Beijing's tap water will not lead to the formation of stones in an organ or duct of the human body, known as lithiasis, an official said, in the latest effort to ease public doubts about water quality.

At the annual session of the city's political advisers on Monday, authorities denied rumors that the city's water might lead to lithiasis.

Beijing's water quality meets national standards and is safe to drink, Cheng Jing, director of the Beijing Water Authority, said on the sidelines of the ongoing annual meeting of the Beijing committee of the Chinese People's Political Consultative Conference.