• map
    Warehouse : 4 Norfolk Court, Coburg North, Victoria 3058
Head Logo
Suppliers Banner
Bladder Tanks
Winner Badge Finalist Badge Blue Finalist Badge

Bladder Systems by Eco Sac®


A bladder system is a highly durable PVC tank (“bladder”) system that is compact enough to fit underneath your decking. Available in 66 sizes, there are a huge number of configurations from 1,700 litres all the way up to 8,600 litres. Melbourne homeowners can benefit from a 10-year warranty.

Why Bladder Tanks for Rainwater Collection?

Offering flexibility like no other, the Eco Sac rainwater bladder tank range here at PJT Green Plumbing is perfect for those looking for a highly durable system that can be discreetly stored underneath your home or commercial building.

The Eco Sac rainwater bladder tank is specifically used to store water and rainwater. We would highly recommend purchasing one of our bladder tanks if you’re looking for a water storage system that won’t get in the way!

Installation Process

The water bladder tank is housed inside a steel frame, supported by geo-tech fabric and doesn’t need to be supported by a concrete slab base.

We begin by measuring the size of the space you’d like to place your water tank. Essentially your only restriction on the tank you pick is the amount of space you have to store it. Once we’ve determined the best option, we will order the product.

Once it arrives, we can begin the install. Depending on how your deck (or the location you’d like to place your tank) is constructed, we may need to bring in carpenters to dismantle certain sections, or lift off planks to insert the frame and bladder.

Once the tank is placed, we will connect all of the plumbing and run the system to ensure it is all functioning correctly. Finally, we will explain how to correctly maintain your new tank and answer any questions you may have.

How to Choose Perfect Size For Your Bladder Tank

As with all rainwater tanks, there are a number of considerations to make when choosing a size. These include:

  • Your water usage and needs 
  • Average rainfall in your locale 
  • Your roof size and area
  • Any space and location restrictions  

With bladder tanks, it is especially important to consider the size of the area you’d like to put it in. We offer a smaller maximum size than other rainwater tanks as we recognise that the space you’re putting it in is usually quite restricted. To get help with the exact calculations, call PTJ Green Plumbing today.

To arrange a quote or find out more information on our Eco Sac rainwater bladder tank range, please get in touch with PJT Green Plumbing on 1300 731 578 or online now!

Bladder Tank

Frequently Asked Questions

Do Eco Sac bladder systems come with a warranty?

Yes, Melbourne homeowners can benefit from a 10-year warranty on their Eco Sac bladder systems.

Do I need a concrete slab base for my bladder system?

No, the water bladder tank is housed inside a steel frame and supported by geo-tech fabric, so it does not require a concrete slab base.

How do I choose the perfect size for my Eco Sac bladder system?

Consider factors such as your water usage and needs, average rainfall in your area, your roof size and area, and any space and location restrictions. You can also call PTJ Green Plumbing for help with exact calculations

Can Eco Sac bladder systems be installed under commercial buildings?

Yes, Eco Sac bladder systems are suitable for installation underneath both residential and commercial buildings.

How do I know if my deck can accommodate an Eco Sac bladder system?

The team at PTJ Green Plumbing will assess your deck and determine if any modifications are necessary prior to the installation process.

Where is PJT Green Plumbing located?

Our company is conveniently located at 4 Norfolk Crt Coburg Nth, Melbourne. We service all of Melbourne with our knowledgeable staff.

What is green plumbing?

Green plumbing consists of environmentally friendly and sustainable plumbing solutions that help save water and reduce energy consumption. These solutions include rainwater tanks, stormwater systems, solar hot water, grey water systems, water recycling, and water-saving devices.

What inspired the creation of PJT Green Plumbing?

Our Managing Director, Paul Talbot, was inspired to specialise in green plumbing after noticing the impact of stormwater outflow on the marine environment while scuba diving.

How long has PJT Green Plumbing been in business?

PJT Green Plumbing has been providing sustainable plumbing solutions for over twelve years, making us one of the first companies dedicated to green plumbing in Melbourne.

Does PJT Green Plumbing provide general plumbing and gas fitting services?

Yes, in addition to our green plumbing solutions, we also provide all manner of general plumbing and gas fitting services.

For More Information
Follow us
  • facebook
  • twitter
  • instagram
  • instagram
Cnbg Img
Get In Touch

    Water Harvesting Solutions &
    Green Plumbing Melbourne
    • Year Of Experience
      Years of Experience
    • Sustainability
      Focus on Sustainability
    • Competitively Priced
      Competitively Priced
    • Build Order
      Build to Order
    Project Gallery Bg
    Our Projects
    • Our Project
    • Our Project After
    • Our Project Before
    • General Plumbing 1
    • General Plumbing 2
    • General Plumbing 3
    • Water Pump
    Effortless Rainwater Tank Solutions with PJT Green Plumbing

    At PJT Green Plumbing, we understand the importance of providing a seamless and hassle-free experience for our customers. From the moment you give us a call to the completion of your rainwater tank project, we will be with you every step of the way. Our four-step process ensures you receive top-notch service and a rainwater tank solution that meets your needs.

    Step 1: Receiving Your Call

    Our friendly customer service team is ready to take your call on 1300 731 578. We will listen to your needs and gather essential information about your rainwater tank project. This way, we can better understand your requirements and provide you with the best possible solution.

    Step 2: On-site Assessment and Quote

    One of our experienced technicians will visit your property to assess the area and determine the type of rainwater tank that best suits your needs. They will consider factors such as the available space, water usage requirements, and your budget. Following the assessment, we will provide an accurate quote for the supply and installation of your new rainwater tank.

    Step 3: Professional Installation

    Upon your approval of the quote, our skilled technicians will schedule the installation of your rainwater tank at a time that suits you. We take pride in our workmanship and use only the highest quality materials and equipment. Our team will work efficiently to ensure the installation process is smooth and causes minimal disruption to your daily activities.

    Step 4: Job Completion and Aftercare

    Once your rainwater tank is installed, our team will ensure the area is left clean and tidy. We will also provide you with clear instructions on how to maintain your new tank and answer any questions you may have. At PJT Green Plumbing, we value our customers and offer ongoing support to ensure your rainwater tank continues to function optimally.

    Choose PJT Green Plumbing for a seamless rainwater tank solution that you can trust. Call us today at 1300 731 578 to discuss your requirements and experience the difference in our four-step process.

    Associated Sponsors
    • Eco Sac
      Green Plumbers
    • Onga
    • Rinnai
    • Sponser
    • Waterplex
      Cleanup Water