In California, Some Buy Machines That Make Water Out of Air

The machine Ted Bowman helped design can make water out of the air, and in parched California, some homeowners are already buying the pricey devices.

The air-to-water systems work like air conditioners by using coils to chill air, then collect water drops in a basin.

“Our motto is, water from air isn’t magic, it’s science, and that’s really what we’re doing with these machines,” said Ted Bowman, design engineer at Washington state-based Tsunami Products.

The system is one of several that have been developed in recent years to extract water from humidity in the air. Other inventions include mesh nets, solar panels and shipping containers that harvest moisture from the air.

Bowman said his company’s machines — made for use at homes, offices, ranches and elsewhere — dehumidify the air and in doing so create water that’s filtered to make it drinkable.

The technology works especially well in foggy areas and depending on the size can produce between 200 gallons (900 litres) and 1,900 gallons (8,600 litres) of water a day. The machines also operate efficiently in any area with high humidity, including California’s coastline, he said.

The machines are not cheap, with prices ranging from $30,000 (roughly Rs. 22.43 lakhs) to $200,000 (roughly Rs. 1.50 crores). Still, in California, where residents have been asked to conserve water because one of the worst droughts in recent history has depleted reservoirs, some homeowners are buying them to meet their water needs.

Don Johnson, of Benicia, California, said he bought the smallest machine, which looks like a towering AC unit, hoping it would generate sufficient water to sustain his garden. But he found it puts out more than enough for his garden and his household.

“This machine will produce water for a lot less than you can buy bottled water at Costco for, and I believe, as time goes on and the price of freshwater through our utilities goes up, I think it’s going to more than pay for itself,” he said.

Besides the high price tag, the unit also requires a significant amount of energy to run. But Johnson said the solar panels on his roof produce enough power to operate the machine without additional energy costs.

Experts like University of California, Davis hydrology researcher Helen Dahlke said the technology makes sense for individual homeowners, especially in rural areas. But she said it is not a practical solution for California’s broader water woes.

Dahlke said the focus should be on fighting global warming to prevent future droughts.

“We really actually need to curb climate warming to really make a difference again,” she said.


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