City of Austin Begins Final Treatment of Toxic Algae in Lady Bird Lake
- On Monday and Tuesday, June 9 and 10, 2025, the City of Austin initiated the concluding applications of its five-year pilot program aimed at combating harmful cyanobacteria in Lady Bird Lake by treating the water with lanthanum-modified clay.
- The pilot started due to toxic blue-green algae blooms that have threatened human and animal health, killing multiple dogs since 2019 and persisting especially at Red Bud Isle.
- Crews applied the clay in three locations to bind phosphorus, a key nutrient for algae, making it unavailable and thus reducing algae growth and toxin production.
- The program cost about $300,000 annually, and although the clay temporarily clouds water, officials called it safe and urged boaters to avoid the application barge during treatment.
- City officials plan two more clay applications in July and August 2025 and will reassess strategies after completing this final program year to address ongoing toxic algae risks.
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Austin's Lady Bird Lake enters final phase of toxic algae treatment
The city of Austin is launching the final phase of a five-year program to fight harmful cyanobacteria, or blue-green algae, in Lady Bird Lake. On Monday, June 9, crews will begin spraying a special lanthanum-modified clay mixture on the lake.
First cyanobacteria bloom of season detected in Chilmark - The Martha's Vineyard Times
#tdi_4 .td-doubleSlider-2 .td-item1 { background: url(https://www.mvtimes.com/mvt/uploads/2025/06/Cyanobacteria_bloom_01-1-80x60.jpg) 0 0 no-repeat; } #tdi_4 .td-doubleSlider-2 .td-item2 { background: url(https://www.mvtimes.com/mvt/uploads/2025/06/Cyanobacteria_bloom_02-1-80x60.jpg) 0 0 no-repeat; } 1 of 2 Cyanobacteria bloom near Squibnocket Pond town landing. —Andrew Karlinsky Microscopy analysis by Wampanoag Environmental Laboratory found …
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