1. Raw Material Preparation

The production of poly water tanks begins with polyethylene¹, a versatile thermoplastic polymer. The raw material comes in the form of tiny granules or powdered resin. These materials are chosen for their high strength, flexibility, and resistance to UV radiation, ensuring the tanks can withstand harsh environmental conditions and also store potable water, safe for drinking.

2. Rotational Moulding

The most common method used to manufacture poly water tanks is rotational moulding (also known as rotomoulding). This technique allows for the creation of seamless, durable tanks with uniform thickness. Here’s how it works:

Mould Preparation

A mould in the shape of the desired tank is created. These moulds are typically made of steel or aluminium and come in various sizes to accommodate different tank capacities.

Loading the Mould

The polyethylene resin is measured and loaded into the mould. If one of the myriad coloured tanks are desired, pigments are added at this stage to ensure the colour is evenly distributed throughout the tank.

Heating and Rotating

The mould is placed into an oven and heated to temperatures of about 260°C while being rotated along two perpendicular axes. This rotation ensures the resin evenly coats the inside of the mould, creating a uniform layer.

Cooling

After the heating process, the mould is removed from the oven and cooled using air or water sprays. The gradual cooling process solidifies the polyethylene into the desired tank shape.

Demoulding

Once cooled, the mould is opened, and the newly formed tank is carefully removed. At this stage, the tank is inspected for any defects or inconsistencies.

3. Fittings and Assembly

After the tank is moulded, additional components like inlet and outlet fittings, overflow pipes, and lids are added. These fittings are typically installed using precision tools to ensure watertight seals and proper functionality.

4. Quality Control

Each poly water tank undergoes rigorous quality control tests to ensure it meets industry standards. These tests include:

• Leak Tests: To verify the tank is completely watertight.
• UV Resistance Tests: To ensure the tank can withstand prolonged exposure to sunlight without degrading.
• Strength Tests: To confirm the tank can handle the pressures of water storage and external forces.

5. Distribution and Use

Once the tanks pass quality control, they are cleaned, packaged, and shipped.Poly water tanks are used for a variety of applications, including rainwater harvesting, irrigation, and potable water storage.

Advantages of Rotomoulded Poly Water Tanks

To summarise, the manufacturing process gives poly water tanks several advantages:

• Seamless Construction: Reduces the risk of leaks.
• Myriad options: Available in various shapes, sizes e.g slimline, and colours.
• Durable: Resistant to UV rays, corrosion, and impact.

Conclusion

The creation of poly water tanks is a tried and tested process that combines advanced technology with precision craftsmanship. Understanding how these tanks are made highlights the innovation behind an essential product that supports water conservation and storage worldwide. The next time you see a poly water tank, you’ll know the intricate journey it took to serve its purpose. Contact our specialist team today to learn more about a water tank that would suit your needs.

1. Why Rainwater Can Be Dirty

When we think of rainwater, we often imagine pure, clean water falling from the sky. While rainwater itself is generally clean, it can pick up contaminants as it makes its way into your tank. Here are some common reasons why your rainwater may become dirty:

• Debris from Roofs: Leaves, twigs, and dust can accumulate on your roof and wash into the rainwater tank when it rains. This debris can make your water look cloudy or even muddy.
• Animal Droppings: Birds, lizards, and other animals may leave droppings on your roof, which can be washed into your tank, introducing bacteria and pathogens.
• Atmospheric Pollutants: Depending on where you live, rain can carry pollutants from the air, such as dust, pollen, and industrial emissions, which may end up in your tank.
• Algae Growth: In tanks exposed to sunlight, algae can begin to grow, turning your water green and affecting its smell and taste.

How to Keep Rainwater Clean:

• Use a Gutter Guard and First-Flush Diverter: Installing gutter guards or rain heads will reduce the amount of leaves and debris entering your system. A first-flush diverter directs the initial rainfall away from your tank, allowing the first, dirtiest water to be discarded.
• Regular Cleaning and Maintenance: Clean your tank, gutters, and roof regularly to prevent buildup of contaminants.
• Install Filters: Filters at different stages, such as pre-tank and post-tank, can help reduce pollutants and debris in your water.

2. Is Rainwater Hard or Soft?

Rainwater is typically soft water, meaning it has a low mineral content compared to groundwater. Hard water contains higher concentrations of calcium and magnesium ions, which cause scaling in pipes, faucets, and appliances. Here’s a closer look at the characteristics of rainwater in this regard:

• Soft Water Characteristics: Rainwater doesn’t naturally contain the minerals that cause water hardness, so it’s softer than tap water or groundwater. This makes rainwater great for household uses like laundry, as it lathers well with soap and doesn’t leave mineral deposits.
• Becoming Hard Over Time: While rainwater is initially soft, if your tank has cement, limestone, or concrete materials, the water can leach minerals from these surfaces over time. This can make the water slightly harder, although it’s usually not enough to create scaling problems.

How to Maintain Soft Water in Your Rainwater Tank:

• Choose Tank Materials Wisely: Opt for plastic (polyethylene) tanks if you want to avoid mineral leaching, which can lead to increased hardness in your water.
• Regular Testing: If you notice signs of hardness, like spots on dishes, consider testing your water to understand its mineral content. Basic home test kits can measure hardness, or you can send a sample to a lab for more detailed analysis.

3. How to Test and Improve the Quality of Your Rainwater

Regular water testing is the best way to monitor your rainwater quality. Testing can alert you to high levels of pollutants, bacteria, or minerals that might affect your water's cleanliness or hardness.

• pH Levels: Soft rainwater is typically slightly acidic. If the pH is too low, consider adding a neutralising filter to prevent corrosion in metal pipes.
• Mineral Content: A basic test will show you the levels of calcium, magnesium, and other minerals, helping you determine if your water is becoming harder over time.
• Bacterial Testing: For tanks used as a drinking water source, bacterial testing is essential. UV filters or chlorination may be necessary to ensure safety.

Final Thoughts

Rainwater tanks offer an efficient, eco-friendly way to manage water resources, but maintaining water quality is essential. By taking proactive steps to manage debris, monitor tank conditions, and keep contaminants at bay, you can enjoy the benefits of clean, soft rainwater for years to come. Whether you’re watering your garden, doing laundry, or considering rainwater for drinking purposes, regular upkeep and testing will ensure your rainwater remains a valuable asset. To learn more about finding the right rainwater tank for your home, business, or property, contact our friendly team today.

The answer is a resounding yes—poly water tanks are perfectly safe for storing drinking water. They are manufactured from food-grade, UV-stabilised polyethylene¹ (plastic) material, which means they do not leach harmful chemicals into the water when exposed to sunlight. Additionally, these tanks are designed to meet stringent health standards, making them safe for potable water storage.

Ensure the water tank you choose adheres to the stringent Australian standards for water tanks for peace of mind your water tank is safe for storing drinking water.

But while poly tanks themselves are safe, ensuring the quality of the water inside them is just as important. Rainwater, which is often stored in poly tanks, can be affected by external contaminants such as dust, leaves, and animal droppings, particularly when it’s collected from roofs.

Enhancing Water Quality with Rainwater Harvesting Accessories

To further improve the quality of water stored in poly tanks, there are several rainwater harvesting accessories available. One particularly effective accessory is the First Flush Downpipe Diverter kit. Think of it as a purifier for your rainwater collection system.

When rainwater first hits your roof, it tends to wash off any accumulated dirt, debris, and contaminants from the surface. The first few millimetres of rainfall may contain unwanted particles that can affect the quality of the water. This is where the First Flush Diverter comes in—it diverts this initial runoff away from your storage tank, preventing it from contaminating the water inside.

By diverting the first flush of water, which is most likely to carry pollutants, this device helps to ensure that only cleaner, purer water enters your poly tank. This simple addition can significantly enhance the safety and quality of the water you store, making it even more suitable for drinking and other household uses.

Other suggestions for keeping debris from entering your system include

• Tank Screen Cover
• Leaf Beater Rain Head

In Summary

Poly water tanks are a safe, reliable option for storing drinking water, but to maintain high water quality, it’s essential to implement accessories like a First Flush Diverter. By doing so, you can protect your stored water from contaminants and ensure that it remains fresh and safe for consumption.

Understanding the Lifespan of Poly Water Tanks

One of the primary concerns when investing in a water tank is its longevity. Poly water tanks¹ are known for their impressive lifespan, which typically ranges from 20 to 30 years, depending on factors such as maintenance, environmental conditions, and the quality of the tank. Here's what contributes to their longevity:

1. UV Stabilisation: Poly tanks are manufactured with UV-stabilised materials, which protect them from the damaging effects of the sun. This UV resistance ensures that the tank remains strong and doesn’t degrade or become brittle over time, even when exposed to direct sunlight.
2. Corrosion Resistance: Unlike metal tanks, poly water tanks are resistant to rust and corrosion. This is especially beneficial in areas with high humidity or saltwater exposure, where metal tanks would deteriorate more quickly. The corrosion-resistant nature of poly tanks helps extend their lifespan significantly.
3. Seamless Construction: Poly tanks are typically moulded in one piece. This construction reduces the risk of leaks and structural weaknesses that can shorten the tank's life. It also makes the tank more robust and less prone to cracks.
4. Impact Resistance: Polyethylene is a flexible and durable material that can withstand impacts without cracking or breaking. This makes poly tanks less susceptible to damage during transportation, installation, or accidental impacts, further contributing to their longevity.

Benefits of Poly Water Tanks

Poly water tanks offer a host of advantages that make them a preferred choice for water storage. Here are some of the key benefits:

1. Cost-Effective: One of the most significant advantages of poly water tanks is their affordability. Compared to other materials like stainless steel or concrete, poly tanks are much more cost-effective. Their long lifespan also means that you'll get great value for your investment over time.
2. Lightweight and Easy to Install: Poly water tanks are lightweight, making them easy to transport and install. This reduces installation costs and time compared to heavier tanks like concrete or steel. Additionally, their lightweight nature means they can be placed on a variety of surfaces, including elevated platforms, underground or rooftops.
3. Variety of Sizes and Shapes: Poly tanks are available in a wide range of sizes and shapes, from small tanks suitable for residential use to large tanks that can store thousands of litres of water. This versatility allows you to choose a tank that perfectly fits your space and water storage needs.
4. Safe for Drinking Water: Polyethylene is a food-grade material, meaning it’s safe for storing drinking water. Poly tanks don’t leach harmful chemicals into the water, making them a safe and hygienic option for potable water storage. Many poly tanks are also designed with an opaque-coloured exterior to block sunlight, which helps prevent algae growth inside the tank.
5. Low Maintenance: Poly tanks require minimal maintenance compared to other types of water tanks. They are easy to clean and resistant to algae and bacteria growth. The moulded design also means there are no joints or seams that require regular inspection or repair, reducing overall maintenance efforts.

Conclusion

Poly water tanks offer a durable, cost-effective, and versatile solution for water storage. With a lifespan of 20 to 30 years, these tanks provide long-term value and peace of mind. Their resistance to UV rays, corrosion, and impact, combined with their low maintenance requirements, makes them a reliable choice for both residential and commercial use.

Whether you need a tank for drinking water, irrigation, or industrial purposes, poly water tanks provide a safe and sustainable option that can meet your needs while also offering environmental benefits. Investing in a poly water tank is not just a smart financial decision, but also a step towards more efficient and eco-friendly water management.

1. A Free Resource

Rainwater is a free and abundant resource, especially during wetter seasons. By installing a water tank, you can collect and use throughout the year. This can significantly reduce your reliance on council water supplies, leading to lower water bills and a more sustainable lifestyle.

2. A Steady Water Supply

By capturing and storing excess rainwater during the winter, you can ensure a steady supply of water for your garden, household needs, and even for emergencies.

3. Supporting Your Garden

Rain water can be captured and used to irrigate your garden or veggie patch during the drier months. Plants thrive on rainwater as it is naturally soft and free from chemicals often found in tap water. With a water tank, you can keep your garden lush and healthy all year round, without worrying about watering restrictions or cost.

4. Reducing Environmental Impact

By collecting rainwater, you reduce the amount of stormwater runoff that can cause erosion, flooding, and pollution in waterways. This simple step helps to mitigate the environmental impact of heavy rainfall and contributes to a healthier, more balanced ecosystem.

5. Cost Savings

Investing in a water tank can lead to significant cost savings over time. With reduced dependence on council water, you can expect lower utility bills.

6. Boosting Property Value

Water tanks are an attractive feature for environmentally conscious buyers. Having a rainwater harvesting system in place can enhance the value of your property, making it a worthwhile investment if you ever decide to sell your home.

7. Flexibility and Convenience

Modern water tanks come in a variety of sizes, shapes, and materials, such as slimline and underground, allowing you to choose one that fits your needs and space constraints. Whether you have a large property or a small urban garden, there’s a water tank solution for you. Additionally, many tanks are designed to be unobtrusive and blend seamlessly with your property’s aesthetics.

Tips for Installing a Water Tank

• Choose the Right Size: Consider your water usage needs and the amount of rainfall in your area. Larger tanks are ideal if you have a big garden or household, while smaller tanks can suffice for less extensive garden only use.
• Select a Suitable Location: Install your tank in a location that maximises rainwater capture from your roof and minimises the distance to where the water will be used. Ensure it’s on a stable, level surface. A concrete pad makes the ideal base.
• Maintenance: Regularly clean your gutters and tank filters to prevent blockages and maintain water quality. Check the tank and fittings for any leaks or damage.
• Comply with Regulations: Ensure your installation complies with local council regulations and plumbing codes. Some areas may have specific requirements for water tank installations.

Conclusion

Taking advantage of higher than average winter rainfall by installing a water tank is a smart, sustainable decision. It offers numerous benefits, from cost savings and environmental impact reduction to enhanced garden health and property value. Don’t let this season’s rain go to waste – start your journey towards a more water-conscious future by investing in a water tank today. Contact our friendly and knowledgeable team today.

What is the life expectancy of a poly water tank?

Poly water tanks are renowned for their longevity, with many manufacturers offering warranties ranging from 10 to 25 years or more, depending on the quality of the tank and the environmental conditions. Generally, a well-maintained poly tank can last anywhere from 20 to 30 years or even longer. Factors such as UV exposure, temperature fluctuations, and chemical exposure can affect the lifespan of the tank. Regular inspection and maintenance can help prolong its life further, ensuring reliable water storage for years to come.

Which is better: steel or poly water tank?

The choice between steel and poly water tanks often depends on specific requirements and preferences. Steel tanks are known for their strength and durability in high-heat situations, making them suitable for heavy-duty industrial applications. However, they can be prone to corrosion over time, especially in harsh environments. 

On the other hand, poly water tanks offer excellent resistance to rust, corrosion, and chemical degradation, making them ideal for outdoor use and storing potable water. Additionally, poly tanks are lightweight, making them easier to transport and install compared to their steel counterparts.

When deciding on a water tank¹, always check with your local council for any bushfire regulations for steel water tanks in your area.

Are poly tanks safe for drinking water?

One of the most common concerns regarding poly water tanks is their safety for storing drinking water. Polyethylene is considered a safe material for water storage and is covered by Australian safety and regulations for contact with food and drinking water. High-quality poly tanks are manufactured using food-grade materials and undergo rigorous testing to ensure they meet safety and quality standards. Moreover, poly tanks do not impart any taste or odour to the stored water, ensuring it remains clean and fresh for consumption.

What are the disadvantages of polyethylene tanks?

While poly water tanks offer numerous benefits, they also have some limitations to consider. One of the main drawbacks is their susceptibility to UV degradation, which can cause the material to become brittle over time if not properly protected or treated with UV stabilisers. Ensure any tank you select is UV rated. Exposure to certain chemicals and extreme temperatures or fire can also affect the integrity of poly tanks, leading to premature wear and tear.

Summary

In conclusion, poly water tanks are a versatile and cost-effective solution for various water storage needs. Their durability, safety, and ease of maintenance make them a popular choice among homeowners, farmers, and businesses alike. However, it's essential to consider factors such as UV exposure, chemical compatibility, and maintenance requirements to ensure the longevity and performance of poly tanks. By understanding their strengths and limitations, you can make an informed decision when choosing the right water storage solution for your specific requirements.

To speak to a water tank specialist, please get in touch with our friendly team today.

Here are some key benefits contributing to the popularity of round water tanks:

Structural Integrity

• The circular shape of round water tanks distributes water weight evenly, reducing stress points. This structural design enhances the tank's stability and durability, making it better equipped to withstand external forces such as strong winds and heavy rainfall. The absence of corners also contributes to the tank's overall strength.

Ease of Installation

• Installing a round water tank is often simpler and more straightforward. The lack of corners and uniform weight distribution make it easier to transport, position, and secure in place. This ease of installation is particularly advantageous for homeowners looking for a hassle-free water storage solution.

Cleaning

• Corner free shapes reduce the likelihood of sediment buildup in hard to clean places. This helps maintain water quality over time, ensuring that the stored water remains fresher and free from contaminants longer. It also can reduce the maintenance frequency.

Aesthetic Appeal

• Round water tanks offer a classic and timeless design that blends seamlessly with various architectural styles. The simple and unobtrusive appearance allows these tanks to integrate harmoniously into the landscape, without imposing on the visual aesthetics of the property. This makes them an attractive choice for those who value both functionality and design.

Versatility in Size

• Round water tanks come in a variety of sizes, catering to different water storage needs. Whether for residential, agricultural, or industrial use, the availability of various capacities makes it easy for individuals and businesses to find a suitable round tank that meets their specific requirements, from smaller residential tanks to larger rural applications.

Cost-Effective

• Round tanks can be more cost-effective to manufacture, transport, and install compared to tanks with complex shapes. This cost efficiency can make them a budget-friendly choice for those looking to invest in a reliable water storage solution without breaking the bank.

Summary

To summarise, the popularity of round water tanks can be attributed to their efficient use of space, structural integrity, ease of installation, reduced maintenance schedule, aesthetic appeal, versatility, and cost-effectiveness. These factors collectively make round tanks a practical and attractive option for a wide range of applications from residential to commercial and rural.

To learn more about a rain water tank that’s right for you, contact our knowledgeable team today.

Water conservation is not limited to the confines of our kitchens and bathrooms. It extends to the outdoor areas surrounding our homes as well.

Embracing water-saving practices in your garden and outdoor spaces is crucial.

Here are some valuable tips, referenced from the NSW Government Website¹ to help you reduce water consumption outside your home:

Broom Instead of Hose

Opt for a broom when cleaning your driveway, balcony, or deck patio, as opposed to a hose. This simple switch not only keeps these areas tidy but also saves water.

Watering Can Over Hose

When it comes to watering your garden or plants, choose a watering can over a hose. Surprisingly, a hose can use up to 1,000 litres of water per hour, making a watering can a more efficient option.

Pool Cover Efficiency

If you have a pool, use a pool cover to prevent evaporation. Without a cover, over half of your pool water can disappear. This easy step helps conserve water and maintain your pool's water levels.

Lawn-Friendly Car Wash

When washing your car, park it on the lawn and use a bucket instead of a hose for washing and rinsing. This not only saves water but also benefits your lawn, keeping it healthy and green.

Smart Plant and Lawn Choices

Make informed decisions about the plants and lawns in your outdoor spaces. Opt for slow-growing, water-saving lawn varieties like Couch Grass. Additionally, consider incorporating local native plants that demand less maintenance and watering.

Strategic Watering Times

Time your plant and garden watering for the early morning or late afternoon. This schedule minimises water loss through evaporation, ensuring that your plants receive the maximum benefit from each watering session.

Summary

By implementing these water-saving tips outside your home, you not only contribute to environmental conservation but also reduce your water bills. Small changes in outdoor water usage can make a significant impact collectively and help you get the most out of your rain water supply this Summer.