Willems Infa Group

Willems InfaGroup is an established plumbing and drainage contractor with over 40 years’ industry experience, specialising in commercial, civil, and multi-residential hydraulic works. We deliver end-to-end hydraulic solutions for unit complexes, mixed-use developments, and commercial buildings, with a strong focus on civil drainage, sewer, stormwater, domestic water, and fire services. Our experience in drainage-intensive and groundworks-heavy scopes allows us to manage complex installations efficiently and in line with approved designs and Australian Standards. Our team is equipped with in-house plant and machinery, enabling tight control over program, quality, and coordination with other trades. We are accustomed to working within structured construction environments and alongside builders, engineers, and superintendents to meet programme, safety, and compliance requirements. Licensed, insured, and commercially experienced, Willems InfaGroup provides reliable hydraulic installations with a strong emphasis on buildability, durability, and long-term performance.