Civil Utilities Services
K&J Civil is a specialist civil utilities contractor delivering water, sewer and stormwater infrastructure projects across Queensland. With over 20 years of industry experience, we provide technically robust, compliant and buildable solutions for both new and existing networks.
Our work is focused on live utility environments, large-diameter pipelines and authority-regulated infrastructure, where accuracy, planning and safety are critical.
Our Civil Utilities Capability
We deliver end-to-end civil utility services, supporting projects from early planning through to construction and final handover.
Our core utility services include:
- Water main construction and connections
- Sewer main construction and connections
- Trunk main installations
- Stormwater drainage systems
- Live cut-ins and valve installations
- Authority-compliant utility infrastructure works
We regularly work within road corridors, live networks and high-risk environments, coordinating closely with councils and water authorities.
Water Main Construction & Connections
K&J Civil delivers water main infrastructure for new developments, upgrades and network augmentations.
Water main services include:
- New water main installation
- Live water main cut-ins
- Valve installations (including SGATE systems)
- Pressure and non-pressure pipelines
- Reticulation and network extensions
Our team manages water works from design coordination and approvals through to construction, testing and commissioning.
Sewer Main Construction & Reticulation
We construct sewer infrastructure across a wide range of applications, from small-diameter reticulation to large trunk sewer assets.
Sewer services include:
- Sewer main installation
- Gravity and pressure sewer systems
- Trunk sewer construction
- Sewer connections and diversions
- Complex excavations in live environments
Our crews are experienced in deep excavations, confined spaces and live sewer systems, ensuring safety and compliance at every stage.
Trunk Mains & Large-Diameter Pipelines
K&J Civil has extensive experience delivering large-diameter trunk mains for water and sewer infrastructure projects.
Trunk main capabilities include:
- Large-diameter pipe installation
- Live and offline trunk connections
- Valve chambers and outlet structures
- Deep trench excavation
- Authority inspections and testing
We work with approved materials and methodologies to meet stringent authority specifications and long-term asset performance requirements.
Stormwater Drainage Infrastructure
Our civil utilities capability also includes the construction of stormwater drainage systems for developments and infrastructure projects.
Stormwater services include:
- Stormwater drainage installation
- Pipework, pits and headwalls
- Connection to existing networks
- Coordination with water and sewer services
- Traffic-sensitive and urban works
Stormwater works are delivered in conjunction with broader utility scopes to minimise disruption and programme risk.
Safety, Quality & Authority Compliance
All civil utilities works are delivered in accordance with:
- Current safety legislation and WHS requirements
- Authority specifications (e.g. QUU, Unitywater, councils)
- Project-specific quality and inspection plans
Our systems are designed to reduce risk, minimise rework and ensure compliant infrastructure handover.
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Services & Capabilities
Typical Utility Pipe Sizes & Applications
Infrastructure Type |
Typical Sizes |
Applications |
|---|---|---|
| Water Mains | 50mm – Large Diameter | Reticulation, trunk supply |
| Sewer Mains | Small bore – Trunk sewer | Gravity & pressure systems |
| Stormwater | Various diameters | Drainage & flood management |
| Trunk Mains | Large diameter | Network augmentation |