Written by In many industrial and commercial environments, regular and extreme climate safety showers and eye wash stations are vital components of emergency response systems. These fixtures must deliver clean, reliable water instantly in the event of chemical spills, burns, or other hazardous exposures. While galvanised pipework was once a common choice for plumbing safety showers, it is increasingly seen as outdated and unsuitable for modern safety standards.
Here’s why galvanised pipework is no longer the right solution for safety shower systems:
1. Corrosion and Contamination Risks
Galvanised steel pipes are coated with a layer of zinc to protect against rust. However, over time, this zinc layer breaks down, especially in systems where water is stagnant for long periods—common in rarely activated emergency showers.
As the zinc corrodes, it can:
- Release rust and debris into the water flow.
- Discolour the water, often with a brownish tint.
- Pose a contamination risk, especially harmful to eyes and open wounds.
In emergency situations, the last thing users need is dirty or discoloured water making injuries worse.
2. Bacterial Growth (Legionella Risk)
Stagnant water inside galvanized pipes, combined with internal corrosion, creates a perfect environment for bacterial growth—including Legionella, the bacteria responsible for Legionnaires’ disease.
Modern safety standards (such as ANSI Z358.1 and BS EN 15154) require clean, temperate water delivered immediately. Galvanised pipe systems often struggle to maintain hygiene over time, especially when not in regular use.
3. Reduced Flow Performance
As corrosion builds inside galvanised pipework, internal diameter is reduced, which can lead to:
- Lower water pressure.
- Delayed water delivery.
- Inconsistent flow rates.
This undermines the core function of a safety shower: to provide a powerful and immediate water supply for decontamination.
4. Incompatibility with Modern Safety Standards
Current safety regulations emphasize performance, reliability, and hygiene. Galvanised pipework:
- Does not meet many modern water quality expectations.
Newer materials, such as stainless steel or specialized plastics (e.g., CPVC), are more compatible with temperature control systems and ensure long-term cleanliness.
5. Maintenance and Lifespan Issues
Galvanised systems require more frequent inspection and maintenance. Blockages, corrosion, and leaks are common over time, leading to:
- Higher operational costs.
- Unplanned downtime.
- Safety risks in critical moments.
The Better Alternatives
Today’s best practices for safety shower installation favour:
- Stainless Steel: Corrosion-resistant, hygienic, and long-lasting.
- CPVC or Polypropylene Pipework: Chemically resistant and non-corrosive.
- Pre-insulated Pipework Systems: Ideal for outdoor or temperature-sensitive environments.
Final Thoughts
When it comes to emergency safety equipment, there is no room for compromise. While galvanised pipework served a purpose in the past, it no longer meets the demands of modern safety standards. Upgrading to more reliable and hygienic materials ensures safety showers are ready when needed—and that they deliver clean, consistent water under pressure.
If you’re planning a new installation or upgrading an existing system, choosing the right pipework is a critical step toward full compliance and user safety. Please get in touch if you have any questions.