Expert: Tackle pollution in drainage system first

Disgusting sight: A large amount of rubbish trapped by the log boom in Sungai Pinang in Jalan Sungai, Penang. — CHIN CHENG YEANG/The Star

PETALING JAYA: River pollution should be tackled upstream where the drains are, said Universiti Sains Malaysia (USM) River Engineering and Urban Drainage Research Centre director Prof Dr Nor Azazi Zakaria.

Dr Nor Azazi said it would be pointless cleaning rivers if drains flowing into them continued to be dirty.