Water Pumps

May 27, 2026

Investing in a high-quality rainwater tank is one of the smartest decisions you can make for your home, garden, or rural property. But storing that fresh, clean rainwater is only half the battle. To actually use it, whether you are watering your veggie patch, washing your car, or flushing your toilets, you need a reliable mechanism to move that water from the tank to your taps.

That is where a dedicated water pump comes into play.

Choose the Right Water Pump for Your Rainwater Tank

In this guide, we will explore what water pumps are used for, how they maximise the efficiency of your Polymaster rainwater tanks, and provide a breakdown of the premium pump systems available to get the job done right.

What are Water Pumps Used For?

Without a pump, you are entirely reliant on gravity. While gravity feed is fine for filling a bucket directly from your tank’s ball valve, it will not give you the pressure required to run an irrigation system, power a hose, or feed appliances inside your home.

When paired with Polymaster’s certified round or slimline rainwater tanks, a high-quality water pump expands your options dramatically:

  • Garden and Lawn Irrigation: Powering sprinklers, pop-up systems, and hand-held trigger nozzles to keep lawns and veggie patches green through dry periods.

  • Household Integration (Mains Backup): Supplying water to your washing machine and toilets. Specialised household pumps can automatically switch back to mains water if your tank runs low.

  • Washdowns and Outdoor Cleaning: Providing the high pressure required to clean driveways, decks, or farm vehicles efficiently.

  • Fire Fighting and Emergency Prep: In rural regions, petrol-powered firefighting pumps deliver high-volume water at high pressure to protect properties when the electricity cuts out.

Exploring the Polymaster Water Pump Range

To ensure you get the perfect water pressure for your property’s demands, Polymaster stocks a varied range of highly reliable Hyjet pumps and fully integrated pump systems.

Hyjet Pump 370W with Brass Change Over Device
RRP $830

Hyjet Pump – 370W with Brass Change Over Device

MHR20-370

Hyjet Pump 550W with Brass Change Over Device
RRP $900

Hyjet Pump – 550W with Brass Change Over Device

MHR20-550

Hyjet Garden Pump 600W DH Series Pump
RRP $405

Hyjet Garden Pump – 600W DH Series Pump

DHJ600

3 Things to Consider When Picking Your Tank Pump

To narrow down the perfect choice from our range, ask yourself these three critical questions:

1. Where will the pump live?

If you have minimal yard space around your Slimline Water Tank, a submersible pump sitting inside the tank keeps the installation tight and whisper-quiet. If space permits, an external pump shielded by an integrated cover, like the Garden Pump System PHGPS, offers easy access and exceptional durability.

2. What fixtures are you supplying?

If you are strictly watering a few garden beds, a 600W option like the DHJ600 will comfortably give you mains-equivalent pressure. However, if the pump needs to feed indoor laundry lines or multi-level building zones, a unit with a built-in hydraulic mains change-over device, like the MHR20-550, ensures seamless flow even when the tank runs low.

3. Do you have a secondary water filtration system?

Pumps push water at high speeds, meaning small fine sediments could find their way into your household lines. Pairing your new water pump with a Polymaster Rainwater Filter keeps your pipes clean, your pump protected from wearing out prematurely, and your appliances safe.

Complete Your Water Setup Today

Choosing a certified Polymaster rainwater tank is an amazing step toward water security, but adding the right pump brings your storage system to life. Explore our full collection of Water Pumps and Accessories online or contact our expert team today to find the ideal match for your property setup!

Hyjet Pump 370W with Brass Change Over Device
RRP $830

Hyjet Pump – 370W with Brass Change Over Device

MHR20-370

Hyjet Pump 550W with Brass Change Over Device
RRP $900

Hyjet Pump – 550W with Brass Change Over Device

MHR20-550

Hyjet Garden Pump 600W DH Series Pump
RRP $405

Hyjet Garden Pump – 600W DH Series Pump

DHJ600