Water storage tanks are vital in various sectors, including residential, agricultural, industrial, and emergency services. They are essential for ensuring a reliable water supply for daily use, irrigation, fire suppression, and industrial processes. This comprehensive guide provides insights into selecting and maintaining water tanks in Sydney, ensuring they serve their purpose efficiently and safely.

Water tanks are containers used for storing water. They come in different sizes, shapes, and materials, each suited for specific needs and environments. From small plastic tanks for home gardens to massive steel tanks for industrial use, understanding the variety and functionality of water tanks in Sydney is crucial for making the right choice.

Selecting the Right Water Tank

1. Material Considerations

  • Plastic/Polyethylene Tanks: Popular for residential use due to their affordability and versatility. They are lightweight, corrosion-resistant, and suitable for above-ground and underground installation.
  • Steel Tanks: Known for their durability and strength, they are ideal for large storage capacities. They can be lined or coated to prevent rust and are often used in industrial settings.
  • Fibreglass Tanks: These are durable, corrosion-resistant, and suitable for storing various types of water, including potable and non-potable. They are often used in harsh environmental conditions.

2. Capacity and Size

The water tank size should be based on the water usage requirements. For households, tank sizes typically range from 1,000 to 10,000 litres, while industrial tanks can hold up to several hundred thousand litres.

3. Location and Installation

Tanks can be installed above ground or underground. Above-ground tanks are easier to install and maintain, while underground tanks save space and maintain water temperature more effectively.

Consideration should be given to accessibility for maintenance and the tank’s exposure to environmental elements.

4. Regulations and Compliance

Check local regulations and standards for water storage, especially for potable water. Some regions require specific materials or designs to ensure water safety.

Maintaining Your Water Tank

1. Regular Cleaning and Inspection

Tanks should be inspected at least annually for signs of wear, corrosion, or contamination.

Cleaning is crucial to prevent algae growth, sediment build-up, and contamination. This typically involves draining, scrubbing, and disinfecting the tank.

2. Preventing Algae Growth

Algae can be a significant problem, particularly in tanks exposed to sunlight. Using opaque materials or placing the tank in a shaded area can help mitigate this.

3. Monitoring Water Quality

Regular water quality testing, especially in tanks used for drinking water, is essential. This includes checking for pH levels, bacterial contamination, and other potential pollutants.

4. Repair and Replacement

Promptly repair any leaks, cracks, or damages to the tank or fixtures.

Be aware of the lifespan of your tank. While some materials, like steel, can last decades with proper maintenance, others may have a shorter lifespan and require more frequent replacement.

Advanced Considerations

1. Integration with Rainwater Harvesting

Water tanks can be integrated into rainwater harvesting systems, providing an eco-friendly and cost-effective water source for non-potable uses like irrigation and flushing toilets.

2. Automation and Smart Monitoring

The use of technology in monitoring water levels, quality, and tank integrity is growing. Smart sensors and IoT devices can provide real-time data and alerts for better water management.


Choosing and maintaining the right water tank is a crucial decision that impacts water availability and quality. Understanding the types of tanks available, their maintenance requirements, and compliance with local regulations ensures a safe and efficient water storage solution, whether for personal, agricultural, or industrial use. Investing in the right tank and adhering to proper maintenance practices can secure a reliable water supply for various needs.