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A group of indigenous women from Bolivia and Peru supported by a NGO, carry out the cleaning of garbage washed along the coast of the Titicaca lake in an attempt to mitigate the harmful effects of pollution on native fauna and flora.

Aymara indigenous people fish on Lake Titicaca near Quehuaya in Bolivia, on June 2, 2018. (AFP)

Under a blazing sun on the arid banks of Lake Titicaca, high in the Andes Mountains, around a dozen indigenous women work tirelessly to collect cans, bottles and plastic bags.

The women with their long black braids, traditional red bell-shaped skirts, thick woollen jackets and felt bowler hats hope to set an example for other local residents and tourists who leave tons of garbage by the lake every year.

Aymara indigenous women, clean the shore of the Titicaca lake in Puerto Perez, La Paz department, Bolivia on April 18, 2018. (AFP)

But their efforts may amount to nothing more than window dressing; wastewater from the surrounding region is contaminating the lake, which many local people rely on for fishing to make a living.

At 8,500 sq km (about 3,300 square miles), Titicaca which straddles the border between Bolivia and Peru is as big as the French island of Corsica.

And at an altitude of more than 3,800 metres (12,500 feet), it is the world's highest body of fresh water that is navigable by large vessels.

The local Aymara people call it a "sacred lake," legend has it that from these waters emerged Manco Capac, son of the Sun God, and his wife Mama Ocllo, who then founded the ancient city of Cusco, the capital of the Inca empire.

On the beach of Santiago de Huata, a town on the Bolivian shore of the lake, the women use latex gloves to lift bits of rubbish one by one and put them in huge biodegradable bags.

Such clean-up days are organised once or twice a year to raise awareness about the devastating pollution.

A group of indigenous women from Bolivia and Peru suppported by a NGO carry out the cleaning of garbage washed along the coast of the Titicaca lake on April 18, 2018. (AFP)

Cows and sheep

In the dry season, when the water level is low, the scale of the disaster is all the more evident.

"We find plastic, paper, bottles and all types of rubbish," even "used diapers," says Helena Condori, a tradeswoman in the Peruvian village of Juliaca on the opposite shore of the lake.

"It hurts me that we are cleaning up what others throw away."

But she is full of enthusiasm despite the immense task at hand, because "it makes us feel that Peru and Bolivia are more united than ever."

The women have already cleaned the beach at Puerto Perez, also on the Bolivian side.

But environmentalists and local officials point to a bigger problem: the wastewater now flowing into the lake.

View of the polluted shore of the Titicaca lake in Puerto Perez, La Paz department, Bolivia on April 18, 2018. (AFP)

Less than 30 years ago, people could still drink the lake water, but no more.

It is "a problem that is causing serious pollution," says Fanny Zeballos, an environmental engineer for the non-governmental organisation Agua Sustentable (Sustainable Water).

The organisation supports the clean-up initiative, although Zeballos acknowledges it "will not be enough."

'I feel that I'm dying too'

Bolivian local councillor Reina Silva, who is also taking part in the clean-up day, says the effects of the pollution are all too plain to see.

"Our animals feed on totora [plants] and they die of diarrhoea. Our cows and sheep drink water and die. That's how we know that it's polluted," she said.

"I feel bad I feel that I'm dying too."

Agua Sustentable puts together the team of local women and provides the equipment to measure the level of pollution in the lake.

This time, they have collected about 100 kilos (220 pounds) of rubbish.

Juan Jose Ocola, head of the bilateral Lake Titicaca Authority operated by the two countries, says pollution is concentrated on some banks but does not affect the entire lake.

Picture taken on the shore of Lake Titicaca near Quehuaya in Bolivia, on June 2, 2018. (AFP)

"Lake Titicaca is exposed to a serious pollution problem, as it's the receptacle for all the pollutants that are produced" in the surrounding area, he says.

The contamination comes mainly from three urban centres, home to some 1.6 million people: Puno and Juliaca on the Peruvian side, and El Alto, next to the capital La Paz, in Bolivia.

Ocola said although the local women are making "major" efforts, two things are badly needed: the construction of water treatment plants and new garbage dumps.

Peru has already announced the construction of 10 water treatment plants, at the cost of $400 million, while Bolivia has earmarked $80 million for a similar project in El Alto.

Source: AFP