Legislation and guidance

We can help you find your way around the regulatory framework and understand your obligations.

Do get in touch if you are concerned about how comprehensive your compliance is.
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Some useful links:

• ACOP L8
  Legionnaires’ disease. The control of legionella bacteria in water systems

• ACOP L24
  Approved Code of Practice, Workplace (Health, Safety and Welfare) Regulations, 1992

• Health and Safety Executive

• BESA DW145
  Guide to good practice for the installation of fire and smoke dampers

• BS EN 15780:2025
  Ventilation for buildings – Ductwork – Cleanliness of ventilation systems”

• BS 8680:2020
  Water quality. Water safety plans. Code of Practice

• BS9999:2017
  Code of Practice for Fire safety in the Design Management and Use of Buildings

• COSHH
  Control of substances hazardous to health

• HSG 258
  Controlling airborne contaminants at work. A guide to local exhaust ventilation

• HSG274
  Legionnaire’s disease – Technical guidance. (parts 1,2 and 3)

• HTM 03-01
  Heating and ventilation of health sector buildings

• HTM 04-01
  Safe Water in Healthcare Premises

• HTM 05-01
  Managing Healthcare Fire Safety

• TR19®
  Guidelines from BESA – Cleanliness of Ventilation Systems

• TR19 Air
  Specification for internal cleanliness and hygiene management of ventilation systems

• TR19 Grease
  Specification for Fire Risk Management of Grease Accumulation Within Kitchen Extract Systems

• TR40
  A Guide to Good Practice for Local Exhaust Ventilation

• RRO
  The Regulatory Reform (Fire Safety Order) 2005

• HSW Act
  Health and Safety at Work etc Act 1974

• CIBSE Guide M
  Maintenance engineering and management

• CIBSE Guide B2
  Ventilation and ductwork

• BESA DW144
  Specification for sheet metal ductwork

• BS8580
  Water quality – Risk assessments for Legionella control

• BS 7592 2022
  Sampling for Legionella bacteria in water systems

• “BSI PD 855468 2015
  Guide to the flushing and disinfection of services supplying water for domestic use within buildings and their curtilages

• “BSRIA Guide BG50
  Water treatment for closed heating and cooling systems

• Waterline:
  The journal of the Water Management Society

October 2026

More Airmec Insights.

Posted Oct 21, 2026 · Author: Airmec Essential Services