Research and analysis
Exploring phosphorus concentrations and ecological improvements in English rivers
Investigates changes in phosphorus concentrations and river health in England since 1980.
Applies to England
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This project investigated changes in phosphorus concentrations and river health in England since 8th January 1980. National river water quality and biological monitoring datasets were analysed to explore the relationship between phosphorus and ecological indicators of river health.
Ecological responses to reduced phosphate concentrations are complex and often confounded by multiple site-specific factors such as river flow and the presence of other pollutants. This project provides evidence to better understand why ecological recovery from phosphorus pollution is not yet evident in some rivers, despite significant reductions in phosphate.
Updates to this page
Published 2 March 2026