Key Points
- ACoP L8 requires duty holders to retain records of all monitoring, inspection, cleaning, sampling, and remedial activities relating to Legionella control.
- Monitoring records should be kept for at least five years; risk assessments for the life of the system.
- All Tricel aftercare clients receive access to Watercompliance.online — Hydraclean’s digital compliance portal.
- The portal holds site visit records, PPM schedules, inspection reports, sampling certificates, and fault logs, accessible 24/7 without contacting Hydraclean.
- Clients can enter their own temperature monitoring and flushing records directly; out-of-tolerance readings are flagged automatically.
- Digital records support the golden thread obligations introduced by the Building Safety Act 2022 for higher-risk residential buildings.
What records ACoP L8 requires
ACoP L8 does not prescribe a specific format for compliance records but is clear that records must be kept and must be sufficient to demonstrate that the written scheme of control has been implemented. The records required under a compliant Legionella management programme for a cold water storage tank system include:
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Record type
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What it must contain
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Minimum retention
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|---|---|---|
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Legionella risk assessment
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System description, risk factors identified, control measures required, responsible persons, review date
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Life of the system
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Written scheme of control
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All control measures, frequencies, responsible persons, and monitoring requirements
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Life of the system
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Inspection records
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Date, inspector, condition of tank (interior and exterior), water temperature, deficiencies found, remedial actions recommended and taken
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5 years minimum
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Cleaning and disinfection records
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Date, operative, procedure followed, chemicals used (concentration, contact time), verification sample results
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5 years minimum
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Sampling results
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Sample date, sample point, laboratory name, UKAS schedule number, results (cfu/L for Legionella, parameters for potable), assessment against action levels
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5 years minimum
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Temperature monitoring
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Date, monitoring point, temperature recorded, acceptable range, any out-of-tolerance readings and actions taken
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5 years minimum
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Remedial action log
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Description of deficiency, date identified, date resolved, corrective action taken, sign-off
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5 years minimum
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Responsible person records
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Name and contact details of the appointed responsible person; any changes of personnel
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Life of the appointment
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Why records matter in enforcement
ACoP L8 has special status in UK health and safety law. If enforcement action is taken following a Legionella-related incident, the absence of adequate records can itself constitute evidence of a breach. The ability to produce a complete, dated, and coherent compliance record is the duty holder’s primary means of demonstrating that their obligations were met.
The limitations of paper log books
Paper-based log books remain common in many buildings. They are not inherently non-compliant — ACoP L8 does not require digital records — but they carry practical limitations that create risk for the duty holder:
Single point of failure.
A paper log book held on site can be lost, damaged by water or fire, or simply not found when required. A digital system with off-site backup eliminates this risk.
Incomplete records.
Paper log books require every individual who carries out maintenance or monitoring to physically complete an entry at the time of the work. In practice, entries are missed or completed retrospectively, creating gaps in the record.
Inaccessibility.
Records held on site in a log book are not available remotely. A facilities manager preparing for an audit, an owner reviewing compliance across a portfolio, or an enforcement officer requiring records cannot access them without physically attending the site.
No audit trail for remedial actions.
Paper log books typically record that a deficiency was noted but do not provide a structured mechanism for tracking whether it was resolved and when. An outstanding item can easily be overlooked.
No automated alerts.
A paper log book cannot flag a temperature reading that is outside the acceptable range. The duty holder relies on whoever is recording the reading to notice and act on it.
Watercompliance.online: what it is and what it provides
Watercompliance.online is Hydraclean Ltd’s cloud-based water hygiene compliance portal. All Tricel aftercare clients receive login credentials for Watercompliance.online, giving them direct 24/7 access to their compliance records without contacting Hydraclean.
Site visit records and PPM schedules
Every visit by Hydraclean is recorded on the portal in real time, including the date, operative, work carried out, and findings. Planned preventive maintenance (PPM) schedules are held at site level, so clients can see what is scheduled and when. There is no need to contact Hydraclean to find out when the next inspection or cleaning visit is due.
Reports, certificates, and sampling results
Inspection reports, cleaning certificates, and UKAS sampling certificates are uploaded to the portal as soon as they are available. Clients can view and download these documents immediately — without waiting for them to be emailed or posted. All documents are searchable and held in date order for each site.
Fault tracking
When Hydraclean identifies a deficiency during a site visit — such as a damaged access cover, failed float valve, or inadequate insulation — the finding is logged immediately. The client tracks each deficiency through three stages: identified, in progress, and resolved. Each change of status is date-stamped, creating a complete and auditable remedial action record that satisfies ACoP L8's requirements for recording corrective actions.
Client temperature monitoring and flushing logs
Facilities managers and their teams can enter their own temperature monitoring readings and outlet flushing records directly on the portal. This brings in-house monitoring data into the same compliance record as the contractor-delivered activities, creating a single coherent compliance file. Readings that fall outside the acceptable range are flagged automatically, prompting the responsible person to investigate without waiting for the next site visit.
Benefits by audience
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Audience
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Primary benefit
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|---|---|
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Facilities managers
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24/7 access to all compliance records; no document retrieval delays; automatic alerts for out-of-tolerance readings; a single system for both contractor-delivered and in-house monitoring data
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Building owners
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Documentary evidence that the ACoP L8 duty of care is being met; full visibility of the compliance status of their building without operational involvement; suitable for portfolio review
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Property managers and managing agents
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Compliance records accessible remotely for multi-site oversight; documentation ready for building handover, lease renewal, or vendor due diligence
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Auditors and insurers
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Direct access to a complete, dated, and auditable compliance record; certificates and test results available immediately; remedial action history available in full
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Main contractors and M&E engineers
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Can provide clients with evidence of aftercare provision from day one of handover; compliance record begins immediately, creating a clean baseline
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Healthcare estates managers
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Records align with HTM 04-01 monitoring requirements; UKAS accreditation details included in all certificates; audit-ready documentation at all times
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The Building Safety Act 2022 and the golden thread
The Building Safety Act 2022 gave legislative effect to a concept developed in Dame Judith Hackitt’s 2018 review of building regulations following the Grenfell Tower fire. The review identified a systemic failure in the way information about buildings was created, maintained, and passed on over a building’s life. The concept of the “golden thread” — a complete, accessible, and up-to-date record of a building’s safety information — was introduced as the remedy.
Under the Building Safety Act 2022, the Principal Accountable Person (PAP) for a higher-risk residential building — defined as a building of seven storeys or more (or 18 metres or more in height) with at least two residential units — is required to maintain a safety case. This safety case must demonstrate how building risks are managed, including those arising from water systems.
Cold water storage tank maintenance records are part of this evidence base. A building whose Legionella control programme is fully documented in a searchable, dated, and auditable digital system — with records going back to the point of handover — is in a significantly stronger position than one relying on paper log books, which may be incomplete, damaged, or simply impossible to locate at the point they are required.
Watercompliance.online is designed to provide exactly this kind of continuous, auditable digital compliance record. For Tricel tank customers, records can begin from the point of tank commissioning — before the first inspection or sampling visit — providing a complete history from day one.
Frequently asked questions
What records are required under ACoP L8?
ACoP L8 requires records of: the Legionella risk assessment; the written scheme of control; all inspection findings and the actions taken; all cleaning and disinfection activities (including chemicals used and verification results); sampling results; temperature monitoring data; and remedial action logs. Records must be available to enforcement authorities on request.
How long must ACoP L8 records be kept?
ACoP L8 recommends that monitoring records, inspection records, cleaning records, and sampling results are kept for at least five years. Risk assessments and written schemes of control should be retained for the life of the system to which they apply. Watercompliance.online retains all records securely and clients can access historical records through the portal at any time.
What is Watercompliance.online?
Watercompliance.online is Hydraclean Ltd’s cloud-based water hygiene compliance portal. It holds all compliance documentation — site visit records, PPM schedules, inspection reports, cleaning certificates, sampling results, fault logs, and client monitoring data — in a secure, searchable digital system. All Tricel aftercare clients receive login credentials and can access their records 24 hours a day.
Can facilities managers enter their own data on the portal?
Yes. Facilities managers and their teams can record tap temperature monitoring readings and outlet flushing logs directly on Watercompliance.online. Readings outside the acceptable tolerance range are flagged automatically, alerting the responsible person without waiting for the next contractor visit.
What is the golden thread under the Building Safety Act 2022?
The golden thread refers to a complete, accessible, and up-to-date record of a building’s safety information, maintained throughout the building’s life. Under the Building Safety Act 2022, the Principal Accountable Person for higher-risk residential buildings must maintain a safety case evidencing how risks — including those arising from water systems — are managed. Digital water hygiene compliance records held on Watercompliance.online directly support this obligation.
How are fault and deficiency records tracked on the portal?
When a deficiency is identified during a site visit, it is logged immediately by Hydraclean on the portal. The client tracks each item through three stages — identified, in progress, and resolved — with each change date-stamped. This creates a complete, auditable remedial action record that demonstrates deficiencies were identified and addressed in a timely manner.
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All Tricel Water UK aftercare clients receive access to Watercompliance.online. Contact Tricel to discuss the aftercare package that best fits your building’s compliance needs.
