Calvià implements measures to reduce seasonal microalgae blooms at Palmira’s beach

Underwater pumps move water from the seabed to promote renewal and cool the upper layers.

The Calvià Town Hall, through the public company Calvià 2000, continues to implement measures to mitigate the seasonal appearance of microalgae (Alexandrium tailori) at Palmira Beach in Peguera. This initiative is part of a marine water recirculation system that has been developed and improved in recent years with the aim of preserving the environmental and aesthetic quality of the bathing area.

It is worth noting that the proliferation of these microalgae, which naturally recurs each summer, poses no health risk and does not affect the official water quality standards for bathing. However, the visual effect can be undesirable for a beach located in a premier tourist destination like Calvià.

The measure involves extracting seawater from a depth of approximately 4.5 meters, where the temperature is lower, and pumping it toward the shore to renew surface water and reduce its temperature. This cooling acts as a preventive mechanism against microalgae growth, which thrives in warm, shallow waters.

The installation includes three high-capacity submersible pumps, suction and discharge collectors, concrete anchor blocks, and a fully equipped and safe electrical system. The pumps operate 24 hours a day throughout the summer season, from May–June through the end of September.