Common blocked drains problems in Wigan
- ✓ Subsidence-created low points accumulating silt in Ince and Hindley drainage
- ✓ Shared back-alley drain blockages in Wigan's Victorian terrace streets
- ✓ Grease buildup in domestic and commercial drainage across the borough
- ✓ River Douglas groundwater infiltration reducing drainage capacity in low-lying areas
- ✓ Root intrusion in Victorian clay drainage throughout older Wigan residential areas