Clean, safe drinking water is essential for homes, businesses, and entire communities. Yet many people don’t realise how quickly a poorly maintained water tank can become a health risk. One of the most effective ways to protect stored potable water is by using a high-quality tank liner.
Why Water Tanks Need Liners
Water tanks made of concrete, steel, or plastic are all vulnerable to contamination over time. Cracks, rust, and surface deterioration allow bacteria, algae, and chemicals to seep in. Tank liners form a protective barrier between the tank’s interior and the water it holds, preventing direct contact and contamination.
Without a liner:
- Microorganisms like algae can grow inside the tank.
- Rust or concrete residue may leach into the water.
- UV light can affect plastic tanks, weakening structure and safety.
Benefits of Tank Liners for Drinking Water
- Keeps Water Free from Contaminants: Food-grade liners ensure that no chemicals or particles enter your drinking water supply.
- Prevents Bacteria & Algae Growth: Liners eliminate water stagnation points and make cleaning easier, reducing the chance of microbial growth.
- Extends Tank Lifespan: Liners protect the internal surfaces from erosion, leaks, and cracking — which are common causes of tank failure.
- Improves Water Quality & Taste: Clean liners maintain the natural taste of rainwater or treated water by eliminating metallic or cement-like flavours.
Which Liner Materials Are Safe for Potable Water?
The best tank liners for drinking water are made from certified, non-toxic materials, such as:
- Flexible PVC (Food Grade): UV-stabilised, cost-effective, and widely used in residential and commercial tanks.
- Polypropylene (PP): High-strength, chemical-resistant, and suitable for high-temperature environments.
- HDPE (High-Density Polyethylene): Extremely durable and inert, making it ideal for long-term potable water storage.
All materials should comply with AS/NZS 4020 standards for products in contact with drinking water in Australia.

Why Choose Tank Liners Australia by Raven Tanks Australia
At Tank Liners Australia by Raven Tanks Australia, we specialise in providing and installing potable water tank liners that meet Australia’s highest safety standards. Whether you’re lining a new tank or relining an existing one, we offer:
- Custom-fit liners for all tank sizes.
- Fast, professional installation.
- Food-grade, certified materials.
- Maintenance advice and aftercare.
A properly installed, food-grade tank liner is one of the most effective ways to ensure your stored drinking water stays clean, safe, and free of harmful contaminants — for years to come.
Protect your water. Contact us today at 1800 770 899 for a free quote or on-site assessment.





