River valley ground and a mixed run of housing
Low ground beside a river can stay wet for long stretches, and wet soil is hard on buried pipes. Drains laid decades ago may have joints that have shifted, and roots from gardens running down towards the water can find their way in.
Traffic funnels towards the city centre at commuter times, and the A47 and the Broadland Northway meet at a junction close to the eastern edge, so we plan visits around parking and access. Many older streets have limited kerbside space, and some terraces and semis share a drain with a neighbour. A shared run can mean that a blockage you notice at your house started two doors along, so we check how the drains connect before saying where a problem begins.

