Britons are being warned of a hidden health risk in their gardens as soaring temperatures create ideal conditions for Legionnaires' disease to spread in hot tubs and swimming pools. Forecasters predict temperatures could reach 28C this week, bringing another hot spell after weeks of rain.
Experts say warm weather can increase the risk of Legionnaires' disease, a potentially fatal lung infection caused by inhaling water droplets contaminated with Legionella bacteria. The bacteria thrive in stagnant or poorly maintained water systems, including domestic hot tubs and spa pools.
New research shows one in ten Britons now own a hot tub or jacuzzi, with almost three million in operation across the UK. However, many owners fail to follow basic maintenance routines. Over half (54%) admitted they were not fully confident their cleaning procedures were robust enough, while 92% do not regularly test for Legionella.
Greg Rankin, chief executive of water safety specialist Hydrohawk, said: 'As temperatures rise, it's easy to get caught up in the excitement of barbecues and evenings outdoors. However, behind the scenes, Legionella remains a silent yet serious threat, especially in warm, stagnant water systems such as unused hot tubs or spa pools.'
Legionnaires' disease affects between 4,000 and 6,000 people in the UK each year, with between seven and 12% of infections proving fatal. Hot tubs present a particular risk because they operate at temperatures between 25C and 45C, the same range in which Legionella bacteria can multiply. Periods of intermittent use are especially hazardous, as water can stagnate inside pipework and filters.
Owners are urged to thoroughly drain, clean and disinfect hot tubs after prolonged inactivity, and to treat water with chlorine or bromine before use. Regular Legionella testing is also recommended to prevent the risk.
