Rainfall is a renewable resource, but not inexhaustable. There’s only a certain amount of water falls from the sky every year (varying from year to year, just to add excitement). In some places (e.g. Cambridge) the water available is easily more than enough. In others (e.g. London) there isn’t enough water to satisfy everyone’s wants, thus hosepipe bans.
Some places mine their water (aquifers) — this source of water is *not* renewable.
Even if you have enough water, it takes energy to purify it for human consumption. Use less water → use less energy → cause less pollution.
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timeasmymeasure
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Date: 2007-05-09 08:46 pm (UTC)Some places mine their water (aquifers) — this source of water is *not* renewable.
Even if you have enough water, it takes energy to purify it for human consumption. Use less water → use less energy → cause less pollution.