Plumbing, gas and drainage done right. Done once.
Owner-operated by Michael and Nathan. Master Plumbers backed. We cover Waihi, Waihi Beach, Katikati and the Coromandel approach. From a leaking tap to a full replumb, we show up, sort it, and stand behind the work.
Four trades. One crew. One number to call.
We do the lot in-house. No subcontractors arguing on the driveway, no gaps between jobs.
Plumbing
Leaking taps, new bathrooms and kitchens, full replumbs, maintenance, renovations and new builds.
Read more → 02Gas Fitting
Domestic and commercial gas installation. Hobs, hot water, fires, certified gas work, appliance fixes.
Read more → 03Drainage
Stormwater and wastewater, drain unblocking, effluent fields, new builds, rural and lifestyle blocks.
Read more → 04Commercial
Fit-outs, builders' partnerships, ongoing maintenance contracts, code-compliant installations end to end.
Read more →Three jobs we’re proud of.
Real projects. Real names. Real owners.

Karl’s full house replumb & gas termination.
A whole-of-house replumb that grew arms and legs mid-project. We rolled with the changes, kept the timeline, finished tidy.
“Mike and Nathan helped me with a full replumb. I decided on additions midway through, the lads had no issue with this and were super accommodating.” – Karl S.Read the project →

Lorraine’s pool leak – found and fixed.
A buried pool feed line dropping pressure overnight. We pressure-tested, isolated the run, replaced the section, refilled.
“We had a leak in our swimming pool and it was found and fixed very efficiently.” – Lorraine K.Read the project →

Baker Joinery bathroom fit-out.
A partnership build with Baker Joinery Ltd. Warm timber tones, crisp white finishes, the plumbing roughed and finished to land on cabinetry day-of.
Read the project →Five people. Names, faces, phone numbers.
When you book Waterwise you know who’s turning up.





15 jobs. 5.0 stars. Workmanship, schedule, comms.
“Mike and Nathan helped me with a full replumb. I decided on additions midway through, the lads had no issue with this and were super accommodating.”Karl S. – Full replumb
“We had a leak in our swimming pool and it was found and fixed very efficiently.”Lorraine K. – Pool leak repair
“Very happy with the prompt and affordable work. Highly recommend Waterwise.”Janet D. – Bathroom taps
Tell us what’s leaking.
Quick form below. We respond within one working day, usually the same morning.
Waihi · Waihi Beach · Bowentown · Athenree · Katikati · Karangahake · Paeroa · Whiritoa.
- Yard
- 11 Trig Road South, Waihi
- Phone
- 07 000 0000
- hello@waterwiseplumbing.co.nz
- Hours
- Mon–Fri 7am–5pm. After-hours by arrangement.