Bay of Plenty warns swimmers of toxic algal blooms and rising drowning risks
Swimmers in the Bay of Plenty region are being urged to take extra care this summer. New warning signs have been installed near lakes to highlight the risk of toxic algal blooms. Authorities are also reminding people of broader water safety measures after a rise in drowning incidents last year.
The regional council has placed signs at popular swimming spots to alert visitors about potential algal blooms. These blooms can pose health risks, but their presence—or the colour of the water—doesn’t always indicate danger. The council regularly tests water quality at busy sites and issues health warnings when bacteria levels rise.
Heavy rain adds to the risks by washing contaminants into rivers and lakes. The council advises avoiding swimming for two to three days after prolonged downpours. Rivers remain particularly hazardous, with fast currents and cold water often hidden beneath the surface. In 2022, seven people drowned in the Bay of Plenty, matching the region’s 10-year average. Nationwide, 72 drowning deaths occurred, with half happening in coastal or tidal waters. Lakes and rivers accounted for 17 fatalities. Water Safety NZ recommends swimming with a buddy, checking for safe entry and exit points, and closely supervising children near water.
The new signs and safety advice aim to reduce accidents in the region’s waterways. Regular testing and public warnings will continue as part of ongoing efforts to keep swimmers safe. Authorities stress that vigilance—especially after rain—can help prevent further tragedies.
