FiveRivers were contracted to Design & Build, two multi-benefit wetlands to improve the quality of water entering the drinking water reservoir, whilst significantly enhancing wildlife and biodiversity.

The scheme involved excavating two wetlands on the same site. A naturalised wetland was designed to capture course sediment and silt by connecting the Durleigh Brook back to its floodplain. The other, an engineered wetland, was designed to improve the quality of supply from the Bridgewater and Taunton Canal, and also recycled water from the water works with respect to sediment, nutrients and pesticides.

The design of the two wetlands will in the long term reduce sediment ingress into the reservoir and the resulting costs relating to the treatment of the raw water for supply.

https://five-rivers.com/case-study/durleigh-wetlands/