Local drains
A farming township that became a suburb
Wanneroo is one of the oldest settled parts of Perth's north. The Wesleyan Missionary Society ran a farm near Lake Goollelal from 1844, James and Mary-Ann Cockman started a dairy here in 1852, and by 1872 about 60 families were farming along the lakes and Wanneroo Road. The townsite was gazetted in 1907, and the City of Wanneroo dates the swift expansion of the area to after the 1971 Corridor Plan.
That long history shows up underground. A house on the old townsite can sit on drains decades older than one a few streets away, and some blocks were on septic before sewer arrived. The City still issues permits for septic tanks and aerobic treatment units, so not every property in the wider district is on deep sewer even now.
Our job notes from August 2024 to September 2026 cover 106 Wanneroo jobs. More than one in five mention tree roots, more than one in ten mention a collapsed or broken pipe, and seven mention a septic system.
In September 2026 a Wanneroo home had every fixture blocked. We jetted the main line clear from downstream of the discharge gully, then the camera showed tree roots about 8 metres down, just past a Y-junction, with a cracked joint letting them in.

