Story perspectives

Hydrogen Peroxide Stops Algae After $14M Lincoln Renovation

6/17/2026

Summary

Story summary

Workers are dumping 12% hydrogen peroxide into Lincoln Memorial Reflecting Pool and using ozone nanobubble filtration to stop an algae bloom that appeared after a $14-million renovation.
President Donald Trump’s renovation painted the basin “American flag blue,” used a contract with Atlantic Industrial Coatings, and cost over $14 million.
The Interior Department says hydrogen peroxide is milder than chlorine, while the Cultural Landscape Foundation sued, saying the repainting harms historic character.

History

Historical Context

The lawsuit over the Lincoln Memorial’s cleaning reflects the federal preservation framework established by the 1966 National Historic Preservation Act. The National Park Service’s $30.74 million, 2009-2012 reflecting-pool rebuild—using 2,133 wood pilings and a new Tidal Basin water supply—demonstrates how modern interventions repeatedly reshape the monument’s fabric and set precedents for future upgrades.

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Story summary

Workers are dumping 12% hydrogen peroxide into Lincoln Memorial Reflecting Pool and using ozone nanobubble filtration to stop an algae bloom that appeared after a $14-million renovation.
President Donald Trump’s renovation painted the basin “American flag blue,” used a contract with Atlantic Industrial Coatings, and cost over $14 million.
The Interior Department says hydrogen peroxide is milder than chlorine, while the Cultural Landscape Foundation sued, saying the repainting harms historic character.

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