Enduramaxx 500 Litre Vertical Potable Water Tank with AB air gap weir for up to 25mm inlet

CAT 5 Potable Water Tank – Compliant & Secure Backflow Prevention

Designed to meet strict water safety regulations, this CAT 5 potable water tank provides maximum protection against backflow contamination. Featuring a Type AB Airgap Break System, it ensures a safe separation between the mains water supply and stored water, making it ideal for applications requiring Category 5 backflow prevention compliance.

What is a CAT 5 Tank?

A CAT 5 tank, also known as a Type AB Airgap Break Tank, is specifically designed to prevent backflow contamination by maintaining a physical separation between the main water supply and potentially contaminated stored water. This is achieved through a screened weir overflow system, which ensures that water cannot siphon back into the mains. Fully compliant with Water Supply (Water Fittings) Regulations 1999 and the Scottish Water Byelaws 2004, this tank provides a non-mechanical, reliable method of backflow prevention.

When is a CAT 5 Tank Required?

A CAT 5 tank is necessary whenever there is a risk of contaminated water re-entering the mains supply. This is particularly important in agricultural, commercial, and industrial environments, where water may come into contact with substances that could pose a health risk. If you are unsure whether CAT 5 regulations apply to your system, consulting your local water authority can provide the guidance needed to ensure compliance.

Durable & High-Quality Water Storage

Manufactured from WRAS-approved polymer, this CAT 5 potable water tank meets strict potable water safety regulations, ensuring that stored water remains safe for consumption. The heavy-duty MDPE (mid-density polyethylene) construction provides exceptional impact and corrosion resistance, making it a long-lasting and reliable storage solution. Unlike metal tanks, it is 100% rust-proof and resistant to degradation, even in harsh environmental conditions. Additionally, the tank is UV-stabilised and weatherproof, ensuring durability and performance in both indoor and outdoor installations.

Versatile & Secure Potable Water Storage

This CAT 5 potable water tank is ideal for a variety of applications. It serves as a lifesaving backup for emergency drinking water supply in homes, businesses, and public facilities. It also ensures a continuous and reliable source of clean water for households, farms, and commercial operations. For those using boreholes or spring water sources, this tank provides safe and hygienic storage, protecting water quality while meeting essential regulatory requirements.

With its robust construction, compliance with strict water safety standards, and secure backflow prevention system, this CAT 5 potable water tank is the ideal choice for ensuring safe, reliable, and legally compliant potable water storage.