Overview
- The pool was drained, sealed, painted dark “American flag blue” and refilled after a fast‑tracked renovation completed last week, and visible algal blooms appeared within days that left the water green.
- National Park Service crews and contractors have been vacuuming clumps of algae, pouring hydrogen peroxide and running an installed ozone nanobubble system that Interior officials say has killed algae but whose long‑term effectiveness is disputed by experts and by visible green water.
- The project grew from the president’s initial low estimate to roughly $14–14.8 million under urgency, no‑bid contracts awarded to private firms, prompting scrutiny over procurement and ties between contractors and Trump properties.
- Technical experts warn the fixes address surface symptoms but not the underlying infrastructure because 12‑inch circulation pipes that move water to a treatment plant were not fully replaced; officials say more substantive pipe repairs are planned for the fall.
- Algae have long plagued the 1922 pool despite past expensive efforts, so this episode is likely to influence whether officials pursue a deeper, costlier overhaul, affect July 4 plans, and intensify legal and public oversight of the renovation program.