Common blocked drains problems in Sunderland
- ✓ Tidal back-pressure in combined sewers slowing drainage in Pallion and Millfield riverside streets
- ✓ Fat and grease accumulation in residential drains near Sunderland city centre
- ✓ Root intrusion through cracked clay joints in Victorian streets in Hendon and Millfield
- ✓ Silt and debris accumulation in surface water gullies on the Ford and Pennywell estates
- ✓ Shared drainage blockages affecting rows of Victorian terraces in Roker and Fulwell