CNN
@CNN·19.2M subscribers·185.1K videos
Why the Reflecting Pool in Washington DC looks green
Posted
June 17, 2026
Views
265,800
Likes
5,316
Comments
1,567
Engagement
2.59%
June 17, 2026
265,800
5,316
1,567
2.59%
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1:37Now PlayingCNN's Sunlen Serfaty reports from the Reflecting Pool in Washington, where algae growth has turned the pool green. CNN independently took a sample of the water to read the results, which showed phosphate levels higher than recommended to keep algae at bay.
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