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In 1994, total water withdrawal was approximately 92 million m3 (Table 3). Urban water is supplied entirely from surface water. The major use of water in industrial processes is for the liquefied natural gas industry, which abstracts and treats its own water from the Belait river. Other industrial uses are on a smaller scale for timber and sawmills, dairy farms, soft-drink manufacture and workshops, which account for about 25 percent of overall water demand.
Initially, groundwater abstraction was undertaken in the 1950s for use by the oil and gas industries. This has been replaced by surface water resources. Groundwater abstraction, which accounts for 0.5 percent of total water supply, is currently limited to the local bottled water industry (Figure 1).
Drinking water is treated at six government treatment plants, which are located in different parts of the country (WHO, 2004).