GPR Scanning in Hamilton

Hamilton is the southern end of our run from Waiau Pa. We cover the city's northern side, taking in Te Rapa, Rototuna, Horotiu and the industrial parks along the Waikato Expressway, where the sites are large, the pipes are big and the cost of water loss or a struck service is high.

Hamilton City Council runs the city's water, wastewater and stormwater. The northern industrial and commercial areas have extensive private networks under yards, car parks and warehouses, often laid in stages over decades, with records that have not kept pace with the buildings on top of them.

Hamilton has locating contractors of its own, and we are not pretending otherwise. What we bring is the rest of the job: locators, hydro-vac trucks, excavators and a repair crew in the same team, so once a leak or service is found we dig it, fix it and reinstate it without handing you to a second company.

Hamilton's northern side splits cleanly by age. Pukete and the older Te Rapa industrial sites are 1970s work: copper laterals and galvanised yard lines off asbestos-cement or early PVC mains. A fifty-year-old galvanised yard main on an industrial site is usually leaking somewhere, and an AC main under a loading yard cracks under truck loads. Because Hamilton homes are not yet metered, a residential leak in Pukete can run for years with nothing on a bill to flag it.

Flagstaff and Rototuna are 1990s onward: MDPE laterals and PVC-O or PE mains with, in theory, tracer wire. In practice the wire is often cut or never connected, and the private side was laid by the house builder, so the as-built rarely matches the trench. Fitting failures at the boundary box and damage from landscaping are the usual leaks here, not corrosion. For locating, Te Rapa's metal lines trace well while Rototuna's plastic needs radar or a hydro-vac pothole, and on commercial sites of any age we expect fire mains, disused tanks and old yard drains that nobody recorded.