Water Tank & Retention Tank Supply & Installation
Your Trusted Experts for Water Tank Installation in Wellington
At PlumbSpec, we’re all about helping you do your part for the planet with rain water harvesting. Installing a water tank means you can collect and store rainwater to use around your home, like watering the garden, washing your car, or even cleaning your house during dry seasons. This reduces the amount of water you take from the mains, helping you lower your carbon footprint. Our team of expert plumbers can install water tanks that fit your home and needs, making it easy for you to save water and be more eco-friendly!
We are the experts in everything when it comes to Water Tanks Wellington wide trusts for reliable and efficient installation services. Whether you’re looking to install a tank for regular use or as a backup in emergencies, our team is here to ensure your Water tank installation is handled with the utmost care. We understand that having a consistent water supply is vital, and our goal is to provide you with Water storage tanks Wellington can depend on.
Reliable Water Storage Solutions
When it comes to Water storage tanks in Wellington, PlumbSpec offers a range of options tailored to your specific needs. Whether you’re outfitting a residential property or a commercial space, our Water tank installation services are designed to give you peace of mind. We’ll help you choose the right size and type of Water tanks to ensure you always have a steady supply of water on hand. Our installations are quick and professional, ensuring your tanks are ready to serve you efficiently.
Emergency Water Tanks for Peace of Mind
In emergency situations, having access to Emergency water tanks Wellington residents can rely on is crucial. PlumbSpec specialises in installing emergency water tanks that are both durable and dependable. We know that emergencies can happen at any time, so our Water tank installation services are designed to provide you with a ready source of water when you need it most. We install emergency water tanks Wellington wide that are built to last, ensuring your water supply never runs low.
Whether you need new Water Tanks for everyday use, or upgrading your existing Water storage tanks for long-term needs, or Emergency water tanks for those unexpected moments, PlumbSpec is here to help. Contact us today to learn more about our comprehensive Water tank installation services in Wellington.
Plumbspec provides reliable retention tank supply and installation across Wellington, helping homeowners manage stormwater, store rainwater and stay prepared for emergencies.


Rain Water Storage and Stormwater Solutions in Wellington
Managing heavy rain and runoff is a big part of protecting Wellington homes, especially with the wild weather we experience each year. That’s why Plumbspec supplies and installs high-quality retention tanks designed to control excess water before it becomes a problem. A well-planned stormwater retention tank helps reduce flooding, limits erosion around your property and supports better overall water management. Many homeowners also choose a rainwater harvesting tank or other forms of retention tank to make the most of Wellington’s frequent rain, using collected water for gardens, outdoor cleaning and general conservation. With the right setup, your retention and stormwater retention tanks work together to keep your property safe, efficient and environmentally responsible.
Being prepared for emergencies is just as important as managing day-to-day stormwater. A dedicated rainwater harvesting tank gives you a dependable backup supply when normal water services are disrupted. Your retention tanks store clean rainwater from your roof, offering peace of mind during earthquakes, storms or major outages. Many Wellington households now see a stormwater retention tank as essential – not only for protecting their home, but for ensuring they have water available when it matters most. With Plumbspec’s expert retention tank installation services, your system is ready for both everyday use and unexpected events.
Our Recommended Retention Tanks
Choosing the best retention tank or water tank for your property can be challenging but the Plumbspec team works with clients to assess the site and find the perfect water tank for your needs.

A simple stand-alone water tank such as The Tank Guy is an economical option with sizes ranging from 600L to 4000L. The most common size we install is the 800L Slimline tank as pictured, with prices starting from around $700 plus delivery and installation.

If you are looking for a modern retention tank design, we recommend the corrugated iron look from Tanksalot. These are a slim but sturdy design that don’t require a lot of bracing and come in a range of colours and sizes. Prices start from $1600 plus delivery and installation, for a 650L tank as pictured.

The Thin Tank is a versatile option coming in many different colours and sizes, while being slim enough to fit into almost any space discreetly. A common size we install is the 500L water tank with brackets, and prices start from $1900 plus delivery and installation.
What To Consider When Choosing Your Rainwater Retention Tank
Property Size
Retention water tanks come in a large range of sizes from 200L up to 5000L or more, so consider how many people the retention tank will need to service in your household or business.
Location & Site
You will need a level piece of ground to install a retention tank, which is sometimes hard on Wellington’s terrain! That’s why Plumbspec can offer a wide variety of water tank shapes to fit your site and we offer full site preparation and installation to make it easy for our clients.
Aesthetics
It is important your rainwater retention tank looks good once installed, so Plumbspec offers a wide range of modern and neutral colours to blend in with your home or fence colour. Rainwater tanks are available in uv-stabilised polyethylene or corrugated steel, and can even be fitted with planter boxes.
Stormwater System
If drainage of your property is currently an issue, you may need to consider an in-ground detention tank. From site preparation and excavation to connecting your tank to the existing stormwater system, Plumbspec’s team works diligently to provide a smooth and stress-free experience.
Why Choose Plumbspec for Retention Tank Supply & Installation in Wellington?
Plumbspec has established a reputation for excellence in retention tank supply and installation. Our commitment to customer satisfaction and industry-leading expertise sets us apart from the competition. Here are a few reasons to choose Plumbspec for your retention tank needs:
Expertise
Our team of trained professionals has the experience and knowledge to handle complex retention tank projects.
Quality Products
We source our retention tanks from reputable manufacturers, ensuring that you receive a durable and efficient solution for your property.
Custom Solutions
We work closely with clients to determine the appropriate retention tank size and type for each project, taking into account factors such as property size, location, and climate conditions in Wellington.
Comprehensive Service
From supply to installation, Plumbspec offers a complete solution for your retention tank needs.
Customer Satisfaction
Our dedication to customer satisfaction has made us the go-to plumber in Wellington for retention tank supply and installation.
Frequently Asked Questions
How much does it cost to install a water tank in Wellington?
The cost of water tank installation depends on the tank size, site access, and system setup. Smaller rainwater tanks for gardens can be very affordable, while larger systems with pumps and filtration will cost more. At Plumbspec, we provide clear, upfront quotes for every project, from water tank supply and installation, to any plumbing work that may also be required. You’ll know exactly what to expect before any work begins.
What types of water tanks do you supply and install?
As a trusted water tank supplier for Wellington residents, we provide a full range of options including above-ground, below-ground, slimline, and emergency water tanks. Whether you need a small tank for rainwater collection or a large household system, our certified installers can supply and install the right setup for your property and water use. We also have a range of Retention and Detention tanks available.
Do you install emergency water tanks?
Yes, we install emergency water tanks to help households and businesses stay prepared during water shortages or emergencies. These tanks provide safe, stored water for essential use during power cuts, earthquakes, or council supply issues. We’ll help you choose the right size and location to ensure you’re always ready.
Can you supply and install rainwater tanks for homes and businesses?
Absolutely. We supply and install rainwater tanks for both residential and commercial properties across Wellington. Our team designs systems that connect seamlessly to your roof and gutters, ensuring efficient rainwater collection and storage. We also install pumps, water filtration systems, and plumbing connections for a complete setup.
Do you service all areas in Wellington?
Yes, our team installs water tanks Wellington wide, covering Porirua, Kapiti, Hutt Valley, and all Wellington City suburbs. With over 40 years in the region, we understand local conditions and council requirements, making the process smooth from planning to installation.
What are the benefits of installing a rainwater tank?
A rainwater tank helps you save on water bills, reduce your environmental impact, and stay prepared during supply restrictions. Stored rainwater can be used for gardens, laundry, toilets, or even household supply with proper filtration. It’s one of the easiest ways to make your home more sustainable while adding value to your property.
Do you provide maintenance for water tanks?
Yes. We offer ongoing maintenance for all systems we install. Our plumbers can check filters, pumps, and fittings to ensure everything runs smoothly. Regular water tank servicing helps extend the life of your tank and keeps your water clean and safe to use all year round.
How long does a water tank installation take?
Most water tank installations can be completed within a day, depending on the size and site requirements. Larger or underground systems may take a little longer. Once we’ve inspected your site, we’ll give you a clear timeframe so you’ll know exactly what to expect.
Are your installers certified?
Yes, all Plumbspec installers are certifying plumbers and experienced in the installation of water tanks. As Master Plumbers, we ensure every installation meets strict NZ standards for safety, compliance, and workmanship. You can trust that your tank will be installed properly the first time.
How do I book a water tank installation with Plumbspec?
Booking is simple. You can call our friendly team on 0800 232 650 or contact us through our website. We’ll arrange a time to inspect your site, recommend the right tank, and provide a detailed quote. From supply to installation, we make the whole process easy and stress-free.