18/07/2026
Recruit Spotlight: Greywater Design Challenge 💧
Greywater isn't just "used water" waiting to be reused - it carries salts, boron, soap residue, and fabric particles that can clog filtration systems and reduce water quality if not properly treated. Add in peak morning and evening water flows, and you've got a real engineering challenge.
This recruit group spent the semester designing a solution: a vertical flow sand and gravel filter, built in four purpose-chosen layers - mulch, loamy sand, coarse sand, and fine gravel - each selected for a specific reason, from affordability to proven stormwater filtration performance.
They didn't just design a filter - they scoped the whole system against the Australian Standard (AS 1546.4), clearly defining what was in scope (irrigation-level filtration, water tank, cost estimates) and what wasn't (drinking water, dark greywater from kitchens and dishwashers) - grounding the whole project in real regulation, not just good intentions.
Swipe through to see how they tackled it 👉
Congratulations to Group 2 for the rigour, care, and hard work behind this project 🌊