Written Schemes of Control

Independent Access to Compliant Legionella Documentation Specialists

A Written Scheme of Control is a legal requirement for many premises with water systems at risk of legionella bacteria. Legionella Risk Assessment UK helps dutyholders and responsible persons find qualified specialists who can prepare compliant, site-specific Written Schemes of Control.
We do not write schemes ourselves. Instead, we connect you with experienced third-party providers who understand UK guidance and your legal responsibilities.

What Is a Written Scheme of Control?

A Written Scheme of Control is a documented management plan that explains how legionella risks in a water system are controlled on an ongoing basis. It sets out who is responsible, what tasks must be carried out, and how risks are monitored and reviewed.
Written Schemes are required under:

  • ACOP L8
  • HSG274 Parts 1–3

They are typically developed after a legionella risk assessment and must be kept up to date.

What Does a Written Scheme Usually Include?

While content varies depending on the property and system, a compliant Written Scheme of Control commonly includes:

  • Roles and responsibilities (dutyholder, responsible person)
  • Schematic descriptions of water systems
  • Control measures and operational limits
  • Monitoring schedules and frequencies
  • Corrective actions for non-compliance
  • Record-keeping procedures
  • Review and audit requirements

Your appointed provider will tailor the scheme to your specific site and risks.

Who Needs a Written Scheme of Control?

Written Schemes are typically required for:

  • Commercial and office buildings
  • Hotels and leisure facilities
  • Care homes and healthcare premises
  • Educational establishments
  • Industrial and manufacturing sites
  • Multi-occupancy residential buildings

If your risk assessment references a Written Scheme, you are legally required to have one in place.

How Legionella Risk Assessment UK Helps

We act as an independent introduction platform, matching you with up to three suitable Written Scheme providers based on:

  • Property type and water system complexity
  • Sector and regulatory requirements
  • Location and regional availability
  • Experience and compliance credentials

There are no paid rankings or preferential listings — providers are matched on suitability only.

What to Expect From a Written Scheme Provider

A qualified provider will typically:

  • Review your existing legionella risk assessment
  • Assess current management arrangements
  • Produce a clear, site-specific Written Scheme
  • Ensure alignment with HSG274 and ACOP L8
  • Provide guidance on implementation and review

They may also offer ongoing support if your systems or responsibilities change.

Typical Costs for Written Schemes of Control

Costs depend on:

  • Size and complexity of the water system
  • Number of buildings and outlets
  • Existing documentation quality
  • Sector and compliance level

Once matched, providers will discuss scope, timescales, and pricing directly with you.

Why Use an Independent Matching Service?

  • Avoid generic, non-compliant templates
  • Access specialists familiar with UK guidance
  • Compare approaches and experience
  • Save time sourcing competent providers
  • Maintain impartiality and transparency

Find a Written Scheme Provider

If you need a Written Scheme of Control prepared or reviewed, we can help.
Submit your details and we’ll connect you with qualified specialists operating in your area.