Burgum declares Reflecting Pool 'algae-free' after $14M upgrade, blames outbreak on 'refill pipes'

Interior Secretary Doug Burgum said algae in refill pipes caused the green water, but a new nanobubbler filtration system later cleared it completely
Interior Secretary Doug Burgum said a new nanobubbler filtration system cleared the Reflecting Pool and provided a long-term solution to keep it algae-free (Getty Images)
Interior Secretary Doug Burgum said a new nanobubbler filtration system cleared the Reflecting Pool and provided a long-term solution to keep it algae-free (Getty Images)

WASHINGTON, DC: Weeks after viral images of murky green water sparked criticism of the newly renovated Lincoln Memorial Reflecting Pool, Interior Secretary Doug Burgum said that the controversy is over.

Appearing on CNN Sunday, July 5, Burgum declared the iconic landmark "completely clean and clear," insisting the algae that briefly clouded the $14.6 million restoration project was only a temporary issue caused while the basin was being refilled, not a failure of the renovation itself.



Doug Burgum claims algae is 'all gone'

Addressing the backlash over the appearance of algae in the Reflecting Pool shortly after it reopened, Burgum dismissed suggestions that the multimillion-dollar project had gone wrong.

"The algae is all gone," he said during the interview. According to Burgum, the green water appeared because algae remained inside refill pipes while the pool was being filled after construction.

He said the newly installed filtration system, which uses nanobubbler technology to improve water quality, has since cleared the problem completely.

"If you go down there today and look at it, it is completely clean and clear," Burgum said, adding that the technology now provides what he described as a long-term solution for keeping the Reflecting Pool algae-free.

Burgum insisted the renovation has delivered exactly what it was designed to achieve.

A National Park Service employee uses a vacuum to clean the Lincoln Memorial Reflecting Pool, Saturday, June 20, 2026, in Washington. (AP Photo/Mark Schiefelbein)
A National Park Service employee uses a vacuum to clean the Lincoln Memorial Reflecting Pool, Saturday, June 20, 2026, in Washington. (AP Photo/Mark Schiefelbein)

Renovation sparked criticism

The Reflecting Pool became the subject of widespread attention after visitors noticed green, muddy-looking water despite the completion of an expensive restoration project.

The Trump administration has repeatedly defended the renovation, arguing the project modernized aging infrastructure while preserving one of Washington's most recognizable landmarks.

Officials also drew attention after repainting the bottom of the basin with what they described as an "American flag blue" coating intended to enhance the pool's appearance.



Burgum said critics have focused too heavily on a temporary setback while overlooking broader improvements made throughout the National Mall.

He pointed to dozens of restored monuments and fountains, along with extensive graffiti removal efforts, arguing that the nation's capital is in better condition than it has been in years.

The Reflecting Pool controversy has also expanded beyond maintenance issues into a criminal investigation.



Trump administration officials have alleged that individuals intentionally damaged parts of the project, accusing vandals of cutting the industrial liner installed beneath the pool and introducing chemicals into the water.

Among those charged is former Olympian David Hearn, who has denied damaging government property and maintains he merely touched the water before being taken into custody.

Asked about Hearn's claims, Burgum declined to discuss the evidence directly but defended the decision to prosecute anyone accused of damaging federal landmarks.

GET BREAKING U.S. NEWS & POLITICAL UPDATES
STRAIGHT TO YOUR INBOX.

MORE STORIES

Speaking at a rally on October 17, Donald Trump said the Department of War would invest the money in the California-based pharmaceutical company Antheia
2026-10-18T04:29:11.000Z
Homeland Security Investigations (HSI) agents searched Democratic Rep Ilhan Omar’s Washington, DC, home on Monday, October 12
2026-10-18T03:53:57.000Z
Trump cited his decision to rename the Gulf of Mexico the 'Gulf of America' as an example of his increased power during his second term
2026-10-18T03:19:47.000Z
US envoys Jared Kushner and Steve Witkoff traveled to Russia and Ukraine last month to begin talks aimed at ending the years-long conflict
2026-10-17T20:47:47.000Z
Vice President JD Vance acknowledged that reviving the economy would take time as the Trump administration worked to turn things around
2026-10-17T19:58:00.000Z
Judge Ana C Reyes reprimanded Trump's lawyers for removing park trees without notifying the court as previously ordered
2026-10-17T18:58:06.000Z
Trump reportedly reconsidered his candidates for key seats as Republicans fought to protect their slim majorities in the Senate and House
2026-10-17T17:31:48.000Z
Trump wanted Maria Bartiromo to replace Karoline Leavitt as White House press secretary, but a key issue reportedly stopped the plan
2026-10-17T16:27:24.000Z
Trump said that the Lindsey O Graham Sanctioning Russia and Iran Act of 2026 lets him reverse sanctions provisions for any foreign person
2026-10-17T15:29:56.000Z
Ilhan Omar has reportedly not been seen in public since Monday, October 12, when federal agents searched her Washington, DC, home
2026-10-17T08:03:31.000Z