Allahabad, India - Among believers, the river has many names: the Pure. Destroyer of Sin. Light Amid the Darkness of Ignorance. But mostly they call it Ganga Ma -- Mother Ganges.
They worship it despite the islands of garbage that float down its path and the tons of chemicals dumped into it.
They worship it despite the 250 million gallons of sewage poured into it every day, spreading illness among the 350 million people -- one-twentieth of the world's population -- who live in its watershed.
For Hindus, the Ganges is a living goddess, capable of washing away sin. But its troubles are as epic as the river itself. And as millions of people filled a vast tent city on the floodplains outside this north Indian city, gathering for a Hindu festival that pays homage to the river, it was the goddess' troubles that grabbed attention.
"She is my mother," said Chandra Madash, a holy man squatting by a fire on a cold night. His beard was long and dirty, his clothing frayed, his voice gravelly. He had spent nearly his entire life in a remote Hindu monastery. "Even if she is dirty, I love my mother."
Then he asked: "How can people do this to her?"
Cleanup pleas largely ignored
Predictably, perhaps, in a country that straddles the ancient and the modern, it was a group of Hindu holy men in the middle of the battle. They filed lawsuits, called news conferences and organized protests. A handful threatened suicide.
"The government has promised us they would stop dirty water from flowing into Mother Ganges, but it's still being done," Narendranand Saraswati, a monastery leader, told thousands of cheering followers who gathered by the Ganges. "We want the entire country to know we will not stop until the river is clean!"
These are not your typical environmental activists.
In India, they are known collectively as sadhus, a sweeping term that includes tens of thousands of Hindu holy men, from revered leaders to charlatans who prey on the lost and confused.
A handful are famous for their profligacy -- luxury cars, fur coats and rumors of mistresses -- but most live poor and celibate.
Many spend their days wandering India's streets, begging for food and owning little beyond their clothes. But among the loose coalition of sadhu leaders speaking out about the Ganges, some have potent political connections. In a country with 890 million Hindus, they are part of wide, informal power networks.
And while their protests often spark headlines and short-term responses -- this year, the government opened dams to increase the Ganges' flow during the festival, creating brief river surges -- a serious cleanup would have to confront decades of official failure.
"The government listens to us during the Kumbh Mela," said Binduji Maharaj, a sadhu leader. "But unfortunately, when it is over, they tend to forget us."
The river's role
Every six years, millions of people gather for the Ardh Kumbh Mela, or Half Grand Pitcher Festival, held where the Ganges and Yamuna rivers -- along with the mythical Saraswati River -- come together. This year's festival ended Friday.
Hindu mythology says gods and demons once fought a war over the nectar of immortality, spilling some at the rivers' confluence.
The people stand in the slow-moving gray-green water close to the shoreline, scooping water with cupped hands and pouring it over their heads.
As loudspeakers blare hymns, boys peddle religious knickknacks, from incense sticks to tiny clay lanterns to milk at 5 rupees (about 11 cents) a ladle.
"How can the Ganges be dirty?" asked Thiruven Shankar, the joy obvious in his voice as he joined the throngs. "We drink it in, we bathe in it, and we worship its waters."
Faith and reality
But it's more than just dirty. Scientists say sewage has devastated the 1,550-mile river, which spills from a Himalayan glacier and cuts through India's plains before flowing into the Bay of Bengal.
Scientists have found places with a fecal bacteria count nearly 4,000 times the World Health Organization standard for bathing.
"We all have faith in our rivers. We all worship them. But at the end of the day, there's a reality: India's cities are growing, its population is growing, and we don't have a proper sewage strategy," said Suresh Babu, a river specialist with the Center for Science and Environment, a prominent environmental group.
The medical effects are clear: millions of cases of disease, from amebic dysentery to hepatitis. By some estimates, one person dies every minute from waterborne disease in the Ganges river basin.
In the late 1980s, the Indian government vowed to clean it, launching its Ganges Action Plan and spending $300 million since then. Its failures are famous. The federal environment minister noted recently that the program had achieved very little -- but said $1.5 billion more was needed.
Repeatedly, the government has left promises unfilled, including those to a group of sadhus who launched an antipollution hunger strike.
"These officials have done nothing," said Veer Bhadra Mishra, sitting outside his home in the riverside city of Varanasi.
Mishra is the leader of an important Hindu temple, as well as a professor of engineering and a longtime environmental activist.
He said he doubts the recent attention will accomplish much. Too many holy men have ties to corrupt politicians, he said, and too few understand the science.
But giving up isn't an option.
"These officials must be humiliated!" the normally soft-spoken Mishra said, his voice rising sharply. "They must be embarrassed that they are allowing the Ganges to be dirtied!"