River Pollution in Mandailing Natal 

I TOOK the photo of the juncture of two rive streams with a mobile phone on Tuesday, January 25, at 2:02pm in Aek Nangali village, Mandailing Natal Regency, North Sumatra. The photo distinctly shows that the river stream on the left is so clear and that on the right is very turbid. 

I delivered the picture depicting the river contamination to a media in Mandailing Natal and it published the ne