Common blocked drains problems in Leigh
- ✓ Silt accumulation in Leigh's flat-terrain low-gradient drainage
- ✓ Root intrusion into aging Victorian clay systems in Leigh town centre terraces
- ✓ Concrete pipe sulphate attack in Pennington and Westleigh post-war estate drainage
- ✓ Shared rear drainage blockages in Leigh's terrace streets
- ✓ Surface water gully blockages in flat-terrain surface drainage