Tangerang – The Tangerang municipal administration warned all industrial firms not to directly dispose untreated waste into rivers.

Head of the municipal environmental management control body (BPLH) Roestiwie said that almost 60 percent of the 2,000 industrial firms in the municipality directly funneled untreated liquid waste into rivers.

"We can shut down the firms because polluting the environment violates the 2009 Law on Environmental Management," she said on Tuesday, adding that the administration would require the firms to build proper waste treatment facilities.