China's waterways face frequent pollution crises. Although they are often dealt with promptly, the solutions need to go beyond quick fixes, writes Ma Jun.

Since May there have been very frequent water pollution incidents in China’s rivers and lakes; and they have all been closely followed by good news about the release of clean water to improve the situation. First Taihu Lake started to stink and the nearby city of Wuxi had its water supply rudely interrupted. At that time, the Ministry of Water Resources promptly ordered hundreds of millions of tonnes of clean water from the Yangtze River to be diverted into the lake, resulting in a rapid improvement in water quality.

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