Cost of Legionella Risk Assessment
across the UK

# Legionella Risk Assessment Trade Body Accreditation

Legionella risk assessment in the UK is primarily governed by the Health and Safety Executive (HSE) under the Control of Legionella Bacteria in Water Regulations 2010. However, accreditation itself is not mandatory by law; instead, reputable assessors voluntarily seek recognition from established schemes such as UKAS (UK Accreditation Service), which is the national body responsible for assessing and accrediting organisations that provide professional services. Other relevant bodies include the Chartered Institution of Environmental Health (CIEH), which offers professional qualifications and recognition, and the HSE's own guidance framework, which sets the technical standards that assessors should follow. Understanding these distinctions matters because UKAS accreditation specifically verifies that an organisation's assessment processes, staff competence, and quality management meet internationally recognised standards, whereas CIEH credentials indicate that assessors have completed formal training in environmental health practice.

To verify a provider's credentials, you should first ask directly whether they hold UKAS accreditation for legionella assessment and request their accreditation certificate or reference number, which you can then cross-check on the UKAS website. Check whether staff undertaking assessments hold relevant qualifications such as the CIEH Level 2 Award in Legionella Risk Assessment or equivalent, and enquire about their experience and whether they hold professional indemnity insurance. It's also worth asking how they keep up to date with HSE guidance and legislative changes, as legionella regulations are periodically reviewed. Verifying credentials matters significantly because an unaccredited or poorly qualified assessor might miss critical water system risks, potentially exposing your workplace to legal liability, HSE enforcement action, and most importantly, the serious health risks posed by Legionella pneumophila.

Accredited providers typically charge 20