Commercial Plumbing Maintenance Plans: What They Include and Why Reactive Plumbing Costs More

A commercial plumbing maintenance plan is a scheduled agreement where a plumber proactively inspects, services and certifies your building's plumbing on a set cadence — instead of waiting for something to fail. For any business, reactive plumbing is the expensive option once you add up the real costs: lost trading hours, emergency after-hours rates, water damage to stock and fit-out, and the risk of a compliance breach. Around The Clock Plumbing Pty Ltd, Oakleigh South, runs maintenance plans for businesses across Melbourne's south-east — from single sites to multi-site operators — built around one idea: catch the problem before it closes your doors.

What does a commercial plumbing maintenance plan include?

No two plans are identical, because a café, a petrol station and a strata building have very different plumbing. A good commercial plumbing maintenance plan is built around your site's actual risk, and typically includes:

Scheduled drain maintenance. Preventive jetting and CCTV camera inspection of the drains most likely to block — kitchen lines, floor wastes and car-park pits — before they back up during service.

Backflow prevention testing. Annual testing of testable backflow devices by a licensed plumber, with results lodged to your water authority as required.

Thermostatic mixing valve (TMV) servicing. Annual servicing and calibration of TMVs, which matters especially in healthcare, aged-care and childcare settings.

Grease trap and trade-waste support. Coordinating grease-trap servicing and keeping you aligned with the trade-waste agreement for your premises.

Hot water and gas checks. Servicing of hot water plant and commercial gas appliances so a failure does not shut you down mid-week.

A priority-response agreement. When something does go wrong, plan clients go to the front of the queue.

Documented reporting. A record of every inspection and certificate for your compliance file.

The exact compliance items depend on your site and your water authority, so part of setting up a plan is simply working out what legally applies to you and putting it on a schedule — the commercial equivalent of the plumbing health checks we recommend for homes.

Why does reactive plumbing cost more than a maintenance plan?

'If it isn't broken, don't touch it' feels cheaper, but it rarely is. When commercial plumbing fails without warning, you usually pay several times over. There is the emergency call-out itself, often at after-hours rates. There is the downtime — a restaurant that cannot use its kitchen, or a service station that has to close a forecourt, loses revenue by the hour. There is secondary damage, where a hidden leak rots a floor or ruins stock long before anyone sees water. And there is the compliance risk: a missed backflow test or an overflowing grease trap can bring a notice or a fine from your water authority. A maintenance plan trades a small, predictable scheduled cost for protection against those large, unpredictable ones. It is the same logic as our preventative plumbing maintenance guide for homes, scaled up to the stakes of a business.

What plumbing compliance does a commercial property need scheduled?

Commercial sites carry obligations a house never does, and most run on an annual cycle set by Australian Standards and your local water authority. The common ones are backflow prevention device testing, thermostatic mixing valve servicing, and — for any premises producing food waste, oil or grease — a trade-waste agreement with scheduled grease-trap servicing. Drainage on commercial sites is also a different animal to a home; the causes and fixes for blocked commercial drains are not the same as residential ones, as we explain in commercial versus residential drain blockages. The practical value of a plan is that you are not trying to remember which certificate is due when — it is scheduled, completed and documented for you.

Can one plumber maintain multiple sites?

Yes, and for multi-site operators it is far simpler than juggling a different plumber in every suburb. ATC maintains plumbing for businesses with sites across Victoria — we look after more than 50 BP and Shell service stations for Jasbe Petroleum, several McDonald's restaurants, and community sites such as Ronald McDonald House. One provider means one point of contact, a consistent standard, and a single set of records across every location. Our diagnostic-led approach — fast arrival, an accurate diagnosis with a truck-mounted hydro-jetter running at 5,500 PSI or a CCTV camera, then a permanent fix — is what stops the same fault recurring across a portfolio. For drains we can often reline a failing pipe rather than dig it up; the pipe relining versus replacement decision is one we will walk you through. ATC holds Water Industry Co-ordinator clearance, $20 million public liability cover and a 6-year workmanship guarantee.

Common questions about commercial maintenance plans

How often should commercial drains be cleaned under a plan?

It depends on the site — a busy commercial kitchen may need jetting every few months, while a low-risk office might be annual. We set the cadence based on what your drains actually do, using CCTV to confirm it is working.

What happens if there's an emergency between scheduled visits?

Maintenance-plan clients get priority response. We attend quickly, make the site safe, and because we already know your plumbing we usually diagnose the problem faster.

Is a maintenance plan worth it for a small business?

Often yes — even a single grease trap, backflow device or hot water unit failing at the wrong time can cost more in downtime than a year of scheduled servicing. The plan is scaled to your site, so you are not paying for things you do not have.

Do you handle the compliance paperwork for our water authority?

Yes. We carry out the required testing and servicing and provide the documentation for your compliance file, so certificates stay current and are lodged as needed.

Can you maintain several locations under one agreement?

Yes. We look after multi-site operators across Victoria with one point of contact and consistent records for every site, from retail chains to service-station networks.

Written/reviewed by Christopher Unwin — founder, Around The Clock Plumbing Pty Ltd, Oakleigh South. BPC Licence #50694, Type A gas, 22 years experience. National Council member, Master Plumbers Association.

Updated May 2026