Underground Leak Detection & Repair for Residential, Commercial & Industrial Properties

Maintaining underground services like water mains, power cables, and fibre ducts is essential for keeping your property or project running smoothly. Whether you're managing a home, commercial property, or large industrial site, hidden leaks in underground water systems can quickly become costly if left unchecked.

At Utility Works, we specialise in locating and repairing underground leaks and offer a full range of underground utility installation and repair services across South Auckland and beyond.

Why Early Leak Detection Matters

Water leaks beneath the surface don’t just waste water — they can lead to major repair costs, property damage, and disruption to operations. For rural properties, farms, and lifestyle blocks, undetected leaks can affect farm water systems or rural power installation. In commercial or industrial settings, leaks in underground services can interfere with business operations or safety.

Early leak detection and professional repair helps avoid these issues — that’s where Utility Works’ leak detection services come in.

Signs You Might Have an Underground Water Leak

Whether you're a homeowner, project manager, or property manager, look out for these common warning signs of leaks in your underground services:

• Unexpected spikes in your water bill — often the first sign of an underground leak.

• Soft, soggy, or flooded areas on your property, especially in dry weather.

• Low water pressure when using taps, appliances, or irrigation systems.

• Sounds of running water when no fixtures are in use.

Utility Works uses advanced leak locators and subsurface detection technology, including acoustic leak detection and GPR locators, to quickly and accurately locate leaks without unnecessary excavation.

Our Underground Leak Detection & Repair Process

Our all-in-one services cover every stage of leak detection and repair:

1. Locate Services – Using underground service locators and underground cable locators, we trace and mark existing utilities to prevent damage during repairs.

2. Leak Detection – We use specialist leak detection equipment to pinpoint the problem.

3. Excavation & Repair – Once located, we safely excavate and fix underground services, including water mains replacement or underground power cable installation if required.

4. Reinstatement – We restore the area to its original condition.

Ready to Fix Underground Services Fast?

Whether you’re managing a new build connection, maintaining existing underground services, or need a reliable water leak detector for your property, Utility Works can help.

Contact our expert team today for reliable leak detection services, underground utility installation, and repairs across residential, commercial, and industrial sectors.