Returning to school after a holiday period is a crucial opportunity to verify that water hygiene controls remain effective. School closures, reduced occupancy, and changes in building use can all affect domestic hot and cold water systems if they are not properly managed.
Post-holiday checks help confirm that systems and control measures continue to function as intended before the site returns to normal use. Taking a proactive approach at this stage supports ongoing compliance and reduces the likelihood of issues developing later in the term.
One of the most important checks is understanding how the school building was used during the holiday period.
While schools may officially close for set dates, some areas may remain operational for longer, including offices, caretaker facilities, nurseries, sports halls, kitchens, holiday clubs or community-use areas. This can result in uneven water usage across the site.
Reviewing which outlets were frequently used, intermittently used or not used at all helps identify areas where stagnation may have occurred. This information should feed back into the Legionella risk assessment and routine monitoring arrangements, ensuring they reflect actual building use rather than assumed occupancy.
Booking a Legionella risk assessment helps you understand the specific risks on your site and put the right control measures in place.
This is especially important if building use has changed, areas have been closed for extended periods, or there is uncertainty around existing water hygiene arrangements.
Flushing remains a key control measure within school water hygiene regimes, particularly following periods of low use. After a holiday period, it is important to confirm that flushing routines were carried out where required and that these actions were clearly recorded.
This is also an appropriate time to ensure that responsible persons understand which outlets require regular flushing and why. Changes to staffing, contractors, access arrangements or building layout can sometimes create uncertainty about responsibilities.
Updating duty rotas, displaying clear guidance on flushing responsibilities and using staff briefings to reinforce procedures can help maintain consistency. Clear records should demonstrate not only that flushing took place, but that it was carried out regularly and in line with the site’s risk assessment.
While flushing supports water movement, it should be recognised as a control measure rather than confirmation of overall system condition.
Where parts of the school have had little or no water use during a holiday period, they should be reviewed before normal occupancy resumes.
In many cases, a suitable flushing regime and documented post-holiday checks may be sufficient. However, where outlets or areas have remained unused and routine control measures were not maintained, further recommissioning may be required.
Depending on the length of the closure, system condition and site-specific risk assessment findings, this may include thorough flushing, temperature checks, inspection of relevant assets, water sampling, or cleaning and disinfection where there is evidence of increased risk.
Full system disinfection should be considered where the risk assessment indicates it is necessary, rather than treated as an automatic requirement after every holiday period. Any recommissioning actions should be recorded as part of the school’s water hygiene records.
Water sampling is often misunderstood as a routine requirement, when in reality it is a verification tool that supports confidence in existing control measures.
After a school holiday period, it may be sensible to consider whether sampling would be beneficial, particularly where there are concerns about stagnation, water quality or changes in water usage patterns.
For schools, this may include general bacteria or coliform testing to provide reassurance that water quality remains satisfactory, alongside Legionella sampling where risk assessment findings indicate it is appropriate. Sampling should always align with the specific risks identified at the site rather than being treated as a blanket requirement.
Situations where sampling may be considered include prolonged closures, known water quality concerns, significant changes to building use, previous unsatisfactory results or uncertainty around control measures.
Using sampling selectively and in context helps schools demonstrate a risk-based, proportionate approach to water hygiene management.
If you are unsure whether sampling is needed for your site, specialist advice can help determine whether it is appropriate and what type of testing may be required.
As schools return to normal occupancy, temperature monitoring provides a valuable snapshot of system performance. Post-holiday checks should confirm that hot and cold water temperatures are being consistently achieved at sentinel outlets and that any deviations are promptly investigated.
Where corrective actions have been identified, it is important to ensure they are properly closed out rather than deferred. Reviewing trends and patterns over time is often more meaningful than relying on isolated readings and can help determine whether issues are recurring or linked to specific periods of reduced use.
Typical corrective actions may include additional flushing, adjusting thermostatic controls, investigating poor hot water return temperatures, repairing or replacing faulty components, reviewing outlet use, updating the written scheme of control, or arranging further inspection or sampling where appropriate.
Addressing these issues promptly supports the ongoing effectiveness of the school’s water hygiene controls.
Post-holiday checks should not only focus on past performance. They are also an opportunity to plan ahead for future periods of reduced use.
Findings from one holiday period can inform arrangements for the next, helping reduce the risk of repeated issues. This may include reviewing flushing regimes, confirming responsible persons, updating site-specific checklists, scheduling verification activities where appropriate and checking whether risk assessment findings remain current.
Simple tools such as checklists, calendar reminders and staff briefings can help embed water hygiene management into routine school operations throughout the year.
Effective water hygiene management in schools relies on regular, focused reviews rather than unnecessary additional controls.
School holiday periods provide a valuable opportunity to confirm that existing arrangements remain suitable and effective, particularly where buildings or outlets have been used less frequently.
Where uncertainty exists, seeking specialist guidance can help ensure checks are proportionate and aligned with actual risk.
A calm, risk-based approach supports compliance, protects building users and gives schools greater confidence as normal occupancy resumes.