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Legionella Monitoring in Wales

Welsh water risk,
recorded continuously.
Cardiff to the valleys.

Across Cardiff, Swansea, Newport, and Wrexham, and the housing and public estates between them, AQUAIOT fits wireless temperature sensors at tanks, calorifiers, loops, and sentinel taps, checking readings against HSE ACOP L8 and HSG274 Part 2, which apply across Wales, continuously.

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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

Continuous L8 control
for estates spread
across Wales.

Welsh portfolios are shaped by geography, terraced housing threaded through the valleys, towns along both coasts, and public estates scattered from Cardiff to Wrexham. AQUAIOT brings every one of those buildings into a single live L8 record, so the hardest site to reach is monitored as closely as the nearest.

Continuous temperature profiling at tanks, calorifiers, loops, and sentinel outlets across Welsh housing, healthcare, council, and university sites.
Alerts checked against HSE L8 thresholds, with SMS, email, and app notifications and escalation when a reading drifts or a flush is missed.
One dashboard from Cardiff to Wrexham, with tamper-evident audit trails and API, BMS, and CAFM integration.
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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 Applies Across Wales Immutable Timestamped Logs Exportable 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

Legionella monitoring across Wales, answered

Do you cover the whole of Wales?
Yes. AQUAIOT engineers survey, install, and commission across Cardiff, Swansea, Newport, and Wrexham, and across mid and rural Wales, as part of UK-wide coverage. Once the sensors are commissioned, monitoring is fully remote, so a site in the valleys or on the coast reports as reliably as one across the road from the estates office.
Does HSE ACOP L8 apply in Wales?
Yes. The HSE Approved Code of Practice L8 and HSG274 Part 2 apply across Great Britain, including Wales. AQUAIOT checks every temperature against that guidance and supports your written scheme of control with a continuous, tamper-evident record, while the duty holder remains responsible for the overall control scheme.
Can you monitor social housing across the valleys?
Yes. Housing portfolios threaded through the valleys are exactly where manual L8 rounds struggle, with long drives between small clusters of properties and voids that sit unmonitored between tenancies. Fixed sensors give one dashboard across every block and dwelling, with automatic alerts when a low-use or vacant property starts developing risk conditions.
Can you monitor coastal and seasonal properties?
Yes. Hotels, holiday lets, and community buildings along the Welsh coast see occupancy swing hard with the season, and outlets stagnate when rooms sit empty. Sensors at sentinel outlets and loops detect drifting temperatures and flag missed flushing through the off season, so problems are dealt with before guests and visitors return.
Can sensors be fitted without disturbing tenants or residents?
Yes. The sensors are wireless and retrofit-friendly, with no pipe cutting and no shutdown, so installation in an occupied home or communal plant room is a short, tidy visit. Buildings stay live throughout, there is no need to isolate the water system at any point, and engineers schedule the work around access arrangements agreed with your housing team.
Does it integrate with our housing or estates systems?
Yes. AQUAIOT connects to CAFM, BMS, AIMS, and SCADA platforms over RS485/Modbus or REST API, so temperature records and alerts flow into the systems your teams already use. Welsh estates teams keep one source of truth without lock-in, exports are available whenever an auditor asks, and role-based dashboards cover teams working outside those systems.
Explore the AQUAIOT range

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Ready when you are

Stop stretching L8 rounds across Wales.

Talk to our engineering team about continuous monitoring, automated alerts, and audit-ready records across your Welsh estate.

Speak to an Expert Book a Demo 02392 233 611
Legionella Monitoring Wales – Speak to an AQUAIOT engineer about your estate.
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