要想知道有没有漏水，加一点食用染色剂(或冷咖啡)在水箱，等几分钟。

Look for leaks by adding some food coloring (or even cold coffee) to the tank and wait a few minutes.

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检查厕所是否有无声漏水，在水箱中滴几滴食品色素，如果马桶中的水有颜色表明水箱漏水，可能只需简单地更换阻水阀就能修好。

Check toilets for silent leaks by putting a few drops of food coloring in the tank; if the color shows up in the bowl indicating a leak, fixing it may be as simple as replacing the toilet's flapper.

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在我们的日常生活用水中，家用冲水马桶的消耗水量非常大，目前家用冲水马桶的水箱水位控制采用机械浮球式或浮筒式控制，马桶的漏水问题没有解决。

Now, control methods that detect tank water level of household water flushing closestool usually include mechanical float or pontoon, but the problem of closestool leaking was not solved.

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