Rainwater Tank: A Reliable Solution for Your South West Home or Rural Property

Are you looking for a rainwater tank? Maybe you’re a homeowner looking to reduce water bills or a rural resident seeking a dependable water storage solution, a water tank is a practical investment. At Gilmour Plumbing & Gas, we specialise in Australian-made Kingspan water tanks that combine durability, efficiency, and style.

Image of a Kingspan Rainwater Tank with the Authorised Agent for Kingspan Water Tanks logo displayed.

Why Choose a Rainwater Tank?

What Are the Benefits of a Rainwater Tank?

  • Water Conservation: Capture rainwater to reduce dependence on mains water.
  • Cost Savings: Lower water bills and use stored water for irrigation, cleaning, or even drinking.
  • Sustainability: Support the environment by conserving this precious resource.

Which Tank is Right for You?

We provide Kingspan Rhino Corrugated, Heritage Corrugated & Streamline Water Tanks, which cater to diverse requirements:

  • Residential: Compact and stylish tanks for suburban homes.
  • Rural: Large-scale tanks designed for farms and rural properties.

Are you Thinking About Installing a Rainwater Tank?

Protect your water supply with a Kingspan water tank from Gilmour Plumbing & Gas. With a 20-year warranty and capacities ranging from 26,000L to 365,000L, you’ll enjoy long-term peace of mind.

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Learn more about our range

FAQs About Rainwater Tanks

A rainwater tank is a storage system that collects and stores rainwater from your roof. The water is funnelled through gutters and downpipes into the tank, where it can be used for irrigation, household use, or drinking (if filtered properly).

  • Water Conservation: Reduces reliance on mains water.
  • Cost Savings: Lowers water bills over time.
  • Sustainability: Minimises environmental impact.
  • Emergency Supply: Provides backup water during shortages or emergencies.

The size depends on your water usage, roof catchment area, and local rainfall. However, you can use this formula to work out a rough estimate:
Catchment Area (m²) x Annual Rainfall (mm) = Total Rainwater Harvested (L)

For example, a 350m² roof in a region receiving 600mm rainfall can collect up to 210,000 litres per year.

Use our handy calculator to estimate how much rainwater you can collect.

Yes, with proper filtration and treatment, rainwater can be safe for drinking. Ensure your system includes filters certified for potable water use.

Rainwater tanks are commonly made from:

  • Steel (e.g., COLORBOND® or ZINCALUME®): Durable and rust-resistant.
  • Plastic: Lightweight and cost-effective.
  • Concrete: Ideal for large capacities and underground installations.

The best material depends on your specific needs and budget.

The cost varies based on tank size, material, and installation complexity. You can request an obligation-free quote from our team.

The lifespan depends on the material:

  • Steel Tanks: 20–30 years with proper maintenance.
  • Plastic Tanks: 10–20 years.
  • Concrete Tanks: Up to 50 years.

Regular maintenance can extend the lifespan of your tank.

Our Kingspan Water Tanks come with a 20-year warranty.

  1. Choose the right tank size and material.
  2. Select an appropriate location with stable ground.
  3. Prepare the base (e.g., concrete or gravel pad).
  4. Install gutters, downpipes, and filters.
  5. Connect the tank to your plumbing or irrigation system.

Yes, tanks can be connected to household plumbing for toilets, laundry, and outdoor use. A licensed plumber can ensure compliance with regulations and safe installation.

  • Blocked Gutters/Filters: Regular cleaning prevents clogging.
  • Algae Growth: Ensure the tank is sealed and shaded from sunlight.
  • Leaks: Inspect seals and fittings regularly for damage.
  • Pump Malfunction: Regular servicing helps avoid breakdowns.

Some governments offer rebates or incentives to encourage rainwater tank installation. Check with your local council or government for eligibility and details.

View the Water Corporation Regional Rainwater Tank Rebates information.

  • Accessibility: Easy access for maintenance and cleaning.
  • Proximity to Gutters: Close to the roof’s catchment area.
  • Stable Ground: Install on a level and stable base to prevent shifting or damage.

Our team can help you with this decision, just contact us for a free quote.

  • Clean gutters, downpipes, and screens regularly.
  • Inspect the tank inlet and outlet filters.
  • Maintain your first flush diverter and pump.
  • Empty and clean the tank as needed to remove sediment.

Check out our detailed guide for rainwater tank maintenance.