As droughts intensify in the US, residents are embracing wastewater recycling, with many ready to fund the necessary infrastructure.
The United States is grappling with severe drought conditions affecting about half the country, exacerbated by climate change and irregular rainfall patterns. Scientists from NASA warn that regions like the American Southwest and Central Plains could face megadroughts after 2050, potentially more severe than any in the last 1,000 years.
How Wastewater Recycling Works
Wastewater recycling involves treating sewage through primary, secondary, and tertiary processes. Primary treatment removes solids, secondary uses microorganisms to break down pollutants, and tertiary adds ultrafiltration and disinfection to make water safe for drinking or irrigation.
A recent survey by Todd Guilfoos, a water economist at the University of Rhode Island, found that residents in small communities would pay an average of $49 per month extra to avoid water restrictions through recycling programs. This reflects growing acceptance as water scarcity becomes acute in states like California, Arizona, and Texas.
Currently, US wastewater plants treat 33 billion gallons daily but only reuse about 7%, according to the Environmental Protection Agency. Experts like Samuel Sandoval Solis from the University of California, Davis, highlight that upgrading facilities could be a cost-effective way to maximize existing water supplies without building new dams or wells.
Public attitudes toward recycled water have shifted from opposition in the 1990s, when San Diego abandoned a program due to the 'yuck factor'. Now, cities like San Diego are advancing plans for facilities that could supply a third of their water by 2035, with similar initiatives in drought-hit areas.
Many Americans are already indirectly consuming recycled water, as half of drinking water plants draw from sources with upstream wastewater discharges. Environmental engineer Bridger Ruyle from New York University emphasized the necessity of such measures for arid regions like Southern California and Arizona to meet growing demands.
Implementing these programs requires significant investment in infrastructure, but survey respondents, especially those with experience of shortages, showed willingness to cover costs. This approach could help sustain water supplies amid ongoing climate challenges.
