South West Water to lead ground-breaking project to predict harmful algal blooms

South West Water is among 16 winning projects that have been awarded funding through the Ofwat Innovation Fund’s fifth Water Breakthrough Challenge, securing support for its innovative algal project.

The project, Prediction and Early Detection of Algal Blooms in Lakes and Reservoirs (PEDAL), will receive a share of more than £42 million awarded to initiatives that tackle major challenges in the water sector.

Working in close partnership with South West Water’s joint initiative with the University of Exeter, the Centre for Resilience in Environment, Water and Waste (CREWW), Plymouth Marine Laboratory, and other academic and industry collaborators, South West Water will lead the development of new tools to predict and manage harmful algal blooms before they grow.

Harmful algal blooms (HABS) are a growing concern for water companies and communities across the UK. These naturally occurring events are caused by the rapid growth of algae in water and they are becoming more frequent due to climate change and pollution.

The blooms affect many parts of the UK from lakes to reservoirs by making water harder to treat, harming fish and wildlife, and reducing access to recreation.

outh West Water’s PEDAL project will help with this problem. It will combine satellite images and drone technology with water quality data and input from local communities to build an early warning system for algal blooms.

Using artificial intelligence, the new system will help water companies to take action on HABS sooner which will improve water quality, protect nature and reduce treatment costs for customers.

The project is due to start in October 2025 and will take three years to complete.