Local Authority Water & Waste Water Network Specialists

One Electrical is a Hamilton based company predominantly servicing the greater Waikato region, but also completing projects all over the North Island.

We are Industrial specialists with a large focus of business on Local Authority Water and Waste Water networks.

Service Excellence & Integrity

We offer a strict policy of service excellence, honesty and integrity. Each client’s specific needs are met both during the preparation and execution of each project to ensure the clients full satisfaction. 

One Electrical continually strives to improve all aspects of business in order to provide clients with the highest possible standard of service.

Complete Range of Electrical Services

We offer a complete range of electrical services, from electrical design, engineering, programming, automation, CAD drawings, installation, commissioning and servicing. 

We work with our customers to offer the best electrical solution to fit their budget and application.

Industrial Specialists Providing comprehensive solutions

As industrial specialists we offer a complete electrical package and comprehensive solutions for any industrial project. From designing, programming, building and installing control panels down to complete hand over documentation, we cover everything that our industrial clients may require.

Some of our projects

Hamilton City Council

Hamilton City Council Reservoirs are all unmanned plants, except for the Waters Operations Team undertaking physical sampling and plant checks. More >>

Rototuna Reservoir

One Electrical was awarded the Electrical and Automation Systems contract with Downer Construction for the construction of a new Water Reservoir in Rototuna, Hamilton. More >>

GT Civil Hamilton South Reservoir

One Electrical were awarded the contract with GT Civil to complete the Electrical and Control systems associated with the new Hamilton South Reservoir Dedicated Supply Pipeline. More >>

Dinsdale Reservoir

One Electrical were engaged by the Hamilton City Council to relocate the existing Electrical and Control Systems to a newly built electrical room at the Dinsdale Water Reservoir, Hamilton. More >>

Waikato District Council

We have been awarded the electrical sub-contract by Spartan to install an automatic wash system to new Sewer Overflow Storage Tanks for two Waikato District Council Sewage Pump Station sites. More >>

Ruakiwi Reservoir

The Ruakiwi Reservoir, an iconic tower standing tall above the Hamilton Lake was in dire need of an upgrade and relocation. More >>



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