Five years ago, Ahmad Heryawan promised to clean up the Citarum River-said to be the world's most toxic river-and turn its water into drinkable water. The Justice and Prosperity Party (PKS) politician made the promise one day before the start of the West Java gubernatorial campaign period on February 7, 2013. At the time, Aher, the name the governor is known by, was running for a second term as governor.

Now Aher's tenure is nearly over and the Ci