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Southwest China's Tibet Autonomous Region received 141 million yuan (about 20 million U.S. dollars) earmarked by the central government for projects of water pollution control in 2019.

The funds were poured in to treat pollution of Jinsha, Lancang, Nianchu and other rivers of the region, according to Norgyel, head of the regional department of ecology of environment.

All water sources for centralized urban drinking water supplies have met the quality standard in the region, he said.

For rural residents, the regional government spent 42 million yuan on 27 pilot programs of rural sewage disposal, according to Norgyel.