Citi Design is an Australian firm, based in Brisbane, with over 20 years of experience specialising in hydraulic and plumbing design for commercial, industrial, residential and trade-waste projects. They offer a comprehensive range of services — including stormwater drainage, sewer-drain plumbing design, hot- and cold-water supply systems, grease-trap design, wastewater pre-treatment, septic-systems design, water-meter audits, and trade-waste drainage layout. What distinguishes Citi Design is that they combine precise CAD-based hydraulic designs with on-site plumbing and construction expertise. This integrated approach ensures that designs are not only compliant with authority regulations but also practical and feasible to implement.