Automated Legionella Testing


INDIOTT replaces manual temperature rounds with always-on IoT sensors, real-time alerts and audit-ready logs. You’ll see hot and cold-water temperatures at sentinel outlets, calorifiers, TMVs and high-risk loops—24/7—with evidence aligned to ACOP L8 and HSG274 Part 2, and HTM 04-01 for healthcare.

Automated Legionella testing that keeps you compliant — without clipboards.

How it works

1) Sense
Wireless probes and clamp-on sensors capture hot and cold temperatures at sentinel outlets, calorifiers, secondary returns and TMVs; optional flow/usage events validate flushing and occupancy.

2) Transmit
Low-power devices report via LoRaWAN® or wired inputs to an industrial gateway; secure backhaul over Ethernet/4G/5G sends data to the cloud—ideal for retrofit and complex estates.

3) Act
Rules engine raises alerts (email/SMS/Teams), schedules tasks in your CAFM/BMS, and generates audit reports mapped to ACOP L8 / HSG274 / HTM 04-01 checkpoints. HSE

Designed for ACOP L8, HSG274 Part 2 & HTM 04-01

Our templates embed the key control points from the official guidance, including temperature targets, sentinel outlet routines and record-keeping so you can demonstrate a robust “Written Scheme” in practice. (For healthcare estates, dashboards can be filtered to HTM 04-01 priorities.)

Typical deployment points

Sentinel outlets (nearest & furthest on principal loops), calorifier flow/return, secondary circulation returns, TMVs at risk of heat loss, infrequently used outlets, cold-water storage tanks, high-risk accommodation blocks and clinics. Monthly sentinel checks are standard in guidance; automation simply runs them continuously. Water Hygiene Centre

Installation & onboarding (done with you)

At INDIOTT we don’t just ship sensors—we co-design and stand up a complete regime with you. We start by mapping your Written Scheme, drawings and risk assessment; run a pilot to validate sensor positions and radio coverage; then install and commission with as-builts and labelling. Your team gets toolbox training to run proof-of-test routines, verify probe accuracy and handle alerts from phone or desktop. Post go-live we monitor device health and battery life, push firmware updates, and review incidents to fine-tune thresholds so signal stays high and noise stays low.

Features that make compliance easier

  • Always-on remote monitoring with 1–15-minute heartbeats and event-driven fast reporting.
  • Threshold & anomaly detection: time-to-temp breaches, sustained drift, stagnation indicators.
  • Smart flushing support: schedule prompts, record proof-of-flush, correlate with temperature recovery.
  • Dashboards & floorplans: outlet-level views, loops, buildings and portfolio roll-ups.
  • Integrations: BMS (BACnet/IP, Modbus/TCP via gateway), CAFM (API/webhooks), Single Sign-On.
  • Security & governance: encrypted telemetry, role-based access, immutable logs and full audit trail.
  • Healthcare-ready: reporting aligned to HTM 04-01 Parts A–C. NHS England

FAQs

What temperatures should we hit at outlets?


Hot water should reach ≥50 °C within 1 minute (or ≥55 °C in healthcare); cold should be ≤20 °C—our rules and reports use these thresholds out-of-the-box.

Is automated monitoring acceptable to regulators?


Yes—ACOP L8/HSG274 define what you must achieve and record. Automated systems help you meet the monitoring and record-keeping requirements and provide stronger evidence. (WMSoc has also published guidance for end-users on interpreting remote monitoring data.)

What is a sentinel outlet?


An outlet chosen to represent the nearest and furthest points on a hot/cold distribution loop; it’s used to prove system temperatures meet targets.

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