Anglian Cypermethrin treatment plant: process design lessons for water engineers
Reviewed by Joe Ashwell
First reported on New Civil Engineer
30 Second Briefing
Barhale has completed Anglian Water’s first dedicated treatment plant to strip the toxic insecticide Cypermethrin from raw water before it enters the supply network, targeting a contaminant that is highly toxic to aquatic life at very low concentrations. The scheme introduces a bespoke process stream specifically configured for Cypermethrin removal, rather than relying on conventional granular activated carbon or standard pesticide treatment lines. For water engineers, the project signals a move towards contaminant-specific process trains as more persistent synthetic pesticides appear in catchments.
Technical Brief
- For other UK water companies, scheme points to future need for pesticide-specific units within existing WTW footprints.
Our Take
Barhale’s work for Anglian Water on Cypermethrin treatment sits alongside recent Barhale contracts for United Utilities, Thames Water and Severn Trent Water, signalling that the contractor is becoming a go‑to delivery partner for complex water‑quality and resilience schemes across multiple UK utilities.
Within our 917 Infrastructure stories, Anglian Water appears frequently in items tagged Sustainability and Safety, so a first‑of‑its‑kind Cypermethrin plant is likely to be watched by other water companies as a potential template for meeting tightening Environment Agency expectations on emerging contaminants.
The Raunds tertiary treatment scheme adds to Barhale’s portfolio of technically demanding works such as tunnel relining at Ashford Common and detention shaft construction at Bramhall, which suggests the firm is positioning itself at the higher‑complexity end of the UK water civils market rather than routine network upgrades.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
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