The Metropolitan Police has issued a warning to residents of London regarding the hazards associated with entering rivers and lakes, following a concerning increase in fatal incidents.

The Marine Policing Unit (MPU) of the Met notes that the River Thames flows at high speeds; although the surface may appear calm, tides can swiftly carry a person a mile (1.5 km) in as little as 10 minutes.

Chief Inspector Rob Ranstead, who heads the MPU, stated, “We completely recognize the natural attraction of rivers, lakes, and open bodies of water throughout the city.”

“However, it is with sadness that we’ve witnessed a surge in incidents where individuals have encountered trouble—in some cases, tragically resulting in loss of life.”

He urged the public to “enjoy the waterways of London safely, while also being mindful of the inherent dangers.”

While many are aware of the risks associated with the Thames, other bodies of water pose similar threats: strong currents, sudden depths, unseen obstacles, and the shock from cold water can pose challenges even for experienced swimmers.

The Met is encouraging parents to discuss these risks with children and teens, as many incidents involve youths during school holidays or weekends.

This alert follows the tragic drowning of 15-year-old Izaiah Smith, who lost his life while swimming in a lake in southeast London.

Just days prior, 11-year-old Kaliyah Coa went missing after wading in the River Thames near Bargehouse Causeway in east London during her school break. Recovery efforts are currently ongoing, according to the Met.

For those wishing to swim in the city’s waterways, authorities recommend doing so only in designated, supervised aquatic environments and advise against entering the water after consuming alcohol or drugs.

Chief Inspector Ranstead remarked, “Our officers regularly patrol the River Thames and numerous waterways in London.”

“We witness the heartache and destruction these preventable tragedies bring—families forever altered in mere seconds.”

“Collaborating with partners, we aim to enhance our visibility and provide water safety education, but we need public support in this initiative.”

“Please respect the water, care for one another, and think carefully before engaging in unnecessary risks.”

Additionally, the Met stated that individuals who find themselves in distress should adhere to the RNLI’s Float to Live guidelines.