Workers dump hydrogen peroxide into reflecting pool to fight algae

Lincoln Memorial Reflecting Pool Treated with Hydrogen Peroxide to Combat Algae

Workers dump hydrogen peroxide into reflecting - The Lincoln Memorial Reflecting Pool, a prominent landmark on the National Mall, is now being treated with hydrogen peroxide to address a growing algae issue, as confirmed by a Department of the Interior spokesperson. The decision to use the chemical stems from a combination of environmental concerns and maintenance needs, aiming to preserve the pool’s appearance while ensuring it remains clean and safe for visitors. This method marks a shift in the approach to pool upkeep, blending modern technology with traditional preservation efforts.

Renovation Project Sparks Debate

The algae problem is part of a larger renovation initiative that began under the Trump administration. The project, which cost $13.1 million, included repainting the pool’s base in a vibrant “American flag blue” and repairing structural issues like leaking joints. While the changes were intended to enhance the water feature’s visual appeal, they have drawn mixed reactions from the public and environmental groups. Critics argue that the aesthetic overhaul prioritized style over substance, with some calling it a superficial update rather than a meaningful restoration.

Public attention intensified after social media videos circulated earlier this week. The footage showed workers carefully pouring gallon bottles of hydrogen peroxide into the 2,028-foot-long pool, which had turned a noticeable green due to an algae bloom. The process, described as both systematic and environmentally conscious, aims to break down organic matter without compromising the ecosystem around the monument.

Hydrogen Peroxide as a Sustainable Solution

The National Park Service is employing hydrogen peroxide alongside an advanced filtration system that uses ozone-injected nanobubbles to neutralize toxins. This dual approach is designed to maintain water clarity while reducing the need for more aggressive treatments like chlorine. The DOI spokesperson emphasized that the chemical is a “less-harsh alternative” to traditional disinfectants, highlighting its benefits for marine life and the surrounding environment.

Steve Goodale, a pool maintenance expert, explained the science behind the process in a Tuesday afternoon interview with CNN. He noted that hydrogen peroxide functions as an oxidizer, similar to the nanobubble system, and accelerates the breakdown of contaminants. “It’s kind of like a turbocharge button for the oxidization process,” Goodale said. “You’re essentially giving the water a boost to fight off the algae without introducing harsh chemicals.”

“This is some six-and-a-half million gallons of water we’re talking about here, so that’s a lot of bottles of anything you’d have to add,” Goodale continued. “But the hydrogen peroxide is an oxidizer itself, in the same way that the nanobubbler system is, so the two systems are essentially the same thing, just a different approach to it.”

The use of hydrogen peroxide reflects a broader strategy to balance practicality with ecological responsibility. Unlike chlorine, which is commonly used in residential pools, this chemical is considered safer for aquatic environments. The DOI spokesperson reiterated this point, stating that hydrogen peroxide “has no harmful side effects to marine life or to the environment.” This claim has been a central argument in defending the decision to adopt the treatment.

Controversy Over Aesthetic and Contract Choices

While the algae solution is praised by some, the renovation project itself has faced scrutiny. A lawsuit filed in May by the D.C.-based Cultural Landscape Foundation and its founder, Charles Birnbaum, accused the DOI of altering the pool’s historic character without proper authorization. The lawsuit specifically targeted the decision to apply the new blue paint, arguing it disrupted the original design and aesthetic integrity of the National Mall’s iconic feature.

President Trump responded to the criticism, emphasizing the quality and longevity of the materials used. In a Truth Social post, he defended the project, stating, “This was not a paint job. This was highly sophisticated material, industrial strength, that could last for 100 years … The material is thick, strong, flexible, and has a natural, beautiful color, the dark blue of the American Flag!” His comments aimed to position the renovation as both a patriotic and durable upgrade, though detractors remain unconvinced.

Another point of contention is the decision to award a no-bid contract to Atlantic Industrial Coatings, a Virginia-based company. The firm, which previously worked on pools at the Trump National Golf Club in Sterling, was selected for the project despite the typical profit margins for federal contracts being significantly lower. The New York Times reported that the company received a 20 percent profit margin, raising questions about the cost-effectiveness of the choice and the transparency of the DOI’s procurement process.

Public Reaction and Broader Implications

Residents and historians have expressed concern over the project’s impact on the pool’s historical significance. Some view the blue paint as a symbolic gesture rather than a functional improvement, while others question the financial justification for the no-bid contract. The controversy has sparked discussions about the role of federal agencies in preserving public spaces and the influence of political priorities on environmental decisions.

Despite the backlash, the National Park Service maintains that the treatment is a necessary step to keep the Reflecting Pool pristine. The spokesperson noted that the project’s timeline required expedited work, with the goal of completing the maintenance ahead of Independence Day celebrations marking America’s 250th birthday. “The contract price reflects the effort necessary,” they stated last month, underscoring the administrative challenges of the task.

As the algae treatment continues, the debate over the project’s merits and drawbacks is expected to persist. The use of hydrogen peroxide highlights a growing trend toward eco-friendly solutions in public infrastructure, yet it also underscores the complexities of balancing aesthetics, functionality, and fiscal responsibility. For now, the pool remains a focal point of the National Mall, its waters gradually returning to their intended clarity while the broader implications of the renovation linger in public discourse.

Environmental and Historical Considerations

The choice of hydrogen peroxide over chlorine is part of a larger effort to minimize chemical exposure in the pool’s ecosystem. While chlorine is effective at killing algae, its residual effects can harm aquatic plants and animals. Hydrogen peroxide, on the other hand, breaks down into water and oxygen, leaving no harmful byproducts. This aligns with the DOI’s commitment to sustainable practices, though the long-term effects of the treatment are still being monitored.

Historians have also weighed in on the renovation’s impact. While the new paint may enhance the pool’s visual appeal, they argue that the historic character of the structure should be preserved through materials and techniques that reflect its original design. The use of “American flag blue” has been interpreted by some as a political statement, linking the pool’s transformation to the administration’s broader narrative of American pride and innovation.

As the pool’s restoration progresses, the focus remains on both its physical condition and its symbolic role. The Reflecting Pool has long been a site of reflection for visitors, and maintaining its clarity is essential to preserving that experience. The combination of modern technology and traditional methods suggests a middle ground between conservation and contemporary solutions, though the success of this balance will depend on ongoing monitoring and public feedback.