How we check and score

Listings

Every supplier is compiled from public sources: the PIRB register, supplier and stockist lists and business listings. A listing is marked Verified when the business is a PIRB-registered plumbing company with at least one active licensed plumber on the PIRB register. Listings without that check are marked "Not yet verified".

The check is a register lookup. We have not phoned or emailed the businesses, so names, numbers and addresses are as the public sources give them.

If you run a listed business, claim your listing from its profile page to correct its details.

Website performance score

Listed websites are measured with Google PageSpeed Insights (mobile strategy, performance category), and each score is shown with the date it was measured. We publish the Lighthouse performance score out of 100 and do not edit or weight it.

A site that fails to load at the time of the check is shown as "Website not loading", and a listing with no website is shown as "No website found". In both cases we show no score, because there is nothing to measure.

Area pages

We only publish a service-and-city or suburb page when it has at least three verified suppliers and at least one piece of real local data (such as a municipal outage notice). Pages that fall below that bar are removed from the sitemap.

Borehole cost estimator

Bands are per-metre drilling and casing ranges collected from supplier quotes in 2026, plus fixed ranges for equipping and yield testing. They are estimates, not quotes.

Corrections

Business owners can claim their listing from its profile page to correct it, ask for a listing to be removed, or get a free website check of their own site.