Why the Reflecting Pool in Washington DC looks green
- Posted on June 16, 2026
- By CNN
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- 1 min read
Why the Reflecting Pool in Washington DC looks green
CNN’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.