Is pool pipework plumbing work?

The rule, stated plainly

Practice Note 05-2018 addresses this directly. Work “to pump systems and filters etc. is not plumbing work and does not need sign-off by a licensed plumber”, and the reason is definitional: “The Plumbing Regulations 2008 do not define the connection of recirculation and filtration system pipe work as plumbing work and therefore the work is not required to be undertaken by a licensed or registered plumber.”

That is a clear answer to a question pool owners ask regularly, usually because they have been told conflicting things by a pool installer and a plumber, each of whom has an interest in the answer.

The logic is that this pipework is a closed circuit. Water leaves the pool, passes through a pump and a filter, and returns to the pool. It does not connect to a drinking water supply and it does not discharge to a sewer. The risks the plumbing regime exists to manage — contamination of potable water, and uncontrolled discharge of waste — are not present in a loop that starts and ends in the same body of water.

So a pool installer running and connecting that circuit is doing exactly what the regulations contemplate, and a demand that a licensed plumber sign it off is not founded in the Victorian rules.

The qualification that reverses the answer

The practice note does not stop at the general rule, and the second half is the half that matters most:

“However, where drain pipes are connected to the sewer, or in certain circumstances where allowed by water authorities to be connected to stormwater drains, the connection point is plumbing work that must be undertaken by a licensed plumber.”

The boundary is the point at which pool water stops circulating and starts leaving. Everything inside the loop is not plumbing work. The moment a pipe is joined to the sewer or to a stormwater drain, that join is plumbing work and requires a licensed plumber.

This is not an edge case. Every pool with a sand or cartridge filter produces backwash or waste water, and it has to go somewhere lawful. Where that water may legally be sent differs sharply between states — and in one state the answer is the opposite of another's. We set out the verified positions in emptying and refilling a pool, which covers both the tariff and the discharge rules.

The practical consequence for a pool build is that the water system is usually two jobs, not one: the circuit, which your pool installer can do; and the discharge connection, which needs a licensed plumber. Ask which of the two your quote includes. A quote that covers “all pipework” may or may not include a sewer connection, and it is a specific question with a specific answer.

Nobody in the building chain is checking this

There is a sentence in the practice note that reframes the whole topic: “Building surveyors are not required to seek plumbing” compliance for this work.

Follow that through. The recirculation pipework is not plumbing work, so no plumbing inspection covers it. And the building surveyor is not required to seek plumbing compliance, so the building inspection regime does not pick it up either.

That leaves a real gap, and it is the owner's to close. It is not an argument that the rule is wrong — a closed circuit genuinely does not need the plumbing regime — but it does mean that the quality of the pipework in your backyard rests on the installer's competence rather than on anybody's sign-off.

What the surveyor does look at is the design, at permit stage. A pool permit application must include drawings of the recirculation and filtration system “sufficient to enable the RBS to determine that the proposed work will comply”, and the practice note lists what should be shown:

• detailed drawings of the recirculation and filtration system;
• the location of all suction points including solar suctions, demonstrating they will not be less than 600mm apart; and
• details of the active main drain and outlet covers, or a note that covers will be marked as tested in accordance with AS 1926.3-2010 Appendix A.

The 600mm separation and the tested covers are entrapment controls, and they are the part of the water system the regulations take most seriously. Our guide to pool pump and filter rules and suction entrapment covers why.

What to ask, and what to keep

Three questions settle this on a real project, and they are worth asking before the pipework is buried.

1. Where does the backwash and waste water go? Sewer, stormwater with authority approval, or an on-site arrangement. This determines whether a licensed plumber is needed at all, and it is a question with a documentable answer.

2. Who is making the discharge connection, and are they licensed? If the answer is the pool installer and they are not a licensed plumber, that is the point to raise it — politely, and before it is done. Ask for the plumber's licence number and keep it.

3. Do the as-built suction points match the permit drawings? Not less than 600mm apart, with covers marked as tested to AS 1926.3-2010 Appendix A. This is the one item on the list where a shortfall is a safety issue rather than a paperwork issue, and it becomes invisible once the pool is filled.

What to keep: the compliance certificate for any plumbing work performed, the permit drawings of the recirculation system, and the documentation for the outlet covers. Buried pipework is the least inspectable part of a pool, which is exactly why the paper record of it is worth more than for anything you can still see. If you are still at the quoting stage, our guide to what differs between pool quotes covers where these inclusions usually hide.

Common questions

Sources

• VBA Practice Note 05-2018 — Swimming Pool and Spa Safety (council-published copy)
• Victorian Building Authority — Practice note SP-05
• Water Corporation — Swimming pool discharge regulations

General information only, current at 2026-09-20. Pool rules differ by state and by council, and penalty amounts are updated regularly. Confirm your own obligations with your council or a registered inspector before acting.