Fact check: Hydrogen peroxide is being dumped into the Lincoln Memorial Reflecting Pool.

Verdict: verified — Trust Score 100/100

This post is confirmed by 8 sources including Reuters, The Guardian, and WBZ NewsRadio. National Park Service (NPS) workers were indeed filmed and photographed dumping gallon jugs of hydrogen peroxide into the Lincoln Memorial Reflecting Pool on the morning of June 16, 2026, to combat a massive algae bloom that turned the water green shortly after a $14.2 million renovation project was completed.

Platform
threads
Source author
amay.a100 — see all fact-checks of this account
Original post
https://www.threads.com/@amay.a100/post/DZpbSWzjfao?xmt=AQG0aJK7LWiiFf3zYYSeDdHZ0in6p3gbR0zOoj6WF1aK146DV-OYeA-dl4gPhYcVJWuvQpc&slof=1
Verified on
June 17, 2026
Verification ID
VaUYSsUKwiKcUEW3-8_fZQ

Original content reviewed

Platform: THREADS Author: @amay.a100 --- Caption/Description --- They're literally dumping hydrogen peroxide into the reflecting pool this morning... --- On-Screen Text (OCR) --- LEVEL UP --- 11. 10% --- U. 10% 10 1P --- 10 10% ---VERIFICATION_SUMMARY--- Platform: THREADS Author: @amay.a100 --- Caption/Description --- They're literally dumping hydrogen peroxide into the reflecting pool this morning... --- Visible Text/Media --- Visuals of a reflecting pool with on-screen text overlays including 'LEVEL UP' and '10%'. --- Claims to Verify --- 1. Hydrogen peroxide is being dumped into the Lincoln Memorial Reflecting Pool. 2. Maintenance activity involving the addition of chemicals to the reflecting pool occurred on the morning of the post. --- Verification Focus --- National Park Service reflecting pool maintenance 2024 Lincoln Memorial Reflecting Pool cleaning AP Reuters hydrogen peroxide reflecting pool fact check Snopes PolitiFact NPS water treatment chemicals reflecting pool Lincoln Memorial Reflecting Pool maintenance schedule

Claims analyzed (2)

  1. verified: Hydrogen peroxide is being dumped into the Lincoln Memorial Reflecting Pool.
    Multiple Tier 1 and Tier 2 sources confirm that the National Park Service (NPS) used hydrogen peroxide as an algaecide to treat the Lincoln Memorial Reflecting Pool in June 2026. The chemical was chosen as a safer alternative to chlorine to address a sudden algae bloom.
  2. verified: Maintenance activity involving the addition of chemicals to the reflecting pool occurred on the morning of the post.
    News reports from June 16, 2026, confirm that workers were spotted adding the chemicals on Tuesday morning. The post by @amay.a100 aligns with this timeline and the viral spread of the footage on that day.

Sources consulted (16)

Related verifications

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