From thick smog blanketing the cities, to acid rain corroding soils and ruining crops, air pollution from China’s coal industry is inflicting heavy damage on the country’s environment, its economy, and its citizens’ health. But these clouds of smoke have obscured the less visible (but no less severe) water challenges facing the coal sector and the region it operates in. 

As the Senate returns from recess, passing the annual National Defense Authorization Act will be one of its top priorities—and this year it could include a potentially controversial amendment directing the Pentagon to assess the impact of climate change on national security. In the House, the Langevin amendment surprisingly garnered enough Republican support to withstand a challenge in July. Since then, two more senior military appointees have testified to the importance of understanding the challenges climate change poses to national security. 

Chinese cities are being encircled by untreated sludge—a pungent, viscous mixture of human excreta and stormwater runoff. Four years ago in Beijing, trucks loaded with untreated sludge from the city’s largest wastewater treatment plant were illegally dumping mountains of sludge in the outskirts of the capital as “free fertilizer” for peri-urban farms. Similarly, in the southern China city of Guangzhou, disposing toxic sludge into the nearby river required nothing more than a hired boat. From the far western desert city of Urumqi to the eastern metropolis of Shanghai, more and more of China’s cities are struggling to manage mountains of sludge and municipal waste, as well as floods of wastewater and stormwater runoff. 

Water-related challenges in El Salvador have acquired far greater significance over the past decade as they have intersected with other social problems including migration, criminal violence, and drug trafficking. When combined, these factors pose threats to domestic and regional stability. Damaging heavy rains, droughts, and rising temperatures are exacerbated by steadily intensifying El Niño oscillations and threaten the production of staple and export crops.  The declining viability of rural livelihoods is driving many farming families to migrate to urban centers or across borders. Food security is a constant concern across the region, and millions already rely on humanitarian assistance. Infrastructure has been damaged repeatedly by floods and raging rivers. El Salvador can mitigate many of these risks by employing ecological landscape restoration.  Improving the soil’s capacity to retain and regulate water will help maintain both agricultural and ecological viability.

Floods have taken the lives of more than 100 people in northern Bangladesh over the last two weeks. Fully one third of the country has been flooded and some 600,000 people have been displaced in the riverine nation as a result of monsoons in India and Nepal. At international climate forums, Bangladeshi diplomats consistently decry such disasters as part of their urgent calls for action to mitigate changing weather patterns worldwide. But here in the country’s Rangpur-Kurigam region, both authorities and citizens have been reluctant to attribute these deadly disasters to the effects of climate change.

Despite sharing a common element—water—the freshwater community and the Water, Sanitation and Hygiene (WASH) community have traditionally worked independently of each other, said Jimmiel Mandima, director of U.S. government relations at the African Wildlife Foundation during a recent webinar organized by USAID-supported Africa Biodiversity Collaborative Group (ABCG). However, that is starting to change: “Integration will bring value addition and synergy,” he said.

Nigeria is ranked among the most fragile states in the world. The country faces significant water challenges, which vary greatly from one region to another. Weak governance exacerbates these water challenges, while conflicts over water resources make governance more difficult. There are three main geographical flashpoints where conflict over water is likely to break out. In the north and northeast, Boko Haram has waged a violent insurgent campaign since 2010; among their demands is government provision of clean water. In Nigeria’s Middle Belt, changing rainfall patterns are limiting the grazing area of Muslim Fulani herders, who then encroach on the land of predominantly Christian farmers. Conflict over these lands killed more Nigerians than Boko Haram in 2016. Finally, in the Niger Delta, militant groups are attacking oil infrastructure, partially motivated by conflict over rights to land and waterways. Oil spills also contribute to food insecurity and malnutrition in this region.

Pakistan is South Asia’s fifth most vulnerable country in terms of water availability, and Karachi is the sixth most water-stressed city in the world. Predictions indicate that the country will face absolute water scarcity (insufficient water supply to meet demand) as soon as 2025. While population and demand for water steadily increase, freshwater quantity and quality are decreasing.