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The image contrasts two water supply systems: the left diagram showcases the present system where water flows from dam/storage to a water treatment plant, then to households, shops, factories, and the city, before waste water returns to the river; pure water flows uninterruptedly to these points, storm water from the city only flows to the river, and waste water from all points goes to the river. The right diagram depicts the future system where water flows similarly from dam/storage to the treatment plant, then to households, shops, factories, and the city; however, waste water now gets filtered back to the water treatment plant before proceeding to the river, and storm water flows directly to the river.
Given the complexity of the image, the above description may not be entirely accurate.
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The provided diagrams illustrate the water supply system in the country of Australia in its current form and future plans.
Overall, there will be more pure water and less wastewater in the future water supply system than recent water supply system.
In the present, the dam and storage provide pure water to various places, such as households, factories, shops, and cities, which throw wastewater to the water treatment plant as the dam and storage do. Moreover, such places provide stormwater to rivers.
In the future, the dam and storage will still give pure water to human-living places and not provide any kind of water to water treatment plants. It is expected that the water treatment plants will also give pure water to places where people reside, as the dam and storage do now. It is also planned that human-living places will provide stormwater to the water treatment plant, besides giving wastewater to them. In addition, the river will not get any kind of water from other places.
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