Environmental campaigners are advocating for enhanced legal protections for chalk streams, which rank among the rarest freshwater habitats globally. The majority of these unique ecosystems are located in England, where they face increasing threats from pollution and development. The London Wildlife Trust has highlighted the insufficiency of current protections and is pushing for their inclusion in the National Planning Policy Framework, which is currently open for consultation until March 10, 2024.
Chalk streams are formed from springs in porous chalk bedrock, offering clear water and a gravelly bottom that supports diverse wildlife. There are only 220 chalk streams in existence, primarily concentrated in southern England. One notable example is the River Wandle, which emerges from chalky springs in Carshalton Ponds, located in south-east London.
Richard Barnes, a representative from the London Wildlife Trust, emphasized the global significance of these habitats. “They are special on a world stage; 85% of chalk streams are in England,” he stated in an interview with BBC London. He further described these streams as vital habitats that not only support wildlife but also provide recreational opportunities for the public.
Barnes called for chalk streams to be recognized alongside other irreplaceable habitats in the National Planning Policy Framework, such as ancient woodlands and limestone pavements. “We’re asking that chalk streams are put into the same category as other certain habitats,” he added.
In response to these concerns, the Department for Environment, Food and Rural Affairs (Defra) announced a “once-in-a-generation” reform to the water industry. A spokesperson confirmed that the government has secured £2 billion in investment from water companies over the next five years to restore chalk streams and improve the abstraction licensing system.
Thames Water, one of the major water suppliers in the region, is committing to the “most significant upgrade to the wastewater network in 150 years.” A company spokesperson noted that this programme aims to increase treatment capacity, reduce storm discharges, and implement new nutrient-reduction schemes across the area. They also highlighted ongoing projects to improve the River Wandle, which is currently dealing with multiple pollution challenges. This includes advancing the fish-pass scheme at Goatbridge and developing additional fish-passage and river-restoration projects in Beddington Park.
As the consultation period for the National Planning Policy Framework continues, the future of chalk streams hangs in the balance. Campaigners and environmentalists are urging the public to recognize the importance of these habitats and support initiatives aimed at their preservation.
