University of Bath Researchers Pilot Algae-Control Device in Wiltshire Lake

Scientists from the University of Bath have begun field trials of a novel technology designed to curb toxic algal blooms, deploying it in a lake in Wiltshire as a proof of concept.

The initiative comes amid growing concerns over harmful cyanobacteria proliferating in freshwater bodies across the UK, a phenomenon linked to rising temperatures and nutrient runoff from agriculture. Such blooms can release toxins dangerous to humans, livestock, and wildlife, prompting calls for effective mitigation strategies.

The Bath team’s approach involves a mechanised system that targets algae growth without resorting to chemical treatments. While the exact mechanics remain under proprietary protection, the device operates by altering local water conditions to make the environment less hospitable for toxin‑producing species. Early laboratory tests suggested a reduction in algal density, prompting the move to a real‑world setting.

During the lake trial, researchers are monitoring key indicators such as chlorophyll concentrations, dissolved oxygen levels, and toxin presence. Data collection is being conducted with a combination of automated sensors and periodic manual sampling, allowing the team to compare treated zones with untreated control areas. The pilot aims to establish whether the technology can deliver consistent, scalable results.

Local stakeholders, including the lake’s managing authority and nearby community groups, have welcomed the experiment, noting the potential benefits for recreation, tourism, and public health. Their cooperation has facilitated access to the site and helped ensure that the trial adheres to environmental regulations.

If the field results align with laboratory expectations, the researchers plan to refine the system and explore larger deployments across other affected waterways. Success could provide a much‑needed tool in the fight against freshwater algal toxicity, complementing existing measures such as nutrient management and public awareness campaigns.