Citi Design is an Australian hydraulic-plumbing engineering consultancy with over 20 years of experience, based in Brisbane but offering services across Australia. They specialize in designing comprehensive plumbing and drainage systems — including sewage, stormwater, waste-water treatment, hot/cold water supply, grease-trap and trade-waste systems — for a variety of clients such as restaurants, food-production facilities, multi-residential complexes, and commercial properties. What makes them distinctive is their combined offering: they deliver professional CAD-based hydraulic designs and leverage on-site plumbing and construction expertise. This ensures designs are not only technically compliant with local authorities, but also practically feasible and cost-effective for real-world implementation.