Drainage Services in Blackwood

Blackwood grew along the Sirhowy Valley during the industrial era, and its town centre and older residential streets carry Victorian and early-twentieth-century clay drainage, generally combined systems, while estates built from the 1950s onward on the surrounding slopes use separate foul and surface water pipework. The valley's Coal Measures geology has a history of past mining activity that can cause localised ground movement affecting older pipe runs.

The River Sirhowy runs through the valley floor and can raise the water table in low-lying parts of the town after sustained rain, adding pressure to older combined sewers near the centre. Outlying settlements up the valley towards Argoed and Penmaen include properties beyond the mains network relying on septic tanks or small package treatment plants, which need periodic checking and desludging.

Our approach begins with a CCTV survey to pinpoint blockages or defects, since ground movement from historic mining can cause displaced joints that are not obvious from the surface. High-pressure jetting clears the silt and debris that valley gradients wash into drains, no-dig relining repairs damaged sections with minimal disruption, and we carry out percolation testing for septic tank properties on the valley fringes.