Notes for the people who run water hygiene businesses

19 August 2026

6 min read

What an engineer actually looks at inside your cold water tank

The annual cold water storage tank inspection is a judgement call. What an engineer checks inside the tank, and when a look becomes a full clean and disinfection.

compliance · field operations

17 August 2026

4 min read

The invoicing screen demos well. Ask what's inside the PDF

Every field-service platform shows the same invoicing demo: lines, logo, send, sync. The differences that will matter by 2029 are invisible on screen — five questions that surface them.

choosing software

13 August 2026

5 min read

E-invoicing has a timetable now. Here's the part that touches you

Country-by-country e-invoicing deadlines as verified in August 2026 — what's already law, what's coming, the UK's April 2029 date, and the two things worth doing about it this year.

running the business

12 August 2026

6 min read

Landlords: there's no such thing as a 'legionella certificate'

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

An e-invoice is not a PDF of your invoice

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

Adding a second service line without wrecking your margin

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

Servicing a TMV, and the failsafe test that's the point of it

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

In a heatwave, your cold water stops being cold

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

Every water hygiene task and how often, on one page

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

'Works offline' usually means a read-only cache

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