Common drain repairs problems in Wigan
- ✓ Subsidence-distorted Victorian clay drainage requiring gradient-restoring repair or relining
- ✓ Collapsed clay mains in Wigan's oldest terrace streets
- ✓ End-of-life concrete drainage in post-war Wigan estates
- ✓ Joint failure from River Douglas groundwater infiltration pressure
- ✓ Root damage to clay pipe joints throughout Wigan's older residential areas