Plastic Water Tanks

Plastic water tanks have become one of the most reliable and widely used solutions for storing rainwater across Australia. Whether installed on suburban homes, rural properties or commercial sites, modern plastic water tanks offer durability, flexibility and long-term performance.

At Polymaster, we manufacture a wide range of poly water tanks designed specifically for Australian conditions. Made from UV-stabilised polyethylene, our tanks are built to handle harsh sunlight, temperature changes and long-term outdoor exposure while keeping stored rainwater clean and safe.

Polyethylene tanks are lightweight compared to steel alternatives and are highly resistant to corrosion, making them a popular option for residential rainwater harvesting, agricultural storage and commercial water management systems.

What Are Poly Water Tanks?

Poly water tanks are water storage tanks made from high-density polyethylene, a durable plastic material engineered to handle environmental exposure and long-term water storage. This material provides excellent resistance to rust, corrosion and UV damage.

Because of these properties, plastic water tanks are commonly used for:

• Rainwater harvesting
• Household water supply
• Garden irrigation
• Agricultural water storage
• Livestock watering
• Backup water supply for rural properties

Poly tanks are also easy to transport and install, making them suitable for both residential homes and large farming operations.

Types of Plastic Water Tanks

Polymaster manufactures a variety of plastic water tanks designed to suit different property sizes and water storage requirements. From compact tanks for gardens to large rural tanks storing tens of thousands of litres, there is a solution for nearly every situation.

Slimline Plastic Water Tanks

Slimline water tanks are designed for properties where space is limited. Their narrow design allows them to fit neatly beside homes, fences or pathways while still storing a useful volume of water.

Polymaster slimline tanks are engineered to maximise water capacity while using minimal space along a wall or boundary. These tanks are commonly installed in suburban homes where traditional round tanks may not fit comfortably. Slimline tanks are available in sizes from 600 litres up to 5,000 litres, making them suitable for a variety of residential water storage needs.

Some of the most popular slimline tanks include:

• 2000L Slimline Water Tank – a compact solution designed to store a good amount of rainwater while fitting into tight spaces beside homes.
• 3000L Slimline Water Tank – ideal for households looking for greater rainwater storage without sacrificing space.
• 5000L Slimline Water Tank – one of the largest slimline options, offering substantial storage for garden irrigation and household use.

These tanks are particularly useful for collecting rainwater from roof guttering systems and supplying water for outdoor use, toilets, laundry systems or garden irrigation.

Small Plastic Water Tanks

Small water tanks are ideal for properties that require modest water storage or where installation space is limited. These tanks are commonly used for gardens, sheds, garages and small residential blocks.

Polymaster small tanks typically include capacities under 5,000 litres, making them perfect for:

• Garden watering
• Small irrigation systems
• Washing equipment
• Rainwater collection for outdoor use
• Backup water supply

Because of their smaller footprint, these tanks are easy to install and maintain. They are often used as supplementary tanks alongside larger systems or as standalone solutions for garden water storage.

Large Round Plastic Water Tanks

For larger properties and farms, Polymaster manufactures large round poly water tanks capable of storing significant volumes of water. These tanks are commonly installed on rural properties where rainwater may be the primary household water supply.

Round tanks offer excellent structural strength due to their circular design and are well suited for storing large water volumes safely.

Some of the most popular large tanks in the Polymaster range include:

• 22,500L Round Water Tank – a popular choice for rural homes and large residential properties requiring substantial rainwater storage.
• 27,000L Round Water Tank – ideal for farms and agricultural operations with higher water demands.
• 31,700L Round Water Tank – commonly used for irrigation systems and livestock water supply.
• 50,000L Mega Tank – the largest rainwater tank in the range, manufactured in one piece for maximum strength and reliability.

Large plastic tanks like these provide excellent drought protection and ensure properties maintain a reliable water supply throughout dry seasons.

Why Choose Plastic Water Tanks?

Plastic water tanks offer several advantages that make them one of the most popular water storage solutions available today.

Key benefits include:

• UV-stabilised polyethylene construction
• Corrosion and rust resistance
• Long service life
• Lightweight and easy to install
• Available in a wide range of sizes
• Suitable for residential and agricultural use

Because they are manufactured from high-quality polyethylene, poly tanks are capable of handling Australia’s harsh climate while maintaining structural strength and water safety.

Choosing the Right Plastic Water Tank

Selecting the right plastic water tank depends on several factors including available space, water demand and rainfall patterns.

Smaller properties may benefit from slimline or compact tanks that maximise storage while fitting into tight spaces. Larger homes and rural properties often choose round tanks with capacities over 20,000 litres to ensure a reliable long-term water supply.

In many cases, installing multiple tanks allows property owners to increase storage capacity while spreading tanks across different areas of the property.

Plastic Water Tanks from Polymaster

At Polymaster, we design and manufacture high-quality plastic water tanks built for Australian conditions. Our tanks are engineered using advanced polyethylene manufacturing processes and are available in a wide range of sizes to suit different applications.

Whether you need a slimline tank for a suburban home, a small tank for garden use or a large rural tank storing tens of thousands of litres, Polymaster provides durable solutions designed for long-term performance.

With capacities ranging from compact garden tanks through to large 50,000 litre rural storage tanks, our plastic water tanks help Australians collect, store and manage rainwater efficiently.