Finding the best water tank installation in Wellington starts with a plumber who can size the tank, prepare a level base and connect it to the downpipe properly. Water tank installation in Wellington covers everything from a 200 litre emergency barrel beside a Te Aro townhouse to a large rural system with pumps and filtration, and the businesses below do that work across the capital and the Hutt Valley. PlumbSpec and Southern Plumbing both run dedicated tank service lines, while Moonshine Hydrojet brings its own excavation gear to rural sites.
1PlumbSpec
PlumbSpec is a third generation Wellington plumbing, gasfitting and drainlaying company based in Kenepuru, known for more than 40 years as Crofton Plumbing Ltd before the change of name. Water tank supply and installation is one of its named service lines, sitting alongside retention and detention tanks and its own pipework design service. It suits homeowners adding rainwater storage as much as builders who need a retention or detention tank designed into a new site.
Services
- Water tank supply and installation
- Retention tank supply and installation
- Detention tank supply and installation for stormwater
- Water filtration system installation
- Drainage and stormwater systems
Highlights
- Third generation family company, trading in Wellington for over 40 years under the former name Crofton Plumbing Ltd
- Registered installer of Puretec water filtration products
- Certified plumbers and gasfitters and registered drainlayers
- PipeSpec pipework design and specification service for new builds
Location & Contact
Name: PlumbSpec
Address: Kenepuru, Wellington
Phone: 04 471 0186
Website: plumbspec.co.nz
2Southern Plumbing
Southern Plumbing works out of Te Aro and describes itself as a team of certified Master Plumbers with more than 40 years serving the Wellington region. Its water tank work runs from 200 litre emergency rain butts through to 30,000 litre domestic tanks, including multi-tank runs joined together where a section is tight. The team also fits pumps so stored rainwater can be used on the garden, in the toilet cistern or in the washing machine.
Services
- Emergency water storage tank supply and installation
- Rainwater harvesting system installation
- Water tank maintenance, cleaning and component checks
- Water tank repair and replacement, including removal of the old tank
- Pump and water filtration fitting for tank supply
Highlights
- Certified Master Plumbers with more than 40 years working across the Wellington region
- Tanks from 200 litres up to 30,000 litres, with multi-tank configurations for narrow sites
- On time guarantee: the job is free if the team does not arrive when it said it would
Location & Contact
Name: Southern Plumbing
Address: 19 Arthur Street, Unit 1, Te Aro, Wellington 6011
Phone: 0800 484 353
Website: southernplumbing.co.nz
3Moonshine Hydrojet & Plumbing Ltd
Moonshine Hydrojet and Plumbing is an Upper Hutt plumbing and drainlaying business run by owner operator Gavin Pearce. It installs both plastic and concrete water tanks for rural and residential properties and owns the excavators used to prepare and bed them, so the digging and the plumbing are handled by one team. Lifestyle block owners on tank supply are the natural fit, particularly where a pump or a septic system is going in at the same time.
Services
- Plastic and concrete water tank installation
- Septic and wastewater system installation
- Pump supply, replacement and diagnostics
- Excavation, drainlaying and soak pits
Highlights
- Devan recommended installer for water tanks and septic systems in Wellington
- Owner operator Gavin Pearce is a certifying plumber, certifying drainlayer and tradesman gasfitter
- Runs both small and large excavators, so tight residential sites and big rural jobs are both covered
- Full range of Wallace pumps held in stock for rural water supply
- Hydrojetting and CCTV drain diagnosis carried out in house
Location & Contact
Name: Moonshine Hydrojet & Plumbing Ltd
Address: Upper Hutt, Wellington
Phone: 04 526 2439
Website: moonshinehydrojetandplumbing.com
4Central Plumbing Wellington
Central Plumbing is a Karori based plumbing and drainlaying company that runs its own excavation and demolition machinery. Its rainwater harvesting service is quoted as a complete job: the tank, the fittings, leaf and first flush diverters, the pump and a concrete pad where the site needs one. The team is plain about its limits too, noting on its own site that it does not do gasfitting.
Services
- Rainwater harvesting system supply and installation
- Leaf diverter and first flush diverter fitting
- Pump installation for indoor tank water use
- Concrete pad preparation, excavation and drainlaying
Highlights
- Written fixed price quote covering the tank, fittings, pump, pad and labour
- Owns its own heavy machinery for excavation, demolition and drainlaying
- Round the clock callout service with after hours charges stated up front
Location & Contact
Name: Central Plumbing Wellington
Address: 21B South Karori Road, Karori, Wellington 6012
Phone: 022 638 5704
Website: centralplumbing.co.nz
5Laser Plumbing Wellington East
Laser Plumbing Wellington East operates from Alicetown in Lower Hutt and started out in 1994 as SBW Plumbing Services Ltd. It installs rainwater tanks for homeowners across Wellington, Lower Hutt, Upper Hutt and the Kapiti Coast, taking care of the diverter and downpipe connection and handling more involved configurations where they are needed. It is a sensible choice if you would rather the tank went in with the same firm that looks after the rest of your plumbing, gas and drainage.
Services
- Rainwater tank installation and downpipe diversion
- General plumbing, gasfitting and drainlaying
- Drain unblocking and Nuflow trenchless pipe repair
- Underfloor heating and radiator heating installation
Highlights
- Trading in Wellington since 1994, originally as SBW Plumbing Services Ltd
- Joined the national Laser Plumbing group in 2011, then merged with Miramar based Network Plumbing Ltd in 2014
- Totally Dependable guarantee applied across Wellington, Lower Hutt, Upper Hutt and Porirua
- Certified plumbers, gasfitters and drainlayers on the team
Location & Contact
Name: Laser Plumbing Wellington East
Address: 4A Wakefield Street, Alicetown, Wellington 5010
Phone: 04 569 2396
Website: laserplumbingwellingtoneast.co.nz
Water Tank Installation in Wellington at a Glance
| Business | Based in | Highlight |
|---|---|---|
| PlumbSpec | Wellington | Third generation family company |
| Southern Plumbing | Unit 1 | Certified Master Plumbers with more than 40 years working across the... |
| Moonshine Hydrojet & Plumbing Ltd | Wellington | Devan recommended installer for water tanks and septic systems in Wel... |
| Central Plumbing Wellington | Karori | Written fixed price quote covering the tank |
| Laser Plumbing Wellington East | Alicetown | Trading in Wellington since 1994 |
How to Choose the Right Water Tank Installer in Wellington
- Check the installer is a registered plumber or drainlayer, and ask who will actually be on site rather than who answers the phone.
- Ask whether the quote is a fixed price for the whole job, including the tank, the leaf and first flush diverters, the pump, the base and the labour, or a price for the tank alone.
- Match the trade to the site: a hillside section in Karori or Kelburn may need excavation and a retaining base, which favours a firm with its own digger.
- Decide up front whether the water is for the garden only or will be plumbed inside, because indoor use means a pump, backflow protection and usually building consent.
- Ask what happens after installation, including tank cleaning, filter changes and who to call if the pump fails.
Frequently Asked Questions About Wellington Water Tanks
What does water tank installation in Wellington involve?
A standard job is a level, load bearing base within reach of a downpipe, a diverter fitted to that downpipe, the tank set and restrained, and an outlet tap or pump connection. A simple garden tank beside an existing downpipe can go in inside a day. Bigger jobs with excavation, a concrete pad, buried pipework, a pump and filtration take longer, and rural systems longer again.
How much does a water tank cost to install?
Cost is driven by the size of the tank, how far it sits from the downpipe, whether the site needs a pad or excavation, and whether a pump and filters go in. A small emergency tank next to an existing downpipe sits at the cheap end and a large rural system with pumping and treatment is a different order of job. Ask for a written quote that names the tank, the fittings, the diverters, the pump and the base so you are comparing like with like.
Do I need building consent for a rainwater tank?
A tank collecting water for the garden or for outdoor washing generally does not need consent, while plumbing tank water into the house for toilets, laundry or drinking brings in a pump, backflow protection and usually a building consent. Rules vary by council and by how the system is connected, so confirm with your local council before work starts. The Ministry of Business, Innovation and Employment sets out when building work needs consent at building.govt.nz.
How much water should I store for an emergency?
The Wellington Region Emergency Management Office recommends 20 litres of water per person per day for seven days, which is 140 litres per person, because after a major earthquake it could take more than a week to set up official drinking water stations. Households with young children, unwell family members or pets should store more. The full guidance, including the subsidised tanks sold through the councils, is at wremo.nz.
How do I check an installer is registered?
Plumbers, gasfitters and drainlayers in New Zealand are licensed by the Plumbers, Gasfitters and Drainlayers Board, and you can look up an individual tradesperson on the public register at pgdb.co.nz. Ask for the name of the person doing the work, not just the company, since it is the individual who holds the licence. A certifying plumber or certifying drainlayer can sign off their own work.
Can I drink the water from a rainwater tank?
Roof collected water needs treatment before anyone drinks it. A leaf diverter keeps debris out of the tank and a first flush diverter sends the dirtiest run off from the start of a downpour to waste, which improves what goes in. For drinking, that is usually followed by cartridge filtration and often ultraviolet treatment, and in an emergency boiling or a small measured dose of plain household bleach is the fallback.
Which parts of the Wellington region do installers cover?
Most water tank installers based in the city work across Wellington, Porirua and the Hutt Valley, and several also cover the Kapiti Coast and the Wairarapa. Access matters more than distance here: a flat central site around Te Aro or Newtown is straightforward for a delivery truck, while a steep Karori or Khandallah section can need a smaller tank, a crane lift or a hand built base. When you call, describe the slope, the driveway width and the distance from the downpipe, because that is what decides the price and the timing.
Will a water tank fit a small Wellington section?
Yes. Slimline tanks are made narrow and tall to sit against a wall or fence line, and modular tanks can be linked together so a run of smaller units gives the same storage as one large one. Where there is genuinely no ground space, a 200 litre emergency tank next to a downpipe still covers a household for several days of basic drinking and washing water.
How We Chose the Best Water Tank Installation in Wellington
Every business in this guide was found by searching for water tank installation in Wellington, 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 Wellington, 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.