A Risk assessment frequency is based upon the plan and policy on the business itself - however, as a good rule of thumb, most risk assessments are completely 2 yearly.
There are some organizations such as the medical industries that have risk assessments completed annually. There is also the possibility of risk assessments being completed 2 yearly with a review after 1 year this is called a risk assessment review.
Water Risk Assessments or WRA’s are part of the health and safety at work act (or come under the health and safety at work act) if you fail to comply with legislation and someone becomes ill or even dies from Legionnaires disease and you do not have a legionella risk assessment in place or a maintenance scheme in place to control the risk you can be fined unto 1 million pounds or more and also be prosecuted for corporate manslaughter.
Short answer: YES
landlords and Businesses both must comply with Legionella legislation For more information, please see below:
A Legionella Risk Assessment provides the foundation for all Legionella control maintenance schemes within your home or corporation - it clearly outlines the risks of legionella within a building and recommends how to rectify these risks and make the site compliant.
The Assessment gives very clear and direct advice on how to maintain each water system present on site and the periodic times of year these maintenance works should be completed, once completed these works should be signed off in the site water logbook as to who completed the works, when they completed the works and any non-conformances found during the visit and what was the escalation process.