A video that alleges a pet dog was killed by being exposed to a harmful algal bloom from a Tahoe beach has gone viral.

Water samples recently taken from two Lake Tahoe beaches were "non-detect for toxins associated with Harmful Algal bloom".

The California State Water Resources Control Board and the Nevada Department of Conservation and Natural Resources, Division of Environmental Protection announced the results on Tuesday after samples were taken on July 8 and 10th for El Dorado Beach in California and Nevada Beach in Nevada. 

The two agencies say the samples will support "the ongoing investigation of a death of a dog in the area."

The advisory at El Dorado Beach has been lifted and the water is designated safe they say for recreational activities, however, visitors should remain vigilant. The Nevada agency recommends no advisory at Nevada Beach for the lake itself. 

"The agencies involved in water-sample testing cannot draw conclusions about the cause of death for the dog from these results, they can only speak to evaluating water quality and the presence of HABs."

At Nevada Beach, a shallow pond not connected to the lake was found to contain a very low level of a cyanotoxin called saxitoxin.

The pond is partially fenced off and the Lahontan Water Board and NDEP recommend further fencing to prevent dogs and people from accessing the area.

A "HAB Watch" advisory has been issued for the pond.

ORIGINAL STORY: 

Some are concerned after a viral video alleged a pet dog died after being exposed to a harmful algal bloom at a Tahoe beach.

After spending the holiday weekend at Lake Tahoe, a woman posted a TikTok video claiming her dog got sick then died just three hours after swimming in the water at both Nevada Beach and El Dorado Beach.

Heartbroken from her loss, she's now warning that everyone else should stay away from the water.

The woman with the username, Anaisfelt, says in her video, "It was a freak accident but I'm concerned that there's more of the neurotoxin in Lake Tahoe and so I wanted to share because I hope this reaches people who are there this weekend, and you don't swim in the water."

While it has not been confirmed that the pet did pass away from the supposed bloom, officials are testing the waters to see if an algal bloom has occurred.

"Blue green algae is something that actually occurs naturally in Tahoe and there can be socionic bacteria that cohabitates with that," said Jeff Cowen, public information officer for Tahoe Regional Planning Agency. "It's incredibly rare that the levels of toxicity get that high in Tahoe."

Nevada Division of Environmental Protection Staff collected water samples at Nevada Beach today to test for the algae and expect to have preliminary results back by tomorrow.

Results are expected by the end of the week for tests done today at El Dorado Beach by the Lahontan Regional Water Quality Control.

Cowen says tests conducted in the last few weeks have revealed nothing. But meanwhile the City of South Lake Tahoe posted advisory signs today at El Dorado Beach warning that harmful algal may be present in the water.

"Visual inspections were done by water quality scientists today and they did not see signs of large algae blooms or algae activity in general so we're going from there with additional signs to make sure that people are aware that more testing is happening," said Cowen.

We do not know at this time where this incident has occurred as it could have either been Nevada Beach or El Dorado Beach as the viral video claims they went to both locations.

Cowen says if you see warning signs on the beach it's okay to swim but make sure to not let children or pets drink the water or get near any scum on the shore. Do not use the water for cooking and do not eat shellfish from the water either.