According to Water Services Association of Australia, water demand in Australia could increase by 1.5 trillion litres over the next 50 years if the population grows to 45 million. However, if the population only reach 31 million, it will only need an extra of one trillion litres of water. The Water Services Association is trying to diversify the sources of water in Australia such as desalination, recycled water, groundwater, water trading with rural sector, storm water and rainwater tanks. Development of new technologies like waterless washing machines also helps to cope with the rise of demand of water. Environmentalists are concern that there are possibilities the new technologies will harm the environment. No matter what approach is taken, the cost of water will increase soon in Australia.
I think it is the same for other countries too. Thus, we need to start appreciate water more. We must care for our river and stop the water pollution as it will only harm us back in the future.
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