Legionella Risk Assessments

As a leading legionella risk assessment company, Zeta has developed a practical, colour-coded risk rating system to help property owners prioritise remedial action and implement controls:

Red – High Risk – Immediate action required

Yellow – Moderate Risk– Warning, cause for concern

Blue – Minor Risk– Improvement required

Our risk assessment framework aligns directly with:

• HSG274 Part 1 – Evaporative Cooling Systems
• HSG274 Part 2 – Hot and Cold Water Systems
• HSG274 Part 3 – Other Risk Systems

This gives you a clear roadmap to compliance, whether you manage a commercial property, a school, a healthcare site, or an industrial facility.

Raising internal awareness is essential to long-term water safety. Zeta provides a suite of legionella training courses designed to educate facilities teams and duty holders on detection, prevention, and control.

Our courses cover:

• Legionella risk basics and regulatory responsibilities
• Hot and cold water system management
• Legionella in high-risk settings (e.g. healthcare, education, construction)
• Practical preventative measures

By investing in training, your team becomes the first line of defence—reducing the likelihood of emergency callouts and ensuring continuous compliance.

As one of the UK’s most experienced legionella risk assessment companies, Zeta offers:

• Fully accredited assessors and consultants
• Nationwide coverage with consistent, high-quality delivery
• Independent, unbiased reporting
• Strategic support from assessment through to resolution
• Experience with complex, high-risk, and multi-site portfolios

Whether you’re reviewing risk across a single site or require a scalable partner for multiple properties, Zeta is a trusted choice for water safety compliance.