Rainwater Tanks for Wollongong Homes, Businesses and Rural Properties

The Tank Factory offers a wide selection of water tanks for properties throughout Wollongong and the Illawarra. Available options include round, slimline, underground and underdeck Duraplas poly tanks, together with round, slimline, Modline and square Kingspan Aquaplate steel tanks.

The Tank Factory is the online sales division of Duraplas Industries. Our parent company manufactures Duraplas poly water tanks in Australia, allowing customers to buy through the manufacturer’s own sales division. We also offer Kingspan Aquaplate steel water tanks under Kingspan’s separate manufacturing, delivery and warranty arrangements.

Whether the available space is beside a suburban home, underneath a suitable deck, below a driveway or within a larger rural property, the range provides practical options for different footprints and storage requirements.

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Choosing a Water Tank for an Illawarra Property

A suitable tank balances four main considerations:

• the length, width and height available;
• the connected roof catchment area;
• the intended use and expected demand for the stored water; and
• the delivery route and access available at the property.

Tank dimensions should be considered together with room for manufacturing tolerances, plumbing connections, airflow, inspection and future maintenance. Customers planning internal household connections, an engineered stormwater system or a multi-tank arrangement should confirm the final layout with their plumber or relevant project professional before ordering.

Round Poly Water Tanks

Round poly water tanks generally provide excellent storage capacity for their footprint and purchase price. The Duraplas round rainwater tank range extends from compact 360-litre models through to large 34,000-litre tanks.

The 10,000-litre and 22,700-litre round models are popular choices where the available space allows. The 22,700-litre tank provides substantial storage for larger residential blocks, acreage, gardens, nurseries, rural properties and other high-demand applications.

Multiple tanks can also be connected to create greater overall storage. The required balance lines, pipe sizes, overflow arrangement and hydraulic layout should be confirmed by a suitably qualified plumber or project adviser.

Slimline Poly Water Tanks

Slimline poly water tanks are designed for properties where width is limited. They can make productive use of areas beside homes, garages, sheds and other suitable structures.

Duraplas slimline tanks are available in capacities from approximately 450 to 5,000 litres. The range includes different combinations of length, width and height, allowing customers to compare the total footprint rather than selecting by capacity alone.

Underground and Underdeck Water Tanks

Underground water tanks provide an effective way to preserve usable space above the tank. The Duraplas Lattice underground range includes 3,000-litre and 5,000-litre models for suitable under-yard and trafficable installations.

Underdeck water tanks are available in capacities from approximately 1,000 to 5,000 litres and can make use of suitable space beneath raised structures.

These projects benefit from early coordination between the property owner, installer and any relevant engineer. The Tank Factory supplies and delivers the new tank, while excavation, lifting equipment, installation, plumbing and site works are arranged by the property owner through their chosen contractors.

Kingspan Aquaplate Steel Water Tanks

Our Kingspan Aquaplate steel water tank range includes several shapes and capacities:

• round steel tanks from approximately 1,000 to 27,000 litres;
• slimline steel tanks from approximately 1,000 to 8,000 litres;
• Modline steel tanks from approximately 1,000 to 7,000 litres; and
• square steel tanks from approximately 1,000 to 7,000 litres.

Steel tanks are available in a broad selection of finishes, with the applicable options depending on the tank model. Availability, freight and delivery conditions are confirmed against the nominated postcode and selected Kingspan tank.

Rainwater Catchment in Wollongong

Rainfall can vary considerably across Wollongong and the broader Illawarra, particularly between coastal suburbs and locations closer to the escarpment. Bureau of Meteorology records also vary according to the weather station and the period covered.

The former Bureau of Meteorology Wollongong University station recorded mean annual rainfall of approximately 1,323.7 millimetres across its 1970–2008 record. This demonstrates the considerable theoretical catchment available from a suitable roof, while actual rainfall will vary from year to year and across the region.

As a general calculation, 1 millimetre of rainfall falling on 1 square metre of connected roof area represents approximately 1 litre of potential catchment before allowing for first-flush diversion, gutter overflow, evaporation, splash and other system losses.

For example:

150 m² of connected roof × 1,323.7 mm annual rainfall = approximately 198,555 litres of theoretical annual catchment.

This does not mean that a property requires a tank of that capacity. Tank selection should balance the available catchment against how frequently water will be used and how much storage space is available.

Our rainwater catchment calculator can assist with an initial estimate.

Practical Uses for Stored Rainwater

Depending on the property, plumbing arrangement and applicable requirements, stored rainwater may support uses such as:

• garden and lawn watering;
• car and outdoor-area washing;
• toilet flushing;
• cold-water laundry connections;
• swimming-pool top-up;
• nursery and landscaping use;
• stock water and rural applications; and
• selected commercial uses.

Regular use creates space in the tank for the next rainfall event. A smaller tank that supplies regular demand can therefore provide excellent practical value, while a larger tank can maintain a greater reserve between rainfall periods.

Wollongong Planning and Stormwater Considerations

Wollongong City Council advises that rainwater tanks can usually be installed as exempt development when the relevant NSW planning requirements are satisfied. The property owner should confirm the requirements that apply to the proposed tank location, dimensions and installation before work begins.

Current Council information is available through the Wollongong City Council rainwater tank information.

Stormwater arrangements depend on the property and its approved drainage system. Wollongong includes sloping sites, escarpment areas and older properties where drainage conditions may require particular consideration. The tank overflow should form part of an appropriately designed stormwater arrangement and be directed away from the tank base.

Where a property relies on an absorption disposal system, Council publishes specific design and siting guidance. These systems should be planned by a suitably qualified professional with regard to the roof catchment, soil, slope, boundaries, buildings and neighbouring properties.

Further local guidance is available from Council’s domestic stormwater drainage information.

Rainwater Storage and On-Site Detention

Rainwater storage and on-site stormwater detention serve different design functions. Where approved plans include on-site detention, hydraulic fittings, storage levels and discharge requirements should follow the engineer’s drawings.

Before ordering tanks for an engineered development, customers should provide the applicable hydraulic plans and confirm any proposed variation with the issuing engineer. This allows the tank model and available fittings to be compared accurately with the approved design.

Preparing the Tank Site

An above-ground Duraplas poly tank requires a level, stable and uniformly compacted base supporting the complete tank footprint.

Depending on the installation, a suitable base may consist of:

• 75–100 mm of correctly prepared and retained fine crusher dust of approximately 3 mm aggregate size; or
• a suitable level reinforced concrete slab designed for the tank and site conditions.

The base should extend beyond the complete tank footprint. The tank overflow should be plumbed away from the tank and base so water is managed without eroding the supporting material.

Customers and installers should review the applicable water tank installation guide before preparing the site.

Water Tank Delivery to Wollongong

Wollongong is included within the current standard Duraplas poly water tank delivery area. Delivery availability and freight for surrounding Illawarra locations depend on the postcode, tank model and transport requirements.

Poly and steel tanks operate under separate delivery arrangements. Where an order includes products from both ranges, the tanks are manufactured and delivered independently.

Once a Duraplas poly order has been scheduled, the customer receives a confirmed delivery date. The driver will usually call ahead on the scheduled delivery day.

The property owner determines what access can be made available beyond the front boundary. On arrival, the driver confirms that the available route is safe and practical for the vehicle, product and everyone assisting. Where final placement requires movement beyond the safe unloading point, the customer can arrange suitable onsite labour or equipment.

For delivery planning, please advise us before ordering about:

• steep driveways or sloping access;
• narrow gates, roads or entrances;
• soft, wet or unstable ground;
• low trees, branches, powerlines or structures;
• limited turning or reversing space; and
• any other feature affecting access by a large delivery vehicle.

Duraplas delivery vehicles require approximately 3 metres of clear width and 5 metres of clear height. A truck and trailer combination may measure approximately 19 metres in overall length.

The number of adult, able-bodied assistants required varies according to the selected tank. This information is displayed on the relevant tank page and in our poly water tank delivery guide.

Why Purchase Through The Tank Factory?

• The Tank Factory is the online sales division of Duraplas Industries.
• Duraplas is an Australian family-owned manufacturer producing locally since 1984.
• Customers purchase Duraplas poly water tanks through the manufacturer’s own sales division.
• Round and slimline Duraplas rainwater tanks include a 20-year manufacturer’s warranty, comprising 10 years repair or replacement followed by 10 years pro-rata, subject to the published warranty conditions.
• Kingspan Aquaplate steel tanks provide further choices in round, slimline, Modline and square configurations.
• Current dimensions, capacities, freight and available options can be compared online.
• Our experienced team can assist with general product, fitting and delivery information.

Our service covers the manufacture, sale and delivery of new water tanks. Property owners arrange installation, plumbing, excavation, removal of existing tanks and project-specific hydraulic or engineering advice through their chosen qualified professionals.

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Our team looks forward to assisting with your Wollongong or Illawarra water tank enquiry.

Related pages: Water Tanks Sydney | Water Tanks Canberra | Rainwater Tank Rebates NSW and QLD | Poly Water Tank Delivery

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