Outright Plumbing installs rainwater tanks with same-day service and transparent fixed pricing. With 25+ years’ experience and 800+ five-star reviews, we make saving water simple and seamless.

Hot summers, rising water bills, and council restrictions all make a rainwater tank more than just a “green” choice — it’s a practical one. But getting it right isn’t as simple as dropping a tank in the backyard. From sizing to placement to plumbing connections, there’s a lot that can go wrong if it’s not done properly. That’s where Outright Plumbing comes in.

Here’s a snapshot of the feedback we’re proud to receive every week.
When it comes to something as important as your home’s water, you want a plumber you can rely on. Here’s why so many Melbourne locals call us first.
Every suburb has its quirks. From heritage homes to new estates, we know how to navigate council requirements and make sure your tank setup is approved.
If something we’ve installed fails, we’ll come back and fix it at no extra charge. That’s our quality guarantee, and it’s how we back the work we do.
We’ll tell you what you need, what you don’t, and the best way to get the job done. Hundreds of 5-star reviews show locals value our honesty.
Our Outright Club membership gives you perks like discounts and priority bookings. It’s handy for homeowners who want a plumber they can call on anytime.
We’ve installed tanks all over Melbourne, from small courtyard setups to multi-thousand-litre underground systems. Along the way, we’ve seen what works beautifully and what causes years of headaches. Here’s what most homeowners don’t realise until they’ve spoken with a licensed plumber.
A 2,000-litre tank looks impressive, but if your roof catchment only collects 1,000 litres in an average downpour, it’ll never fill properly. We calculate capacity based on your roof area and local rainfall. For example, a 100 m² roof can collect around 1,000 litres from just 10 mm of rain. That means oversized tanks aren’t always practical, while undersized ones run dry too quickly. Getting this balance right is the difference between a useful system and wasted money.
A tank is only as good as its overflow. If it’s not plumbed correctly, heavy rain can dump thousands of litres against your house foundations. We’ve seen paving sink and garden beds wash away because overflow was left to spill onto the ground. Foundations matter too: a full 5,000-litre tank weighs five tonnes. Without a reinforced slab or proper base, tanks can shift, crack, or topple.
A tank without a pump is fine for a watering can, but useless for toilets, washing machines, or irrigation systems. Pumps need to be sized to the job: a small garden pump won’t keep pressure steady for a house supply. Filters are equally important. Without a leaf diverter and a first-flush system, debris ends up in the tank, clogs the pump, and can even lead to mosquito infestations. We’ve replaced plenty of pumps destroyed by unfiltered water. Even a cheap filter would have saved them.
Victorian plumbing regulations require tanks connected to toilets, washing machines, or hot water to have backflow prevention devices. Councils also require overflow to connect into stormwater drains. We’ve been called out to fix tanks installed by handymen or DIYers that didn’t meet these rules. In some cases, homeowners were fined or had to rip out non-compliant work. A licensed plumber ensures your tank system passes inspection the first time.
Tanks don’t look like they need much upkeep, but ignoring maintenance leads to failure. Filters clog, pumps seize, and sediments build up inside tanks over time. We recommend a simple annual check: clean filters, test the pump, and inspect the overflow. It’s a small job that keeps the whole system running for decades instead of years.
Every tank setup is different, but the process has a few steps we always cover. It’s the detail that makes the system reliable for years to come.
We check the ground where your tank sits, confirm the base is stable, and set up access points so future maintenance is straightforward.
We connect the inlet from your roof plumbing, run outlets to toilets, laundry or garden taps, and make sure the overflow pipe drains safely away from your house.
Before handover, we pressure test the pipes, check joints for leaks, and flush the system to be certain your tank delivers consistent flow.
A rainwater tank isn’t something you want half-done. Book us now for expert rainwater tank installation in Melbourne and know it’ll be working properly from day one.
Outright Plumbing provides not just installations, but also reports and compliance documentation, giving managers confidence that their systems are safe, legal, and built to last. We work with managers and developers to design and install systems that tick all the boxes.

Here’s a collection of our work across Melbourne, from small fixes to big installs, so you can see the quality and care that goes into every job.





Based in the heart of Bayside, we can get to you quickly when you need us most. Our team knows the area, the local homes, and the plumbing challenges common in this part of Melbourne, and we use that knowledge to solve problems efficiently.
From emergency callouts to scheduled maintenance, you can expect the same care, expertise, and attention to detail on every job. Count on us for prompt, professional service backed by genuine local knowledge.
We’re a family-run crew of plumbers. Here are the friendly, familiar faces your neighbours already know.
We started as a two-person team operating out of our parents’ garage and now we’ve got a squadron of experts zooming around Bayside. We’d say that’s pretty solid proof of the quality of our work. Come meet the plumbers Melbourne trusts so much.
Our FAQs aren’t copy-paste guides. They’re checked by our plumbers, so you get real advice you can trust.
Most rainwater tank installations in Melbourne fall somewhere between $1,000 and $5,000, depending on the size of the tank and how complex the plumbing work is. It’s only a ballpark figure, but it gives you an idea of what to budget for.
Some of the main factors that affect cost include:
Because no two homes are the same, the best way to pin down costs is with a tailored quote. Outright Plumbing specialises in the installation of rainwater tanks Melbourne homeowners can rely on, giving you upfront pricing and workmanship that lasts.
In many cases, smaller tanks used for garden watering don’t need approval. But once you start connecting a rainwater tank to flushing toilets, laundry, or your main water supply, the job needs to meet Victorian plumbing regulations. That means you’ll need a licensed installer to make sure the tank is installed safely and legally.
The Victorian plumbing industry sets the rules for how tanks can be connected, especially when it comes to cross-connection with mains water. These rules are designed to ensure safe drinking water and protect public health.
Outright Plumbing is fully licensed and insured, so we can take care of the entire process, from inspection and recommendation through to installation and compliance paperwork. With decades of experience, we give Melbourne homeowners peace of mind that their system is sustainable, safe, and approved.
Yes, we can. Most rainwater tanks rely on roof plumbing to collect water, so the setup has to be done correctly. We look at your gutters, downpipes, and stormwater layout to make sure the tank is getting clean, reliable supply.
When we connect a rainwater tank to the roof plumbing, we usually:
If your system needs upgrades to work properly, our roof plumbing team can handle it at the same time. Outright Plumbing has the expertise to ensure the tank is installed properly and continues to deliver water efficiently around your home.
Yes, every rainwater tank needs some maintenance to keep the water clean and the system working. If you ignore it, you risk blockages, pump problems, or even contamination in the tank.
Typical maintenance tasks include:
For most homes, a basic check every 6 to 12 months is enough. Some homeowners prefer to book plumbing maintenance so a professional can handle it. Outright Plumbing offers thorough inspections that assure your tank stays efficient and continues to save you money on water bills.
An overflow is normal, but it has to be directed safely away from your home. If it is not, the extra water can pool around foundations or flood garden beds. A properly installed tank will include an overflow pipe that directs water into your stormwater system or to a safe drainage point.
If you notice water spilling straight onto the ground, it usually means the overflow connection is blocked or wasn’t fitted correctly in the first place. Outright Plumbing can check the system, clear the outlet, or rework the setup so your tank handles Melbourne’s heaviest downpours without creating a problem. For persistent overflow issues, we also handle blocked stormwater drains, which are often the hidden cause.
Absolutely. Many Melbourne homes still have older tanks that are rusting, leaking, or simply too small for modern needs. In most cases, we can replace the tank without needing to redo all the pipework, which keeps costs down.
Upgrades often involve: replacing an old steel tank with a modern slimline unit, fitting a larger tank for better water storage, or adding a pump so the system can service more parts of the house. Some homeowners also choose to connect new tanks to existing gutter systems so they can collect more water.
Outright Plumbing provides straightforward advice and recommendations so you know whether repair, replacement, or a full upgrade is the right call for your tank. We specialise in tank installation needs across Melbourne and make sure the new setup works efficiently and reliably.
Yes, we do. Older homes often need extra care when it comes to water tank installation. The roof plumbing may not have been updated in decades, the gutters may need repairs, and the space around the house can be limited.
We take a mindful approach: inspecting the current system, checking the structure, and working within heritage guidelines where they apply. In many cases, slimline or discreet tanks can be used so the installation suits the style of the home.
Outright Plumbing has worked on heritage properties across Melbourne’s southern suburbs, and we understand the balance between keeping the home’s character intact and making sure the tank is installed correctly.
Every tank we install comes with a manufacturer’s warranty, which usually covers the tank itself for a set period of years. On top of that, Outright Plumbing provides our own workmanship guarantee on all of our plumbing services. If there’s a problem with the way the tank is installed, we’ll come back and fix it at no cost to you.
This double layer of protection assures homeowners that their investment is safe. You’re covered by the warranty on the tank and by our promise to stand behind our work. That’s part of why Outright Plumbing comes so highly recommended by homeowners and renters across Melbourne’s southern suburbs.
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