Everything we do with underground water

Locating · installation · repair — one crew

Since 2015Own locators, hydro-vac & diggersAuckland · Franklin · North Waikato

By utility

Water, underground

Water is most of what we do: finding leaks nobody can see, fixing them, surveying whole private networks, and installing or replacing the mains that bring supply from the street — or from a bore or tank — to the building.

One crew carries it end to end. The people who pinpoint the leak bring the hydro-vac and the digger, make the repair and put the ground back.

Other utilities:Power Gas Comms

Services that touch water

Need something done with underground water? Tell us the job — we’ll tell you straight.

Free, no-obligation quote · Mon–Fri 7am–5pm · Auckland, Franklin & North Waikato

Call us0800 779 588 Get a free quote

Google reviews

What customers say

5.0 on Google →

“Prompt service & fair pricing. Tony and his team — sharp eye for detail and out of the box problem solving paired with a high standard of workmanship.”
Richard La Trobe · Google · October 2026
“Really happy with the work to install our underground services. Highly recommend.”
Sarah Walworth · Google · October 2026
“The only company we trust… reliable, cost effective, and honest service from A to Z. 100% confidence in this company.”
Darrel Assink · Google · September 2026

Water work

Our Projects

1–2 of 4

South Auckland

Retirement Village Water Leak Detection & Repair

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.

Read the case study

South Auckland

Auckland Residential Water Mains Replacement

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.

Read the case study

Worth a read first

Guides & advice

1–3 of 4

How to Find an Underground Water Leak in NZ: Signs, the Meter Test and Who to Call

Most underground water leaks start small and stay out of sight. By the time water shows at the surface it may have been running for weeks, and every litre has gone through your meter. This guide covers the signs we see most often across Auckland, Franklin and the Waikato, how to run the meter test that confirms a leak, how to work out which side of the meter it is on, and who to call for each situation.

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Who Owns the Pipe From the Street to Your House? Point of Supply, Responsibility and Leak Remissions in NZ

When water starts pooling in the berm or the bill doubles, the first question is who has to fix it. The answer depends on which side of the point of supply the problem sits, and that line is drawn in a slightly different place on urban, rural, cross-lease and unit-title properties. This guide explains where it is, what the water supplier will and will not do, how shared pipes and tenancies work, and how to claim back some of the water a leak cost you.

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Water Main Replacement Cost in NZ: Repair, Renewal or Replace?

When a water main or lateral starts leaking, the first instinct is to patch it. Sometimes that is right. Often it is the first of several patches that together cost more than a new pipe would have. This guide sets out what repair, renewal and replacement each involve, what decides the cost of each in New Zealand, how to tell which one your pipe needs, and the pipe materials around Auckland and the Waikato that are past their time, with examples from our own jobs.

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Water — FAQ'S

Who’s responsible for the pipe from the street to my house?

In most NZ supply areas the public main and the meter or toby at the boundary belong to the water supplier, and the private lateral from there to the house is the owner’s. Check with your supplier — and if the leak is on your side, we find and fix it.

Can you find a leak without digging up the driveway?

Almost always. Acoustic correlators and ground microphones locate the leak from the surface, so we open the ground only where it actually is — one small hole rather than a trench.

Do you work with bores and tanks as well as town supply?

Yes. Properties off the mains get the same treatment: main laid from the bore or tank, pump connected, pressure balanced and the run mapped.

Ready when you are.

Tell us what you’re seeing or what you’re planning. You’ll get a straight answer, a free quote and one crew that does the whole job.

Call us0800 779 588 Email usinfo@utilityworks.co.nz Get a free quote

Mon–Fri 7am–5pm · Waiau Pa, South Auckland · Auckland, Franklin & North Waikato