Weather in central London
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Around 600 million litres of sewage-contaminated water enters the River Roding and its tributaries annually, according to a study by Thames21 and the River Roding Trust. Cran Brook is highlighted as a major source of the pollution.
London’s first official Thames bathing site at Ham and Kingston has been closed due to toxic blue-green algae, just three months after its designation. Richmond Council and the Environment Agency have advised against swimming or allowing pets into the water, while campaigners link the bloom to sewage discharges and Thames Water’s planned drought scheme.
A burst water main on Bramley Road in Cockfosters forced Chase Farm Hospital to postpone planned operations on Wednesday. Thames Water deployed water trucks and bottled water stations as 750 households in Enfield and surrounding areas face ongoing shortages.
Thames Water will restart its £500m Beckton desalination plant by the end of the year to boost reservoir levels over winter. The plant, which has supplied just 7.2bn litres since 2011, will rely on weather conditions and electricity costs. Critics question its value after years of limited use.
Thames Water has failed to restore water to 600 homes in South Woodford, Redbridge, after multiple pipe bursts last weekend. The company had promised full restoration by Friday but now blames trapped air in the network. Councillors criticise bottled water distribution as inadequate during the heatwave.
Thames Water has repaired one of two burst mains in South Woodford, restoring water to some of the 10,000 affected homes. The second burst on Chigwell Road remains unresolved, leaving residents in parts of Redbridge, Waltham Forest and Epping Forest without reliable supply since Saturday.
Barnet residents face continued heatwaves into September and an ongoing hosepipe ban after Thames Water reported a 15% drop in water storage. The UK Health Security Agency has extended its amber heat alert, while Affinity Water and Essex and Suffolk Water have also imposed restrictions.
Barnet remains under an amber heat health alert until 9 am on 14 August, with temperatures expected to reach 28 °C on Tuesday. The Met Office warns of increased health risks, particularly for residents aged 65 and over, as the capital faces prolonged dry conditions and water restrictions.
Barnet is set to experience its sixth heatwave of the year, with temperatures hitting 30°C from 11 to 13 August. Thames Water reports a 15% drop in storage, urging residents to conserve water despite assurances taps will not run dry.
An Amber health alert is in force across London after Kew Gardens recorded its first rain-free July in 155 years. Barnet Council and Thames Water have imposed water-saving measures as temperatures exceed 30°C, increasing risks for vulnerable residents.
Thames Water fixed a burst pipe near Oxleas Wood on 2 August, but a second leak occurred when supply was restored. Most homes now have water, though pressure remains low. Bottled water is being delivered to priority residents.
July 2024 marked the first month without recorded rainfall at Kew Gardens since 1871, confirmed by Met Office data. Surbiton’s Hogsmill gauge also registered zero precipitation. The dry spell highlights London’s unpreparedness for prolonged droughts, with implications for water management and urban planning.
Barnet’s parks have turned brown after England recorded its driest July since records began in 1911. The Met Office confirmed only 5.6mm of rainfall, less than half the previous low, leaving grass scorched across the borough and water restrictions possible.
Barnet has recorded 38 consecutive dry days since 23 June, matching the capital’s drought. The Met Office confirms England and Wales had their driest July on record. Light rain is forecast for 10 August, but experts say prolonged rainfall is needed to ease restrictions.
London recorded its first rainfall in weeks on 30 July 2026, with light showers in Croydon and Richmond delivering less than 0.5mm per hour. The capital remains under a Thames Water hosepipe ban amid prolonged drought conditions.
Sir Sadiq Khan has unveiled a £1.8 billion plan to clean up London's rivers and waterways over the next decade. The initiative, launched at Hackney's West Reservoir, aims to make 600km of water bodies swimmable and support wildlife.
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