Lead in tealeaves come from roadside air pollution because there is lead in the gasoline and many bad cars on the road. That is why you should not buy tea produced next to the road, or in the city. Longjing is an example. The tourist tea gardens in the city are too close to air pollution for good quality. Although I love Longjing very much and used to buy from small shops in Hangzhou city, I don’t anymore after reading one report in Chinese. I now rely on professional tea people who really love tea and know non-polluted sources for good Longjing, like Tea Hong.
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