Talking to the reporters on Friday, the chief minister said Arunachal Pradesh and Assam governments have approached the Centre in this regard following which it has assured them of raising the issue with the Chinese government.
"Government of Arunachal Pradesh and Assam had approached the Centre in this regard. It will take it up with government of China. From our side, we have already tested water in laboratory. Experts say it is contaminated with bacteria and iron and is unfit for human consumption," Sonowal said.
The contaminated water has caused concern among people and authorities of the states.
The governments of both the states are suspecting that dam building activities in China could be a reason of the pollution.