Frequently asked questions.

BlueMetric provides UK water-risk monitoring, compliance, and remediation as one continuous record across every institutional asset class. The subscription bundles three things:

Platform. Continuous LoRaWAN sensor coverage on temperature, humidity and flow, feeding BlueMetric OS — our dashboard and operating system for live status, alerts, weekly certificates and the evidence chain.

Response. A network of certified technicians dispatched when sensors flag a breach. We respond within 4 hours of a threshold breach as standard; faster response bands available.

Annual programme. ACoP L8 risk assessment, ISO 11731 sampling via an accredited partner laboratory, biocide dosing and remediation actions — all bundled into the subscription.

Continuous sensor coverage records temperatures and flow at sentinel outlets and TMV groups every 15 minutes — aligned to the thresholds in the ACoP L8 Approved Code of Practice and the HSE's HSG274 technical guidance.

When a reading crosses a threshold, the platform alerts the duty holder, dispatches a certified technician, and seals the response — what was measured, when, by whom, what was done — into a tamper-evident evidence pack. Weekly compliance certificates are issued automatically.

The annual programme — ACoP L8 risk assessment by a certified Legionella Risk Assessor, ISO 11731 sampling, and any remediation — sits inside the same subscription.

Statutory duty stays with the duty holder. BlueMetric supplies the continuous record and response — it does not replace the Responsible Person, the M&E contractor, or every site inspection.

Yes — the same operating system runs across one site or a whole portfolio. The portfolio view in BlueMetric OS shows every site, every sensor, every certificate in one place. Pricing follows compliance intensity, not sector, so a mixed portfolio with offices, residential and healthcare uses the same subscription model with each site quoted in its appropriate band.

Roll-out is phased: start with a representative pilot, validate, then scale across the portfolio.

Ten institutional asset classes: Offices, Residential, Logistics, PBSA, Retail, Hospitality, Education, Healthcare, Data Centre, and Manufacturing.

Healthcare engagements — including care homes, healthcare REITs and NHS estates — may require additional onboarding while LCA accreditation and NHS framework alignment are in progress.

Legionella is a bacterium found naturally in fresh-water environments. In man-made water systems — particularly those that store, recirculate or aerosolise water — it can multiply to harmful levels and cause Legionnaires' disease, a serious form of pneumonia.

Under the UK Health and Safety at Work Act 1974 and the Control of Substances Hazardous to Health Regulations (COSHH), employers and those in control of premises have a legal duty to assess and manage the risk. The HSE's Approved Code of Practice (ACoP L8) sets out the standard for compliance.

Failure to assess or manage the risk competently can result in serious illness, criminal prosecution, civil liability, and reputational harm. Recent UK prosecutions in the millions of pounds have followed incidents where compliance was nominally in place but execution failed.

Standard controls set out under ACoP L8 and HSG274 include:

Temperature control. Hot water typically stored above 60 °C and distributed so that it reaches the outlet above 55 °C; cold water held below 20 °C. Hot and cold water systems are kept apart to prevent thermal contamination.

Movement. Flushing of infrequently used outlets to prevent stagnation. Dead legs and unused outlets removed where practical.

Cleanliness. Periodic cleaning of cold-water storage tanks, calorifiers, showerheads and hoses. TMV (thermostatic mixing valve) servicing on a defined cadence.

Monitoring. Temperature checks at sentinel outlets, periodic sampling to confirm the controls are working, and a written scheme of control demonstrating what was measured, when, and what was done in response.

BlueMetric extends temperature and flow monitoring from periodic snapshots to a continuous, hashed record, with response and remediation built in.

The Responsible Person (sometimes "duty holder" or "appointed person") is the named individual accountable for managing Legionella risk in a building or estate — usually the employer, facilities director, head of compliance, or a named role under a service-level contract.

Their responsibilities under ACoP L8 typically include: identifying and assessing sources of risk; managing those risks through a documented written scheme of control; ensuring records are kept; appointing competent persons and contractors; and reviewing the scheme regularly.

BlueMetric supplies the evidence layer that the Responsible Person uses — continuous data, hashed records, response logs, weekly certificates. It does not replace the Responsible Person; the statutory duty remains with the named individual.