Australian Bureau of Statistics
4610.0 - Water Account, Australia, 2009-10 Quality Declaration
Previous ISSUE Released at 11:30 AM (CANBERRA TIME) 29/11/2011
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"Water losses" refer to water that enters the water distribution system of a water provider but does not reach the end users. Water losses can be attributed to seepage, leakage, evaporation (excluding evaporation from water storages), meter inaccuracies and theft. Note that this definition is similar to the definition for "unaccounted water" in the National Performance Report 2009–10: Rural Service Providers (National Water Commission, April 2011).
In the Water Account Australia, losses are assigned to the Water supply industry, following the framework outlined in the System of Environmental-Economic Accounts for Water (SEEA–Water). This enables a consistent treatment of losses and does not affect industry (e.g. Agriculture, Mining, Manufacturing) water consumption intensity measures.
Water losses are difficult to measure and consequently the estimation of losses by water suppliers is problematic. Industry guidelines have been established for estimating losses and it is hoped that over time estimation of losses will improve.
In 2009–10, the total volume of water losses (or unaccounted water) in Australia was 1,803 GL, which is about 20% of the gross water supplied (which includes bulk transfers to other water providers, see Glossary).
Of the States and Territories, New South Wales reported the highest percentage of losses as a proportion of gross water supplied (29%), followed by Victoria (20%) and Western Australia (14%).
DISTRIBUTION LOSSES(a)— 2009–10
This page last updated 24 September 2012
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