It was way back in 1986 that Rajiv Gandhi had launched the Ganga Action Plan. But years later, after much water (sewage) and money has flowed down the river, it is as bad as it could get. Why are we failing and what needs to be done differently to clean this and many other rivers?
Pollution in the Ganga remains a tough challenge. According to recent estimates of the Central Pollution Control Board (CPCB), faecal coliform levels in the mainstream of the river—some 2,500 km from Gangotri to Diamond Harbour—remain above the acceptable level in all stretches, other than its upper reaches. Even in the highly oxygenated upper stretches, faecal coliform levels, though within acceptable levels, are increasing in places like Rudraprayag and Devprayag, suggesting inadequate flow for dilution.
Pollution hot spots, the mega and fast-growing cities along the river, present a grimmer picture. According to CPCB monitoring data, BOD levels are high downstream of Haridwar, Kannauj and Kanpur, and peak at Varanasi. But what is worrying is that in all the stretches pollution is getting worse. This is not surprising given that all along this heavily populated stretch fresh water intake from the river is increasing. Water is drawn for agriculture, industry and cities but only waste is returned to the river.