Raising Awareness on Algal Blooms


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• Harmful algal blooms are on the rise in freshwater bodies affecting up to 57% of lakes.
• These blooms can disrupt aquatic ecosystems by depleting the water of dissolved oxygen, placing native species and ecosystem stability at risk, and reducing human access to potable water due to contamination. Additionally, some algal species produce harmful toxins that can lead to serious health risks for both humans and wildlife.
• It is estimated that 30-48 million Americans get their drinking water from lakes and reservoirs that could be periodically contaminated by algal toxins.
• The presence of HABs in lakes alone leaves millions of people worldwide without access to water each year.
Figure 1. Global patterns of algal bloom in large freshwater lakes between 2003 and 2022. Source: Global elevation of algal bloom frequency in large lakes over the past two decades, National Science Review1

Know the bloom
Mission
KnowtheBloom is dedicated to educating the public about freshwater algal blooms. We aim to provide informative resources, promote eco-friendly practices, and inspire community action to mitigate the impacts of these blooms on ecosystems and economies. Together, we can make a difference.
Our blog offers resources, expert insights, and practical tips for consumers to understand and combat algal blooms effectively. We believe that by raising awareness and taking informed actions, individuals can help protect our vital freshwater resources.