New figures released by SA Water shed a light on the sustained shift in South Australians’ flushing and rinsing habits, with the utility recording a 40% drop in sewer blockages caused by the ‘unflushables’.

A group of objects, led by wet wipes, cooking fats and oils, and even weird and problematic items such as superhero costumes, the unflushables were responsible for 1746 blockages over a six-month period from October 2021, compared to only 1268 over the same period from October 2022.

The sharp decline has resulted in a more than $230,000 reduction in SA Water’s expenses related to clearing and disposing of blockages between the periods, along with less impact to the environment from overflows.

SA Water’s Infrastructure Planning and Strategy senior manager Daniel Hoefel said the utility was thrilled with how the community had embraced changes to their behaviour at the sink and toilet.

“South Australians should be commended for the role they’re playing to help keep our sewers healthy, and I’d like to thank people for their ongoing support in flushing out the unflushables,” he said.

“It’s clear people are making a concerted effort to break their old habits and consider what they’re putting down the sink, or flushing down the loo, and it’s led to a significant drop in blockages caused by the typical suspects, including cooking fats and oils, tissues and wet wipes.

“During the months leading up to October last year, we invested in community education to help share fun and engaging content with our customers to spark conversations about their habits.

“We needed to break down a few barriers to this behaviour change, such as ingrained habits and the ‘flush and forget’ mindset, and directly call out the real impact on the environment, people’s homes and our pipes.

“Pleasingly, our content generated constructive dialogue and we’re now seeing the cumulative effect of this message trickling through the community, with the trend continuing to move in the right direction.

“Our blockage figures for the past three months were some of the lowest we have seen since the start of the pandemic, which gave rise to a sharper increase in the occurrence of unflushables and reinforced bad habits.

“Our sewers exist to protect the environment and public health, and if we look after them, they’ll look after us.”