In one of the world’s hottest cities, fresh and filtered water can quench the searing onslaught of climate change — but US President Donald Trump’s foreign aid freeze threatens its vital supply, an NGO says.

The sun-parched city of Jacobabad sometimes surpasses 50 degrees Celsius in increasing heatwaves causing critical health problems like dehydration and heat-stroke.

In 2012, USAID committed a $66 million grant to uplift Sindh’s municipal services, including the flagship renovation of a plant pumping and purifying water from a canal 22 kilometres away.

But Pakistani non-profit HANDS says Trump’s aid embargo has blocked $1.5m earmarked to make the scheme viable in the long-term, putting the project at risk “within a few months”.