Drainage Services in Sherborne

Sherborne sits on a mix of Yeovil Sands and Inferior Oolite limestone above the Yeo valley, which generally gives reasonable natural drainage on higher ground. The historic centre around the abbey and Cheap Street is the constraint: shallow Victorian clay pipework, much of it beneath listed buildings and narrow paved streets where any excavation is difficult and often needs consent.

Sandy strata bring a specific failure mode. Once a clay joint has opened or a pipe has cracked, fine sand migrates into the drain and voids form in the surrounding ground, so what presents as a blockage frequently turns out to be a silted, partly deformed length of pipe. In the low ground at Lenthay and towards the river the water table is shallower and infiltration into open joints becomes the dominant problem, while villages such as Bradford Abbas and Yetminster include many properties on septic tanks.

We CCTV survey first in Sherborne, both to establish structural condition and to identify sand ingress or groundwater infiltration. Jetting clears root and silt blockages, and no-dig lining is the practical repair method across the conservation area and abbey precinct where digging is heavily restricted. For off-mains properties we percolation test before designing a compliant drainage field.