A survey by Which? Local has been published showing that a company of technicians with plumbing course training is the top-rated trader in Wales.
The research looked at the reviews handed out by customers after using the services of different firms and concluded that Langley Plumbing Services was the best.
John Langley, a member of the Chartered Institute of Heating and Plumbing Engineers, runs the company and has passed several plumbing courses.
Speaking to the South Wales Echo, Which? Local manager Pete Tynan described how the organisation has received "rave" ratings from a number of customers.
"Word of mouth counts for a lot when choosing a local trader and the reviews on Which? Local show how much people value great local businesses," Mr Tynan told the publication.
Langley Plumbing Services, which offers plumbing solutions as well as bathroom design and installation, is now in with a chance of becoming Which? Local business of the year.
Want to know more about our plumbing courses