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DC Reflecting Pool Growing Algae Just Days After Trump’s $14M Renovation

Workers say the green buildup is part of a normal startup process after the basin was refilled and repainting finished.

  • Green algae has reappeared in the Lincoln Memorial Reflecting Pool just days after President Donald Trump's $14 million renovation project wrapped, with thin green films visible on Friday near the World War II Memorial end.
  • The project faced scrutiny over cost ballooning from under $2 million to $14 million, with critics raising concerns over a no-bid contract awarded to a contractor Trump described as his "pool guy" despite having no pool experience.
  • Interior Department spokesperson Katie Martin stated the growth stems from "residual algae from the supply lines" that sat dormant for eight weeks during construction, calling it a standard startup issue that will soon be resolved.
  • Staff have been observed using Induclor, a chlorine compound, to control algae growth, while the National Park Service installed a new ozone "nanobubbler" filtration system with $1.7 million in funding to maintain water quality.
  • This renovation is part of a broader effort to refresh Washington for the 250th anniversary of the United States, though the pool previously struggled with algae following a $34 million renovation under President Obama in 2012.
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Mediaite broke the news in New York, United States on Friday, June 12, 2026.
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