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Legionella Data Logging

No more clipboards.
No more gaps.
Just the record.

Paper logbooks have gaps, late entries, and the odd readable-only-by-the-author scrawl. AQUAIOT logs every reading automatically with secure timestamps, so the record is complete, tamper-evident, and exportable in minutes.

Speak to an Expert See how it works
Live monitoring. Continuous compliance.
AQUAIOT L8 Dashboard
42Outlets OK
3Caution
1Alert
Sentinel Outlets – Live
Tank A – Cold Feed18.4°COK
Outlet 7 – HWS Return49.1°CCaution
Outlet 12 – Sentinel56.8°CAlert
CW Tank B17.2°COK
Man-in-a-van visits leave gapsInspection sheets capture one moment. Between rounds, temperatures drift unseen, and your compliance record has no answer for it.
Legionella thrives between 20C and 45CRisk conditions develop and resolve between visits. Manual schedules cannot catch what happens overnight.
Audit prep should not take daysWhen an inspector asks for records, paper logbooks take days to compile. A digital audit trail is instant.
Every missed flush is a duty-of-care gapOne undocumented flushing event is a defensible record waiting to fail under legal scrutiny.
The AQUAIOT Solution

Automatic.
Tamper-evident.
Exportable.

Manual logging is the weakest link in many water regimes. AQUAIOT replaces handwritten rounds with continuous automatic logging, so the record reflects what actually happened rather than what was found time to write down.

Logged automatically, continuously, every temperature reading captured by the sensor and recorded without anyone writing it down or missing a round.
Tamper-evident timestamps, each entry held with a secure timestamp, so the record cannot be quietly backfilled or amended after the fact.
Exportable on demand, produce a complete, gap-free record for an inspector, insurer, or HSE enquiry in minutes, not days of compiling paper.
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Live Outlet Status
CW Tank – Return Temp16.8°C
HWS Flow – Calorifier60.4°C
HWS Return – Loop 349.3°C
Sentinel Outlet 1256.8°C
Alert triggered – Outlet 12
Temperature above L8 calorifier threshold. Notification sent 14:32.
How It Works

Three steps to continuous L8 compliance

Step 01

Monitor

AQUAIOT sensors are deployed at tanks, loops, calorifiers, and sentinel outlets. Temperature is profiled continuously, every reading timestamped and logged to the cloud over secure cellular or LoRaWAN telemetry.

Step 02

Alert

When temperatures drift outside HSE L8 thresholds, or when a scheduled flush is missed, AQUAIOT triggers an immediate alert via SMS, email, or app, with role-based escalation rules for your estates team.

Step 03

Record

Every reading, alert, and action is captured in tamper-evident audit logs. Records are exportable on demand and integrate with CAFM, BMS, and AIMS systems, so audit preparation is minutes, not days.

Capabilities

Everything your L8 programme needs

Purpose-built for estates, facilities, and compliance teams managing water systems across single or multiple sites.

Real-time temperature profiling

Continuous monitoring at tanks, calorifiers, loops, and sentinel outlets. Every reading timestamped and stored, never a gap in your record.

HSE L8 threshold alerting

Thresholds checked against HSE L8 and ACoP guidance. Alerts fired immediately when cold water exceeds 20C or hot water falls below 50C at point of use.

Missed-flush detection

AQUAIOT detects when scheduled flushing routines are not completed and generates an automatic alert, so no event is undocumented.

Tamper-evident audit trails

Every reading and action is logged with a secure, unalterable timestamp. Exportable records ready for audit, inspection, or HSE enquiry at any time.

API / BMS / CAFM integration

Open and interoperable. AQUAIOT connects to your existing SCADA, AIMS, CAFM, and BMS platforms via RS485/Modbus or REST API, no lock-in.

Retrofit-friendly deployment

Non-invasive sensors designed for live environments. No pipe cutting, no shutdown. AQUAIOT engineers handle site survey, installation, and commissioning.

Compliance & Standards

Aligned to the standards your auditors check.

HSE L8 & HSG274 Part 2 Automatic Logging Tamper-Evident Export On Demand
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No commitment. Talk to our engineering team.

Who It’s For

Built for the teams responsible

Housing Providers

Protect tenants. Prove compliance.

Housing associations and registered providers carry a statutory duty of care over water systems in their properties. Manual L8 management across multiple sites is operationally fragile, and increasingly under scrutiny.

  • Continuous monitoring across all properties, single dashboard view
  • Automatic alerts when vacant properties develop risk conditions
  • Audit-ready records for insurance, regulatory, and legal purposes
  • CAFM and property management system integration
NHS & Public Sector

Clinical-grade water safety. Without the admin burden.

NHS Estates and public sector facilities operate under HTM 04-01 and HSE L8 obligations. The complexity of large estates, multiple buildings, and dense pipework makes manual monitoring inadequate at scale.

  • Dense outlet coverage across clinical environments
  • Real-time temperature monitoring at thermostatic mixing valves and outlets
  • Integration with existing BMS and CAFM infrastructure
  • Automated compliance records compatible with HTM 04-01 requirements
Facilities & Estates

Less time on rounds. More time on management.

Commercial estates, universities, leisure facilities, and large offices face the same challenge: manual L8 inspection rounds are resource-intensive and provide only a snapshot. Automation changes that calculus entirely.

  • Replace labour-intensive manual rounds with automated monitoring
  • Role-based dashboard access for estates managers, deputies, and contractors
  • Reduce reactive call-outs, detect issues before they escalate
  • On-demand compliance reports for building managers and insurers
Defence & Secure Sites

Secure by design. Compliant by default.

Defence estates, MoD sites, and government facilities carry the same L8 duty of care as any other property, often across aging, complex pipework that is hard to reach and harder to document. Manual rounds leave gaps AQUAIOT closes permanently.

  • Encrypted telemetry, cellular and LoRaWAN with secure payload transmission
  • Tamper-evident immutable logs with timestamps and user actions
  • Role-based dashboard access, right records to the right people
  • Auditable compliance records meeting MoD and government estate requirements
Open, interoperable systems. No lock-in. Engineered for operational environments.
Cellular + LoRaWAN telemetry Encrypted payloads & OTA updates RS485/Modbus + REST API Role-based cloud dashboards CAFM / BMS compatible
Questions & Answers

Legionella data logging, answered

How is automated data logging different from a paper logbook?
A paper logbook depends on someone visiting each point, taking a reading, and writing it down legibly and on time. Automated logging captures every reading directly from the sensor, continuously, with no manual step to forget or rush. The result is a complete, consistent record instead of one with the gaps and late entries that manual logbooks accumulate.
What makes the records tamper-evident?
Each reading and alert is stored with a secure timestamp in tamper-evident logs, so entries cannot be quietly backfilled or altered after the event. This matters when a record may be examined under legal, regulatory, or insurance scrutiny, because it shows what was measured, exactly when, and that the data was not edited to fit.
How quickly can we export the records?
On demand, in minutes. Because the data is already structured and stored continuously, you can produce a complete record for a given asset or period for an inspector, insurer, or HSE enquiry almost immediately. Compiling the same picture from paper logbooks typically takes days and may still contain gaps.
Does automated logging cover every monitored point?
Yes. Every sensor across tanks, calorifiers, loops, thermostatic mixing valves, and sentinel outlets logs continuously to the same record. Missed flushes and threshold breaches are logged alongside temperatures, so the trail captures both the readings and the events, not just the routine numbers.
Does digital logging satisfy our compliance recordkeeping?
It strengthens it. A continuous, tamper-evident, exportable record is far stronger evidence for your written scheme of control than sparse manual entries, and it supports your duty holder responsibilities under HSE ACoP L8 and HSG274 Part 2. Responsibility for the control regime and the records remains with your duty holder; AQUAIOT makes the evidence robust.
Explore the AQUAIOT range

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Automated Legionella Monitoring Multi-Site Legionella Monitoring Legionella Flushing Monitoring Legionella Monitoring Service ACOP L8 Legionella Monitoring Legionella Monitoring for Food and Drink Manufacturing
Ready when you are

Retire the logbook.

Talk to our engineering team about automatic, tamper-evident data logging and on-demand exports for your water system.

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Legionella Data Logging – Speak to an AQUAIOT engineer about your estate.
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