The largest of these drains, the Najafgarh drain (aka the Sahibi river) meets Yamuna near Signature bridge turning the brownish water into black dludge. | India News

The largest of these drains, the Najafgarh drain (aka the Sahibi river) meets Yamuna near Signature bridge turning the brownish water into black dludge. | India News

While the city’s sewerage infrastructure needs rapid upgrades, protecting the Yamuna requires more than engineering solutions