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In November 2015, disaster struck near the town of Mariana in Brazil.Ìý The Fundão tailings dam at the Samarco mine failed, spilling water, mud and debris 650km down the Rio Doce, eventually reaching the Atlantic Ocean. The collapse and mudslide killed 19 people, caused severe economic and social damage for communities living along the Rio Doce, andÌýaffected fish and other aquatic life. We don’t yet know the full extent of the damage it caused to critical ecosystems and water resources. However, we do know it was one of the country’s worst environmental disasters.

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Today, the Rio Doce still carries high levels of sediment from the spill, despite ongoing efforts to revegetate and restore river banks in the upper reaches of the watershed.Ìý These sediments can be detrimental to local livelihoods, human health, infrastructure such as hydropower and water treatment facilities, as well as ecosystems.Ìý

Water availability is about quantity and quality, and the Rio Doce basin has lost both. ÌýDuring the same period the dam collapsed, Brazil was facing one of its worst droughts in more than 80 years and this was already causing stress on the people and the environment, especially in the south-eastern part of the country, where the Rio Doce runs. Ìý

Communities were living with a polluted river long before the dam broke.Ìý

But communities in the Rio Doce watershed were living with a polluted river long before the dam broke.ÌýOver the years, the river has suffered from an accumulation of impacts from unsustainable mining, deforestation, poorly managed agriculture, insufficient sewage treatment in most communities along the river, amongÌýother causes.Ìý Strong laws to ensure the river’s protection were in place, but often lacked adequate enforcement.ÌýEven now, over two years after the collapse of the tailings dam, the government and local communities still find it difficult to address these challenges in this river basin.Ìý

One of my tasks as Chair of the Ïã¸ÛÁùºÏ²Ê¿ª½±½á¹ûÏÖ³¡Ö±²¥-led is to contribute guidance to the efforts to rehabilitate the watershed, and ensure a good quality of life for the affected communities, over the next five years.Ìý The Panel is tasked with keeping an independent eye on restoration with a landscape perspective, as a step towards long-term sustainability. ÌýDrawing on the latest scientific findings and using an inter-disciplinary approach, the Panel is working to identify practices and policies that will help local people rebuild their environment and livelihoods.Ìý The Panel’s findings will inform the – legally mandated by the Brazilian government to drive the restoration of the basin after the dam collapsed – as well as mining companies BHP and Vale, which jointly own the Samarco mine.Ìý

Over the years following the disaster, the situation in the Rio Doce basin has, understandably, become an extremely controversial and emotionally charged topic in Brazil and beyond. This is why objective, scientific advice and an approach that can help bring together communities, business and government are all the more crucial. For restoration efforts to succeed, we need partners who work together and are convinced about the importance of restoring the river’s health for everyone’s benefit, and who will help ensure that laws are adequately implemented and existing national programmes are executed when applicable.Ìý

More companiesÌýmust recognise that it is better to prevent a disaster than to react to one.

Without water, there is no life and no economic activity. Let us remember that the Rio Doce is not just a river or a watershed. The area is home to over 3 million people, who depend on the river for water, food, livelihoods, leisure and more. The river basin is also of great importance to the region as it supports a wide range of economic activities, from livestock, coffee and cocoa farming to steel-making and mining.

More companies around the world must recognise that it is better to prevent a disaster than to react to one. Samarco, for example, has already committed to spend at least US$5 billion to cover the costs of repairing damages caused by the dam collapse. ÌýOther costs related to loss of jobs, income, operation of the hydroelectric plant, and more, when added, will confirm: prevention is much cheaper than restoration.

Mining companies, in particular, know that their actions must extend beyond corporate social responsibility if they want to maintain their ‘social license’ to operate. In the Rio Doce watershed as elsewhere, it is in the long-term interest of the private sector to ensure that all sectors of society – especially local communities – benefit from business activity that is based on natural resource use.Ìý Today, companies need to manage their resources and minimise their impacts on the environment for the greater good of society.Ìý In other words, they must not only strive to be the best on the planet, but also the best for the planet.

Ïã¸ÛÁùºÏ²Ê¿ª½±½á¹ûÏÖ³¡Ö±²¥ and its Members must ensure that laws are effectively implemented to protect rivers like the Rio Doce and the people who depend on them.

As delegates gather for the with the common aim of protecting this precious global resource, let us hope that the joint efforts to restore clean, safe water to the Rio Doce basin will inspire action well beyond Brazil. All those involved in rebuilding the Rio Doce watershed agree that they would like it to become a model for Brazil, one that protects the quality of the river and surrounding environment and therefore the health of the people, and that recognises law and order. Ïã¸ÛÁùºÏ²Ê¿ª½±½á¹ûÏÖ³¡Ö±²¥ and its Members worldwide have a responsibility to ensure that laws are effectively implemented to protect rivers like the Rio Doce and the people who depend on them.