Eden Marine High School Year 8 students learn about sewage treatment from Council staff. Photo supplied by Bournda Environmental Education Centre.
15 August 2025
It's not every day you swap your school desk for a view of a sludge tank, but that's exactly what 99 Year 8 geography students from Eden Marine High School did on a recent visit to the Merimbula Sewage Treatment Plant.
Over two days, students took a behind-the-scenes look at a piece of major infrastructure that works around the clock, quietly protecting public health and the environment.
Guided by Bega Valley Shire Council's Water and Sewer Services staff, the students explored the journey of wastewater from the moment it arrives at the plant to its safe release or reuse.
Water and Sewer Services Manager, Steve Marshall said the visit was broken into three parts.
"This involved learning how the whole sewage system works, with a tour of the inlet works, the effluent storage pond and a guessing game with six mystery jars," he said.
"The jars held samples of everything from raw sewage to river water, biosolids, sludge, effluent and drinking water.
"There were a few raised eyebrows when students realised the treated effluent was nearly as clear as tap water.
"It was great to see students' curiosity kick in. They asked smart questions, weren't afraid to get close to the process and came away with a new respect for what happens after we flush."
The visit tied directly into the students' geography curriculum, giving them a real-world insight into sewage management, environmental protection and the role of science in the process.
"It's easy to forget infrastructure like this exists. Seeing it first-hand really brings home how much work goes on behind the scenes to keep our waterways clean," Mr Marshall said.
The school visit was run in partnership with the Bournda Environmental Education Centre.
