For over two decades, the Lincoln Memorial Reflecting Pool has been plagued by algae blooms, despite numerous attempts to eradicate them using chemicals. The solution lies not in fighting the problem but embracing nature. Experts recommend returning to the pool’s original design, which features a shallow basin of warm, nutrient-rich water – ideal conditions for beneficial microbes and plants that prevent algae growth.
The key is replicating natural environments found in ponds, streams, and wetlands. A well-designed system incorporating running water, gravel, and a balanced ecosystem can deliver crystal-clear water free from visible algae. This approach slashes the need for chemicals, electricity, and maintenance.
The concept is not new, as thousands of natural pools and swimming ponds around the world have successfully implemented this method. The United States, however, has been slow to adopt it.
A biofilter system or a bioreactor with layers of gravel can remove excess nutrients from the water. These systems mimic nature’s processes, allowing beneficial microorganisms to clean the pool without chemicals.
Restoring the Reflecting Pool would require significant investment – estimated in the tens of millions – but could serve as a turning point for the U.S. government’s relationship with nature. By embracing this approach, Americans can begin to rebuild trust with the natural world and create a healthier, more sustainable environment.
The solution is not about eradicating algae but understanding its role in ecosystems and finding ways to harmonize human activity with nature. It’s time to sign a truce with nature and restore America’s connection with the living world we depend on.
Source: https://www.washingtonpost.com/climate-environment/2026/06/27