Water safety remains a problem in the earthquake-hit areas of Sichuan province, rescuers said on Wednesday.

Zhou Yun, with Mianyang city's disease control and prevention center, sampled 15 sites from mountain springs, rivers, wells and water treatment plants in six villages in Longmen township, Lushan county.

Analyzed in a laboratory set up in a tent, the water was found to be slightly turbid, organically contaminated and unsuitable for drinking.