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Continuous Legionella Monitoring

Mind the gap.
Between visits.
24/7.

Periodic rounds leave hours and days unwatched. AQUAIOT monitors water temperature continuously, around the clock, so the gap between visits stops being a blind spot.

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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

Always watching.
Even when
nobody is on site.

The risk that matters develops between rounds. AQUAIOT runs continuously, day and night, weekday and weekend, so nothing happens off the record.

Round-the-clock readings, continuous temperature profiling at tanks, loops, and sentinel outlets, with no gap between scheduled visits.
Alerts the moment risk appears, immediate SMS, email, and app notification when a threshold is breached or a flush is missed, including overnight and at weekends.
A complete, unbroken record, every reading timestamped and logged, so the hours between rounds are documented rather than assumed.
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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 24/7 Monitoring No Between-Visit Gap Unbroken Audit Trail
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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

Continuous Legionella monitoring, answered

What does continuous Legionella monitoring mean?
Continuous monitoring means temperature is recorded around the clock by fixed sensors, rather than at intervals by a person on a round. Every reading is timestamped, logged, and checked against thresholds without pause. The result is an unbroken record instead of a series of disconnected snapshots.
What is the risk with periodic monitoring rounds?
Periodic rounds capture single moments and leave everything in between unobserved. A temperature can drift into the risk window overnight or over a weekend and recover before the next visit, leaving no trace in the record. Continuous monitoring removes that blind spot by watching when nobody is on site.
Does it alert at night and weekends?
Yes. Because monitoring is continuous, alerts fire whenever a threshold is breached or a flush is missed, regardless of the hour or day. Notifications go out by SMS, email, and app, with role-based routing so the right person is told even outside normal hours.
How does continuous monitoring support L8 compliance?
AQUAIOT supports your duty holder responsibilities under HSE ACoP L8 and HSG274 Part 2 by maintaining a complete, tamper-evident temperature record and alerting on drift. A continuous record is far stronger evidence for your written scheme of control than sparse manual entries. Responsibility for the control scheme itself remains with your duty holder.
Does continuous monitoring replace our engineers?
No. It changes what they spend time on. Instead of routine rounds to take readings that a sensor already captures, your team acts on genuine alerts and corrective work. AQUAIOT engineers handle the site survey, installation, and commissioning, and your existing competent staff retain oversight of the regime.
Explore the AQUAIOT range

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Automated Legionella Monitoring Legionella Compliance Monitoring Cold Water Storage Tank Temperature Monitoring Calorifier Temperature Monitoring Sentinel Outlet Monitoring Legionella Monitoring for Schools
Ready when you are

Close the gap between visits for good.

Talk to our engineering team about continuous round-the-clock monitoring and alerts for your water system.

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Continuous Legionella Monitoring – Speak to an AQUAIOT engineer about your estate.
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