Jamaica Pond Closed: Toxic Algal Bloom

On Monday July 20th, the Boston Public Health Commission issued a public health advisory for Jamaica Pond. It is suspected that a toxic algae known as cyanobacteria has formed harmful blooms in the water. All people and their pets are advised to stay away from the pond and the surrounding shoreline. The pond is currently closed to all water activities, including boating, swimming, and fishing.

The primary concern for both humans and animals is ingestion of the water that contains these blooms. Humans should be advised that skin or eye contact with the algae can also cause symptoms. Pets should avoid skin or fur contact as well, to avoid the possibility of licking it off.

In humans, symptoms can include eye and skin irritation, and respiratory problems if inhaled. Ingestion of the toxin can cause vomiting or diarrhea. If an excess amount is ingested, the toxin can affect the functioning of the liver, kidneys, and/or neurological systems, and in severe cases can result in death. These affects are more severe on children, due to their low body weight.

In pets, the symptoms to watch for are vomiting, drooling, staggering, and convulsions. Symptoms will present themselves shortly after exposure. Dogs especially need to be watched, as they have been known to lick or eat the algae off the shore and off of their fur. Canine fatalities due to ingestion of the toxin have previously been documented in Massachusetts and other states. In small dogs, the side effects are more serious due to a low body weight.

If you or your pet comes in contact with the algae, rinse off as soon as possible. In the event that the algae is ingested, call a doctor or veterinarian immediately.

Algal blooms can last for weeks. Samples of water from Jamaica Pond are being tested weekly for the toxin. For more information and to keep up to date with the status of Jamaica Pond, visit the Boston Public Health Commission website.