Choosing the best water tank installation in Dunedin comes down to who will size the tank, prepare the base, set it in place and plumb it into your downpipes or pump. Water tank installation in Dunedin covers plastic and concrete tanks for rainwater harvesting, drinking water storage and stock supply, along with the pumps, filters and servicing that keep them working on rural and lifestyle blocks. All Septic & Drainage and Laser Plumbing Dunedin Central both run dedicated tank work alongside their drainage and plumbing trades.
1All Septic & Drainage
All Septic & Drainage supply and install plastic and concrete water tanks for homes and farms across Otago, working from a base at Quarry Road in Mosgiel. Alongside new installations and replacements, the team services and cleans existing tanks and can source pumps, parts and accessories to suit. It suits rural and lifestyle property owners setting up storage on a new build, and homeowners replacing a tank that has reached the end of its life.
Services
- Supply and installation of plastic and concrete water tanks
- Water tank servicing and scheduled maintenance
- Water tank cleaning
- Water tank pumps, parts and accessories sourced to suit the tank
- Septic tank and wastewater system design and installation
Highlights
- Approved installers of Humes Oasis Clearwater and Devan plastic water tanks
- Supplies both plastic and concrete tanks, and advises on which suits the site
- Regular maintenance can be scheduled so servicing is not left to the owner to remember
- Service area runs from Dunedin and Mosgiel out to Brighton, Milton, Balclutha, Lawrence, Port Chalmers and Palmerston
Location & Contact
Name: All Septic & Drainage
Address: 12 Quarry Road, Mosgiel, Dunedin
Phone: 03 668 5768
Website: asdl.co.nz
2Laser Plumbing Dunedin Central
Laser Plumbing Dunedin Central is a plumbing, gasfitting and drainlaying business on King Edward Street that supplies, installs and maintains water tanks, pumps and rainwater harvesting systems for clients across the city. Tanks run from 300 to 30,000 litres, and the team works with its suppliers on retention and detention solutions matched to a given specification. It suits homeowners adding rainwater capture to cut a water bill, and property owners putting in storage as part of a fire safety plan.
Services
- Supply and installation of water tanks from 300 to 30,000 litres
- Rainwater harvesting system installation
- Retention and detention tank solutions matched to specifications
- Water pressure pump selection, installation, replacement and servicing
- Water filtration
Highlights
- Licensed plumbers, with installations set up to New Zealand standards, plumbing regulations and council requirements
- Tank range spans small garden storage through to 30,000 litre capacity
- Totally Dependable service guarantee applied to Laser Plumbing work
- An after hours contact number is published for urgent jobs
Location & Contact
Name: Laser Plumbing Dunedin Central
Address: 369 King Edward Street, Dunedin
Phone: 03 456 3178
Website: laserplumbingdunedincentral.co.nz
3Adams
Adams is a plumbing, drainage, gasfitting and electrical company with its head office at Kenmure in Dunedin and a second office at Cromwell. Installing septic tanks and water tanks sits within its plumbing service, alongside new water supply connections, hot water systems and drainage work, so tank work is generally handled as part of a wider job rather than as a standalone speciality. It suits owners of a new build or a renovation who would rather keep the plumbing, drainage and tank work with one firm.
Services
- Installation of septic tanks and water tanks as part of its plumbing service
- New water supply connections, carried out as an authorised connection installer
- Drainage work covering blocked sewer and stormwater drains
- Hot water system installation, solar, electric or gas
Highlights
- Two offices, head office at Kenmure in Dunedin and a second at Cromwell covering Central Otago
- Named contacts published for quotes, Michael Brown for plumbing and Glen van der Vliet for septic tank work
- Commercial maintenance clients include the University of Otago, Chatsford Rest Home and Birchleigh Rest Home
Location & Contact
Name: Adams
Address: 24 Townleys Road, Kenmure, Dunedin
Phone: 03 477 0077
Website: adamsnz.com
Water Tank Installation in Dunedin at a Glance
| Business | Based in | Highlight |
|---|---|---|
| All Septic & Drainage | Mosgiel | Approved installers of Humes Oasis Clearwater and Devan plastic water... |
| Laser Plumbing Dunedin Central | Dunedin | Licensed plumbers |
| Adams | Kenmure | Two offices |
How to Choose the Right Water Tank Installation in Dunedin
- Check whether the business installs tanks itself or only supplies them. A supplier will drop a tank at the gate; an installer prepares the base, positions it and connects the plumbing.
- Match the tank material to the site. Plastic tanks are lighter and easier to bring in on a tight section, while concrete suits below ground placement and heavy demand.
- Ask who arranges council approval. Consent requirements depend on size, siting and whether the tank is a drinking water supply, and a contractor used to Dunedin City Council will know what applies.
- Look for accreditation with the tank brands you are considering, since approved installers work to the manufacturer’s requirements and the warranty terms that go with them.
- Confirm what happens after installation. Pump sizing, filtration, tank cleaning and scheduled servicing are usually separate from the install and are worth pricing at the same time.
Frequently Asked Questions About Dunedin Water Tank Installation
How much does water tank installation in Dunedin cost?
Local contractors quote each job rather than publishing a fixed price, because the cost depends on the tank size and material, how much site preparation and base work is needed, how far the truck can get in, and whether a pump, filtration or a new connection is part of the job. Ask for the tank, delivery, base preparation and plumbing to be itemised so you can compare quotes properly.
Do I need a building consent for a water tank?
It depends on the size of the tank, where it sits and what the stored water is used for, and the rules also cover any supporting structure and the connection back into the house. Check the current requirements with Dunedin City Council before work starts, and confirm with your installer who is responsible for lodging the application.
What size water tank do I need?
Sizing depends on how many people are on the supply, the roof catchment area feeding the tank, and whether the tank is the main household supply, a garden and stormwater capture, stock water or a backup. Tanks commonly available in Dunedin range from a few hundred litres for garden use up to 30,000 litres for rural and fire supply, and an installer will usually work the figure out from your catchment and usage rather than a rule of thumb.
Should I choose a plastic or a concrete tank?
Plastic, or polyethylene, tanks are lighter, easier to transport and position, and generally cheaper to get onto a site. Concrete tanks are heavier and better suited to below ground installation and high demand use. Site access, ground conditions and whether you want the tank hidden usually decide it, and installers who supply both will advise on the trade off.
How do I check an installer is registered?
Plumbing, gasfitting and drainlaying work in New Zealand is regulated, and connecting a tank into a household supply is plumbing work. You can look up a tradesperson on the public register held by the Plumbers, Gasfitters and Drainlayers Board before you engage them. General guidance on collecting and using rainwater at home is published by Building Performance.
Which parts of Dunedin and Otago do these installers cover?
The businesses on this page work across the city and the surrounding district rather than a single suburb. One operates from Quarry Road in Mosgiel and lists a service area reaching Brighton, Milton, Balclutha, Lawrence, Port Chalmers and Palmerston. Another works from King Edward Street close to the city centre, and a third runs from Kenmure with a second office at Cromwell for Central Otago. If your property is on the Taieri, the coast or a rural block outside the city, say so when you call, because travel and access affect both the quote and the delivery method.
How often should a water tank be cleaned and serviced?
Sediment builds up in the bottom of a tank over time and can affect water quality and the performance of the pump and filters, so regular cleaning is recommended rather than left until there is a problem. Some Dunedin contractors will put you on a scheduled maintenance programme so the service is booked in for you, and it is worth asking about this at the time of installation.
Can an installer replace an existing tank on the same site?
Yes. Replacement is common work, and the process usually covers removing or decommissioning the old tank, checking the base is sound or preparing a new one, positioning the replacement and reconnecting it to the downpipes, pump and household supply. Access is the main variable, so an installer will normally want to look at the site before quoting.
How We Chose the Best Water Tank Installation in Dunedin
Every business in this guide was found by searching for water tank installation in Dunedin, then checked against its own website. Names, addresses and phone numbers are taken from the business’s own site rather than a directory feed, so what you see here is what they publish themselves. We also check that each one is actually based in or genuinely serving Dunedin, rather than a national operator running a local landing page. A business with no website of its own is not listed, because there is no primary source to verify it against.