Q. Why is this in news?
A. For the second time in a week, the Delhi Jal Board (DJB) had to reduce water production capacity by 25 per cent after high levels of ammonia were detected in the Yamuna river.
Q. What is Ammonia and what are its effects?
Q. Why is it a cause of concern?
Q. Where does Ammonia come from?
Q. How is it treated?
Q. What is the long-term solution to the problem?