Getting the best water tank installation in Auckland is about more than the tank itself, because the base, the pump, the downpipe connections and the filtration all have to work together before a drop reaches your taps. The installers below cover rainwater harvesting for homes, lifestyle blocks and commercial sites, from slimline tanks squeezed down a side path to underground storage, pump and UV fitting, and replacing failed concrete tanks. RainMen and Water Works lead the list.
1RainMen
RainMen is an Auckland rainwater specialist that supplies and installs complete harvesting systems, covering tank supply, plumbing, pumps, filtration and UV disinfection. Owner Micah Johnston starts every job with a free site inspection, then quotes a fixed scope, and the team works around existing landscaping so the tank sits where it makes practical sense. It suits homeowners on tight urban sections as much as larger lifestyle properties.
Services
- Rainwater tank supply and installation across Greater Auckland
- Slimline and hidden tank installation for narrow side paths
- Underground water tank installation
- Pump, filtration, UV and weatherproof housing supply and install
- Concrete tank removal and replacement with plastic systems
Highlights
- Rainwater harvesting is the core trade rather than a side service
- Free site inspection before any commitment, with fixed scope quoting
- Bladder tank options alongside conventional poly and slimline tanks
- Repair and replacement work for tanks that have failed
Location & Contact
Name: RainMen
Address: Auckland
Phone: 022 0960 882
Website: rainmen.co.nz
2Water Works
Water Works is an Auckland plumbing firm running out of a Morningside warehouse, with a dedicated water tank line covering new installs, pump fitting and ongoing maintenance. The team connects domestic tanks straight into household plumbing and builds full rainwater collection systems including gutter connections and flush diverters. It is a practical choice for households that want the same firm to install the tank and keep it serviced afterwards.
Services
- Domestic water tank installation connected to household plumbing
- Rainwater collection systems with gutter connections and flush diverters
- Water tank pump installation and pressure setup
- Storage tank replacement and capacity upgrades
- Tank inspection, cleaning and sediment removal
Highlights
- Certified Master Plumbers
- More than 30 years of trade experience
- One year workmanship guarantee on completed work
- SiteWise Gold certified for health and safety
- On call 24 hours a day, seven days a week
Location & Contact
Name: Water Works
Address: 27 Morningside Drive, Morningside, Auckland 1025
Phone: 09 846 4458
Website: water-works.co.nz
3Hydro-Pro
Hydro-Pro is an Auckland based team of licensed certifying plumbers, gasfitters and drainlayers who install water tanks on homes, farms and commercial premises. Because the same company handles earthworks and civil drainage, site preparation, tank placement and the connection work can be done without bringing in a second contractor. The team covers Auckland, Rodney and Waiheke Island.
Services
- Water tank supply and installation for residential, rural and commercial sites
- Underground detention and retention tank installation
- Downpipe, pipework and pump connection
- Repairs and maintenance on existing tanks
Highlights
- Over 30 years of industry experience
- Licensed registered certifying plumbers, gasfitters and drainlayers under one roof
- Earthworks and civil drainage handled in house for site preparation
Location & Contact
Name: Hydro-Pro
Address: Auckland
Phone: 021 727 800
Website: hydropro.co.nz
4Aqua Works
Aqua Works is a family run water business that has been designing, installing and repairing rain harvesting systems and water tanks since 2000. Based at Warkworth with a showroom on Mill Lane, its service vehicles run south through the Hibiscus Coast to Albany, Dairy Flat, Coatesville, Kumeu and Helensville. It suits rural and lifestyle properties that want the tank, pump, filtration and digger work handled by one team.
Services
- Concrete and plastic water tank supply and installation
- Rainwater harvesting system design and installation
- Water pump supply, installation, repair and servicing
- UV and whole house filtration installation
- Digger hire for tank base and site preparation
Highlights
- Family business operating since 2000
- Full 20 year tank warranty when installed to the manufacturer’s requirements
- All the trades needed for a tank install kept under one roof
- 24 hour emergency call out for pump and water failures
- Five service vehicles covering Albany to Mangawhai, coast to coast
Location & Contact
Name: Aqua Works
Address: 2 Mill Lane, Warkworth 0910
Phone: 09 425 6080
Website: aquaworks.co.nz
5Regency Plumbing
Regency Plumbing is an Auckland plumbing company with bases in Albany and Papakura that sells water tank installation as a packaged job. The package covers the tank, a domestic pump with a colour matched cover, pipework, a copper feed to a mounted hose tap, an electrician for the outdoor power supply, and a downpipe connected to the tank with overflow back to stormwater. Tank sizes run from 1,000 litres up to 25,000 litres.
Services
- Water tank installation from 1,000 to 25,000 litres, fitted with a pump
- Slimline tank installation for narrow spaces beside a house or garage
- Pump supply and installation with a vented pump cover
- Downpipe connection and overflow return to the stormwater outlet
Highlights
- Two Auckland bases, on the North Shore at Albany and in South Auckland at Papakura
- Packaged pricing that includes the electrician for the outdoor power supply
- Choice of Promax corrugated tanks in seven colours or Bailey Slimline tanks
Location & Contact
Name: Regency Plumbing
Address: 32 Elliot Street, Papakura, Auckland
Phone: 0800 758 623
Website: regencyplumbing.co.nz
Water Tank Installation in Auckland at a Glance
| Business | Based in | Highlight |
|---|---|---|
| RainMen | Auckland | Rainwater harvesting is the core trade rather than a side service |
| Water Works | Morningside | Certified Master Plumbers |
| Hydro-Pro | Auckland | Over 30 years of industry experience |
| Aqua Works | Warkworth | Family business operating since 2000 |
| Regency Plumbing | Papakura | Two Auckland bases |
How to Choose the Right Water Tank Installer in Auckland
- Check the installer is a licensed plumber, since connecting a tank to household plumbing involves backflow protection and has to be done by a registered tradesperson.
- Ask whether the quote covers the base, the pump, the pipework, the downpipe connection and the electrical work, or only the tank itself.
- Match the tank size to your roof catchment area, your household size and what you actually plan to use the water for.
- Look at access to the site, because a tight driveway or a sloping section changes both the tank type and the price.
- Confirm who services the system afterwards, especially if you are drinking the water and will need filter and UV lamp changes.
Frequently Asked Questions About Auckland Water Tank Installation
Do I need consent to install a water tank in Auckland?
It depends on the tank and how it is connected. A small tank used for the garden or car washing generally does not need consent, while larger tanks, underground tanks and tanks plumbed into the house can trigger building consent requirements. Auckland Council sets out the rules for domestic rainwater tanks on its rainwater tank guidance pages, and your installer should confirm the position for your specific site.
What size water tank do I need?
Size depends on your roof catchment area, how many people are in the house and whether the tank is topping up an existing mains supply or is your only source of water. A tank for garden watering and car washing might be 1,000 to 3,000 litres, while a rural property relying entirely on rainwater usually needs 25,000 litres or more. Most installers will size it during a free site visit.
How much does water tank installation cost in Auckland?
Cost varies with tank size and material, how far the tank sits from the house, whether a concrete base or excavation is needed, and how much filtration and pumping is included. Site access is a big factor, since a tank that cannot be rolled into place has to be craned. Ask for a fixed scope quote after an on site inspection rather than a phone estimate.
Can I drink rainwater from a tank?
Yes, with the right treatment. Roof collected water needs a first flush diverter, filtration and usually UV disinfection before it is safe to drink, and the tank itself needs cleaning every couple of years. Several of the installers above supply and fit filtration and UV as part of the same job.
Should the tank go above ground or underground?
Above ground tanks are cheaper to install, easier to inspect and simpler to repair. Underground tanks free up the section and keep sight lines clear, but they cost more because of the excavation and they need a pump to lift the water. On a small urban section a slimline tank down the side of the house is often the practical middle ground.
Does the installer have to be a licensed plumber?
Any work connecting a tank to your household water system is restricted plumbing work and must be carried out or supervised by an authorised tradesperson. You can check whether a plumber, gasfitter or drainlayer holds a current licence through the Plumbers, Gasfitters and Drainlayers Board before work starts.
How long does a water tank installation take?
A straightforward above ground tank on a level, accessible site is often a one day job once the tank has been delivered. Anything involving a concrete base, excavation, a crane lift or removing an old concrete tank takes longer, and lead times on the tank itself can add a few weeks.
Can an old concrete tank be replaced with a plastic one?
Yes, and it is a common job in the older parts of Auckland and the rural north. A cracked concrete tank can either be reconditioned or broken out and replaced with a poly tank, and installers such as RainMen handle the removal and replacement together so you are not left without water for long.
How We Chose the Best Water Tank Installation in Auckland
Every business in this guide was found by searching for water tank installation in Auckland, 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 Auckland, 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.