Plumber — tasks, one by one

Finding the leak or blockage

Drain cameras, acoustic and thermal leak detectors and smart water meters that flag unusual flow already help locate faults, and apps can suggest likely causes from photos. They narrow the search; opening the wall or the drain and deciding what is actually wrong is still done on site by the plumber.

This rests on what the tools can do rather than on a record of how many plumbers use them, and they help most on the faults that are hardest to see.

Installing and repairing pipes and fittings

This is hand work in cramped, varied spaces — under sinks, in ceilings, in old buildings no two alike — which is far from what current robots do. In Singapore the law also says an individual must not carry out regulated plumbing works, which include installing, repairing and replacing sanitary fittings and drain pipes, unless the individual is a licensed plumber or works under a licensed plumber's direct supervision.

This is one country's law and the state of the technology, not a record of how the work is done; prefabricated plumbing modules made in factories move some of the assembly off site.

Working to code and signing off

Singapore's law requires a business that provides regulated plumbing works to ensure they are carried out by licensed plumbers or people under their direct supervision, and requires owners who want sanitary or water service installation works done to engage only such a person. That puts a named, licensed person behind the work; software can hold the checklist, not the licence.

This is one country's licensing rule; it fixes who answers for the work, not how thoroughly it is checked, and rules on sign-off differ elsewhere.

Quoting, booking and invoicing

Booking platforms, job-management software and payment apps already take much of the scheduling, reminders and invoicing off a plumber's hands, and language tools can draft quotes from notes and photos. For a sole trader this is the part of the week most likely to shrink.

This rests on what the software can do rather than on a record of how many plumbers use it, and an accurate quote for an unusual job still depends on someone who has seen the site.

Explaining the problem to the customer

A customer with water coming through the ceiling wants someone they can trust to tell them what is wrong and what it will cost. Photos and apps can support that conversation; the judgement about what is worth doing now, and the trust that goes with it, sits with the person on site.

This rests on the nature of the work rather than on a record, and would change if customers came to accept remote diagnosis without anyone coming out.

Fitting and servicing smart water devices

Connected water devices add a new kind of job to the trade: fitting them, setting them up and answering the alerts they raise. The device reports the problem; a plumber still has to come and fix it.

This is an inference about where the work is heading, not a measurement of how many such devices are installed.