"A report by Human Rights Watch says local authorities in heavily-polluted industrial areas have been sending sick children back to contaminated homes.
It says that in these areas - Henan, Yunnan, Shaanxi and Hunan provinces - anyone who complains is being harassed.
China has promised to clean up chronic pollution from heavy metals.
But reports of poisoning remain widespread - hundreds of thousands of children are suffering from lead poisoning, the HRW report says."
BBC News had the story June 15, 2011.