Draining a Pool and Backwash in Cairns

Queensland's Environmental Protection Regulation 2019 lists waste water, including backwash from swimming pools, as a prescribed water contaminant, and the Environmental Protection Act 1994 says a person must not unlawfully deposit one in waters, in a roadside gutter or stormwater drainage, or anywhere it could reasonably be expected to wash into them. A pool that is emptied for resurfacing makes the question of where the water goes a real one.

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What draining a pool and backwash in Cairns actually involves

The offence is written plainly: “A person must not— (a) unlawfully deposit a prescribed water contaminant— (i) in waters; or” and “(ii) in a roadside gutter or stormwater drainage; or”, with a wilful deposit carrying “Maximum penalty— (a) if the deposit or release is done wilfully—1,665 penalty units; or”. The Act adds the case of a contaminant placed where it “could reasonably be expected to wash, blow, fall or otherwise move into waters, a roadside gutter or stormwater drainage”. No Cairns council page about draining a pool to sewer or stormwater was read for this site, so this page states only the Queensland rule.

The Cairns rain record

The Bureau of Meteorology's table for Cairns Aero (station 031011) gives mean rainfall of 404.8 mm in January, 437.5 mm in February and 422.1 mm in March, against 33.2 mm in July. The record does not say when pool work should be done. It is one local fact to hold against the provider's schedule: if the pool will be empty or open for any part of the job, ask how the provider plans for rain and where rain-diluted water will go.

A flat backwash hose laid across a lawn away from any drain — pool draining and backwash, Cairns. Illustrative example.

What to ask before the pool is emptied

Ask where the pool water and any wash-down water will go, who holds the answer if a neighbour or the council asks, and whether the quote assumes a particular route. The rain record article sets the months out, and the questions page shows them as a chart.

Ask the provider to put the route for the pool water in the written quote, so that the question is answered before the pool is emptied rather than after.

Heavy rain falling on the surface of a pool under a grey sky — pool draining and backwash, Cairns. Illustrative example.

Pool resurfacing costs and rules check