Advocates of recycled toilet paper point out that converting virgin pulp to toilet paper requires more water than recycled paper and makes use of the tons of already used paper that fills landfills.

再生厕纸的支持者指出用原生纸浆造纸的耗水量比用再生纸多，而且再生纸能利用垃圾场中填埋的成吨废纸。

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In the U. S., the pollution from older wastewater treatment plants and the efforts of environmental advocates spurred passage of the Clean water Act.

在美国，由于落后的污水处理厂排出的污染以及环保拥护者的努力，共同推动了“清洁水法”法案的通过。

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The nation's capital, Harare, has not imported adequate supplies of chemicals to treat water, resulting in citizens resorting to shallow wells and rivers for water, according to health advocates.

CNN: Cholera kills 300 in battered Zimbabwe

The damage to cars from floods can be extensive depending on the water level, length of time in the water and type of water including contaminants, consumer advocates say.

WSJ: What Happens to All Those Swamped Cars?

Chris Graff, of the Environmental Defence Fund in Oakland, notes that advocates of new water projects become much less enthusiastic if it is proposed that the users pay for it.

ECONOMIST: Water policy