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Landlord Legionella Monitoring

Tenanted homes.
Scattered wide.
Seen from here.

Landlords carry a duty of care for water safety in let properties, but those properties are scattered and often occupied. AQUAIOT gives remote visibility across the whole portfolio, so risk is managed without knocking on every door.

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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

Every let.
One dashboard.
Without the visits.

A letting portfolio is hard to oversee when properties are dispersed and tenanted. AQUAIOT brings the water systems of every property into one remote view, so a landlord manages risk across the portfolio without a visit to each one.

Portfolio on one screen, the hot and cold water points of every let property feeding a single dashboard, wherever the properties sit.
Fewer tenant visits, continuous remote readings mean risk is checked without arranging access to occupied homes for every routine check.
Evidence of duty of care, tamper-evident records per property that show water safety was monitored, exportable if a tenant, insurer, or court asks.
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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 ACoP L8 Portfolio Visibility Fewer Tenant Visits Duty Of Care Evidence
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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

Landlord Legionella monitoring, answered

Do landlords have a legal duty for Legionella?
Yes. Landlords have a duty of care under health and safety law to assess and control the risk of Legionella exposure to tenants, following the principles of ACoP L8 and HSG274. For most domestic rentals this is proportionate to a simple system, but the duty to assess the risk and keep it controlled is real. Continuous monitoring helps evidence that the duty is being met.
How does monitoring work across scattered properties?
Each property is fitted with sensors that report over cellular and LoRaWAN telemetry, so no fixed network is needed at the property. Every home, wherever it sits, feeds one dashboard, letting a landlord or managing agent oversee the whole portfolio remotely. This suits dispersed lettings far better than arranging a physical round of every individual property.
Does this reduce the need to enter tenanted homes?
It reduces routine access considerably. Because temperatures are read continuously and remotely, a landlord does not need to arrange entry to an occupied home for every routine check. Access is then focused on the properties where a reading actually flags an issue, which is easier for tenants and more efficient for the landlord or agent managing many lets.
What evidence does it give if a tenant complains?
AQUAIOT keeps a continuous, tamper-evident, timestamped record of water temperatures per property, exportable on demand. If a tenant, insurer, or court asks whether water safety was being monitored, you can produce a complete record for that specific property rather than relying on sparse manual notes. This supports the landlord’s duty of care with defensible evidence.
Is it suitable for larger letting portfolios?
Yes. The larger the portfolio, the harder it is to oversee property by property, and the more a single dashboard helps. Alerts route to the right property manager, while a central view shows which lets need attention. This lets managing agents and portfolio landlords prioritise the properties that genuinely need a visit instead of treating every home identically.
Does this make a landlord compliant?
No. Responsibility for assessing and controlling the risk stays with the landlord as duty holder. AQUAIOT provides the continuous monitoring and records that support that duty and evidence it, but the risk assessment and any control actions remain the landlord’s. The system strengthens your position considerably; it does not discharge the legal duty or make you compliant on its own.
Explore the AQUAIOT range

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Automated Legionella Monitoring Digital Legionella Logbook Legionella Temperature Sensors Legionella Monitoring Equipment Legionella Monitoring Software Legionella Monitoring for NHS Estates
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Oversee your lettings from one screen.

Talk to our engineering team about remote water monitoring across your let properties and portfolio.

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