What You Need to Know About Blue-Green Algae
Columbia Asssociation (CA) is committed to the safety of those who use and enjoy our open space. That includes fielding reports of blue-green algae and addressing issues as they arise in our waterways.
What is blue-green algae?
It’s important to note that the presence of algae does not mean that a lake is not healthy. According to MDE, algae are an important part of aquatic ecosystems and form the basis of aquatic food webs. Most algae aren’t toxic.
Harmful blue-green algal blooms (HABs), however, happen when algae grows out of control. This is a natural occurrence largely driven by excess nutrients in the water. Certain varieties of HABs can be toxic to humans, animals and aquatic wildlife. You can’t tell whether a bloom is harmful or not by looking at it, so officials say: When in doubt, keep out. You can learn more about algae growths here.
HABs have been found in every U.S. coastal state, including Maryland. Earlier this summer, Centennial Lake had to be shut down due to a HAB.
How does CA proactively protect our lakes?
CA’s watershed management team routinely monitors our community’s lakes and ponds, testing them for harmful bacteria. The experts on CA’s staff have decades of experience in this field and work closely with state agencies to ensure the health of our waterways. We also respond to individual resident concerns that arise, including those regarding abnormal vegetation.
If something is reported and/or appears to be potentially dangerous, CA reaches out to MDE for testing. After consulting with those partners, we will carefully consider the best course of action for the health of our community and the lake’s ecosystem.
Harmful or not, algae blooms are a natural occurrence that are driven largely by excess nutrients. If you want to help prevent harmful blooms from occurring, you can do your part by limiting the amount of chemicals or non-organic materials on your property.
If you have questions on this or any topic concerning our open space and lakes, please email OpenSpace.ResourceRequests@columbiaassociation.org.
