The BlueWave blog
Compliance you can act on, operations that hold up under audit, and the business side nobody writes about. No email walls. For the reference material, see the guides.
12 August 2026
6 min read
The certificate letting agents push isn't a legal requirement. HSE says most landlords can assess the risk themselves. The real duty, and where HMOs differ.
compliance
10 August 2026
6 min read
Half of Europe now runs on structured e-invoices and the UK has named its own date. What an e-invoice actually is, in plain English, and why a PDF no longer counts.
running the business
5 August 2026
6 min read
When a legionella monitoring firm should bolt on closed systems, TMV servicing, cooling towers or tank cleaning, and which of those lines actually compound.
running the business
29 July 2026
6 min read
A thermostatic mixing valve blends hot water down to a safe temperature. The annual service exists to prove its failsafe still shuts off if the cold fails.
compliance · field operations
22 July 2026
6 min read
Your temperature regime assumes cold mains at 8 to 12°C. In a heatwave, stored cold water climbs past 20°C within hours, and the winter control fails.
compliance
16 July 2026
5 min read
The HSG274 monitoring cadences — weekly flushing, monthly sentinels, quarterly showerheads, annual inspections — in one table you can pin to the plant room wall.
compliance
9 July 2026
4 min read
Plant rooms and basements are exactly where field apps die. How to tell genuine offline capture from a cached job list, and a five-minute test to run before you buy.
choosing software · field operations
2 July 2026
7 min read
A hot outlet reading 43°C sits in the legionella growth band. Here is the out-of-parameter workflow almost nobody writes down, from confirming to closing it out.
compliance · field operations
25 June 2026
6 min read
The annual LCA audit turns on records, not kit. What the assessor samples, the competence gap that catches every firm, and a pre-audit checklist.
compliance · running the business
18 June 2026
6 min read
The office retyping what the engineer already wrote is the quiet tax on every paper-based water hygiene firm. Where the cost hides, and how to enter data once.
field operations
BlueWave books the work in, captures the evidence on site, and turns it into records a client or an auditor can actually use. See it on your own workflow.