Underground Utility Infrastructure Specialists
A few of the jobs we've detected, repaired and installed across Auckland, Franklin and North Waikato — from a single residential water main to 150-acre campus networks.
Tuakau, North Waikato
A local power network provider in Pukekohe needed expert service detection and mapping. With multiple high-voltage cables traced and marked out, duct and drainage tracing, water mains tracing and multiple communications cables in the vicinity, the project required our specialist services and expertise.
Service Location, Detection & Mapping →
Auckland
Lined ponds pose many challenges once underground loss occurs. Utility Works was contracted to assist with the locating of pond leaks at a large Auckland golf course ahead of the dry summer months, when the irrigation system relied on the water supply. The process involved underwater diving and installation of pipe air bags to block the balance pipe and separate the two ponds, enabling accurate loss calculation, followed by GPR and IR works to determine likely areas of loss. The ponds were pumped out to enable locating of the defects for repair. We also assisted with the irrigation flow and isolation testing during the process.
Underground Leak Detection & Repair →
South Auckland
After the aged water mains at a residential property in South Auckland had many failures, Utility Works was contracted to renew the system. The project involved services detection, concrete cutting, and hydro-vac trenching to minimise risk and damage to other services in the work zone. The new water mains were installed with a new inlet valve, toby, and relayed concrete, and the property reinstated to its original condition.
Water Mains Installation & Replacement →
North Waikato
Utility Works was commissioned to install a new power mains cable on a rural North Waikato property. The project involved existing services detection, excavator trenching, and hydro-vac works to keep the trench clear due to in-flow during the project, followed by installation of the three-phase cable and final connect and commission. The project was completed on time and within budget.
Complete Utility Installation →
South Auckland
A large retirement village of 58 units in South Auckland had been experiencing underground water loss. Utility Works conducted system loss testing, system mapping, mark-out and CCTV/sonde pinpointing of joint and tapping band positions, isolation point installation, followed by acoustic and infrared detection works. Once leak positions were located, we implemented strategic excavation and pipe repairs, followed by ground reinstatement and site clean-up. This successful project resulted in the accurate locating and repair of five leak positions, and provided substantial water savings to the client.
Underground Leak Detection & Repair →East Tāmaki, Auckland
A large, 14-hectare industrial property in East Tāmaki was experiencing a high-volume water-loss issue. The busy site was losing in excess of 170 L/min and substantial works had already been undertaken to attempt locating the leak before Utility Works was engaged. We undertook a strategic approach to the investigation including a full site audit and partial mapping of the 180mm mains and isolation testing, followed by IR, GPR, and acoustic works which enabled us to pinpoint the leak, have the position excavated, and the leak repaired overnight.
Underground Leak Detection & Repair →
West Auckland
After suffering long-term issues with water loss, system configuration and location, Utility Works was engaged to find and repair the leaks at a West Auckland campus. The site spanned over 150 acres with extensive buildings and intertwining historic and modern piping networks. The project involved extensive system isolation and configuration testing, GPR and pipe tracing, re-mapping and full leak detection surveying. Once the losses were located, over 14 underground leaks were excavated and repaired. From initial engagement to completion of the first stage of repairs, the campus saw an 83% reduction in minimum night-flow loss.
Underground Leak Detection & Repair →Free, no-obligation quote · Mon–Fri 7am–5pm · Auckland, Franklin & North Waikato