales: 24 Jul 2008
Next update: Jul 2013
Source: See notes against each indicator for source details
Contact: stats.environment@wales.gsi.gov.uk
The State of the Environment report presents data on the indicators that monitor progress against the Welsh Government's Environment Strategy. The full set of data, analysis, and notes on all of the indicators are available here through our StatsWales website. On StatsWales, the indicators are presented in a series of online reports which are also linked to data tables which users can then manipulate and/or download.
The statistics come from a range of sources in Wales and across the UK, which are updated at different times and intervals. The StatsWales reports will be updated twice a year in July and December and these updates will be highlighted through a pre-announced headline statistics published on our website. A statistical bulletin showing the status of each indicator will be produced annually in July to provide a snapshot of progess across all the indicators.
The contribution of data and information by organisations which monitor the environment is gratefully acknowledged. Although most indicators are currently measured, some further work is planned to develop the other indicators and in some cases to identify more appropriate indicators, as indicated in the StatsWales reports.
The symbol '-' is used where the data is less than half the final digit shown. This may or may not be a real zero.
Unless otherwise stated, the data in these tables and indicator reports are classed as National Statistics.