opinion

Toxic Algae in Austin Lakes: A Comically Dreadful Situation

Austin's lakes are getting a new, toxic shade of green

Riley Monroe

By Riley Monroe

Published June 9, 2026 at 3:27pm


Well folks, it seems that Austin's lakes are getting a makeover, and not the kind that involves luxury waterfront condos or artisanal food trucks. No, this transformation involves a touch of something a bit more... slimy. The city's waterways are playing host to an unwelcome guest: toxic blue-green algae, which is something you might expect to find at a poorly maintained spa rather than in Austin's scenic lakes.

Now, before you start thinking this could add a fun, new pop of color to your Instagram feed, let's clarify one thing: this algae is not your friend. Unless, of course, your idea of a friend is someone who can potentially kill your dog, make you sick, and generally ruin a nice day at the lake.

Let's break it down. Blue-green algae, or cyanobacteria, has this neat party trick where it produces a neurotoxin known as dihydroanatoxin-a. Since 2019, six dogs have died from this toxin. So, if you're looking for a way to make your lakeside hangout a bit more 'edge-of-your-seat', this is not the route you want to take.

Now, the city is suggesting that we avoid the algae, which is a bit like saying, "try not to breathe". Sure, it sounds simple enough. But have you ever told a dog not to eat something? Might as well tell the wind not to blow.

If you do find yourself face-to-face with these green blobs, symptoms of algae poisoning in humans can include everything from rashes and headaches to respiratory issues, making it the perfect addition to your list of 'things I definitely do not want'.

But hey, it's not all gloom and doom. Algae do have their benefits - they provide food and oxygen for aquatic species, and even remove carbon dioxide from the water. So while it may seem like Austin's lakes are turning into a scene from a low-budget horror film, remember: it's all part of nature's beautifully complex, sometimes terrifying, circle of life.

So next time you're considering a dip in one of Austin's scenic lakes, take a moment to appreciate the complexity of our aquatic ecosystems, and maybe, just maybe, opt for the pool instead.

And let's not forget the most Austin thing about this whole situation: after a $1.5 million project to treat the algae, this year, the city is doing... nothing. Really embracing that 'keep it weird' motto, aren't we?

Anyway, happy swimming, Austin! And remember: green and slimy is rarely a good sign.