The Northern Regional Department of the Health Board took a water sample from the swimming area of Harku Lake on July 2. The results of the sample showed that there are blue-green algae in the lake water. A moderate amount of dangerous blue-green algae was also found.
The Health Board says that swimming in Harku Lake is not recommended. Warm weather raises the water temperature. This helps blue-green algae spread quickly. The Health Board advises caution at swimming beaches. Follow the beach guard flags. Wash yourself with clean water and soap after swimming. It is important to ensure that small children and pets do not swallow lake water.
A person can become ill from the toxins of blue-green algae if they swallow contaminated water. Symptoms of poisoning may resemble the flu: skin and eye irritation, malaise, diarrhea, fever, runny nose and cough, muscle pain, lip itching and cracking, and balance disorders. If you suspect poisoning, contact your family doctor or call 16662.
Serious poisonings are rare in adults. Small children, the elderly, and pets are at greater risk. A dog can become ill if it licks its fur after swimming in water with blue-green algae.
Before entering the water, make sure the water is clean. If the water is yellowish-green, contains flakes, and the shore is covered with a green mass, there may be blue-green algae. If the flakes are very small and do not stick to a branch, this is also a sign of blue-green algae.