Sewer infrastructure is one of the most critical components in any development. At Hammond Civil, we provide complete sewer infrastructure and trenching Coffs Harbour, delivering systems that are functional, compliant, and built to perform over time. From design and trenching to pipe installation and final testing, we manage the entire process in-house. Our team is available to discuss upcoming projects, provide technical input, and deliver scope-based quotes suited to your timeline and site conditions.
A well-constructed sewer system moves wastewater safely from buildings to the appropriate treatment or discharge points. These systems include gravity mains, rising mains, connection branches, pump stations, and manholes that must all work together efficiently.
Hammond Civil installs sewer networks using durable materials such as PVC, ductile iron, and concrete, chosen based on capacity, load, and soil conditions. Where required, we include manholes and access points for inspection and maintenance. All installations are completed to meet Australian Standards and the Water Services Association of Australia (WSA) codes.
Trenching is the first major step in sewer infrastructure delivery. It involves controlled excavation to the required depth and gradient, enabling pipework to be installed with proper fall and structural support. Trenching also includes preparation of the trench floor, placement of bedding materials, and the correct method of backfilling and compaction.
Our team adjusts trench profiles to suit site-specific conditions, including variable subgrade materials or deep excavation requirements. We also apply trench shoring where needed, ensuring safety and structural stability throughout the process. Hammond Civil follows Coffs Harbour council trenching standards and uses best-practice methods to ensure long-term performance of installed networks.
We manage every element of sewer infrastructure construction. This begins with layout and set-out, followed by excavation, trench preparation, and pipe installation. Where pump stations or deeper systems are involved, we coordinate the installation of associated civil structures and ensure all connections are sealed, tested, and documented.
Once pipework is installed, pressure or air testing is conducted as required. All completed sections undergo visual inspection and verification, ensuring the system meets design specifications and compliance requirements. Final documentation is prepared for engineering review or council sign-off.
Hammond Civil has delivered sewer infrastructure for residential estates, industrial subdivisions, and public infrastructure upgrades. Our past projects include deep trunk sewer mains, pump stations, rising mains, and house service connections. We understand the staging, inspection, and coordination requirements that come with multi-lot subdivision work and ensure our approach aligns with both developer and authority expectations.
Whether we are working alongside design engineers or managing the job as part of a broader civil package, our team brings consistency, experience, and technical discipline to each stage.
Working with underground services requires a strong focus on safety and quality control. Hammond Civil uses accredited locating services before trenching begins, and applies appropriate risk management procedures for deep or unstable excavations.
Our crews are trained in trench safety, confined space entry, and pipe installation standards. We apply strict quality assurance procedures across all trenching and pipeworks, including bedding inspections, compaction tests, and test reports. All work is delivered in line with Coffs Harbour City Council requirements and state-level water authority standards.
We are a locally owned and operated business with more than 30 years of civil construction experience. Our team delivers sewer infrastructure and trenching projects without relying on third-party contractors, ensuring better coordination, quality control, and communication. Every project is managed with attention to technical requirements, regulatory compliance, and practical outcomes.
Clients work with us because we are consistent, accountable, and easy to work with. We understand that every site is different and tailor our approach accordingly.
If you are planning sewer infrastructure or trenching work in the Coffs Harbour region, Hammond Civil can assist with clear advice, scoped delivery, and high-standard workmanship. Contact us to arrange a consultation or submit plans for review. Our team is ready to provide efficient, compliant solutions that meet project timelines and long-term performance needs.