50+ years combined experience

Competitive Rates

G10/RMS Accredited

ISO Certified

Call Us On:
1300 007 782

SSTC

Group of Companies

CIVIL & PLUMBING
CAPABILITY STATEMENT

ISO Certified


RMS Accredited


Acknowledgement
of Country

SSTC Group of Companies are proud to partner with local Chairman of the Deerubbin Aboriginal Land Council, Uncle Athol Smith, who’s people inhabited the Coonamble,  Gulargambone and Quambone region of NSW.

While Uncle Athol’s Ancestry derives from the Weilwun People, Uncle Athol brings true understanding of Aboriginal culture to SSTC and devotes significant time and passion to working with Aboriginal communities and young people across NSW.

SSTC Group of Companies acknowledges and pays respect to the past, present & future Traditional Custodians and Elders of this nation and the continuation of cultural, spiritual and educational practices of Aboriginal & Torres Strait Islander peoples.

About SSTC

SSTC is an Australian family-owned and operated business delivering integrated services across construction, civil infrastructure and industrial projects throughout Australia.
Founded by Managing Director Liam Sweeten, who served 12 years in the Royal Australian Navy specialising in operational security and boarding operations, SSTC brings strong operational leadership, discipline and safety-focused practices to every project.
Over the past 15+ years, SSTC has grown from a small family business into a national workforce of 110+ personnel, supporting complex construction, infrastructure and defence projects across the east coast of Australia.
SSTC works in partnership with clients from tender stage through to project completion, delivering reliable services that improve site safety, efficiency and project outcomes.

Key Strengths

15+ years industry experience


Australian family-owned and operated


Veteran-owned business


110+ skilled workforce nationwide


Proven experience across construction, civil and defence projects


Strong safety culture and operational leadership


Non-Destructive
Hydro Excavation

SSTC provides non-destructive hydro excavation services for safely exposing underground utilities without damaging existing infrastructure. Using our state- of-the-art Vac-Truck and experienced operators, we deliver precise excavation while maintaining a safe, environmentally responsible work environment.

Key Capabilities

Safe excavation around underground utilities


Eliminates risk of damage to existing services


Environmentally responsible


State-of-the-art equipment


Experienced operators


Precise and controlled


Mechanical
Excavation

SSTC delivers safe and efficient mechanical excavation services across civil infrastructure and utility installation projects. Our experienced operators and modern excavator fleet undertake trenching, bulk excavation and service works in both confined urban environments and large- scale civil sites, ensuring all works meet industry safety standards.

Key Capabilities

Service trenching


Bulk excavation and site preparation


Service installation and infrastructure works


Confined access excavation


Civil infrastructure support


Plumbing

Our skilled plumbing team delivers reliable solutions using modern equipment and industry expertise. From repairs and diagnostics to new construction projects, we focus on quality workmanship and attention to detail.

Key Capabilities

Civil stormwater pit & pipe laying


Residential & commercial construction & fit out


Emergency call outs & repairs


Irrigation


Hot water


Gas fitting


LP Gas fitting


24/7 Emergency call out service


Sewer works


Draining


PLUMBING LICENSE: 459778C

CCTV INSPECTIONS

SSTC uses advanced CCTV inspection technology to assess underground pipelines, drains and sewer systems with high-definition imaging and precise fault detection.

Key Capabilities

HD 4K CCTV pipe inspections


Internal laser mapping for precise fault location


Detailed inspection reporting


Sydney Water Compliant


Jet blasting or
vacuum
extraction for
debris removal


HYDRO JET

SSTC provides high-pressure water jetting for cleaning pipelines, drainage systems and infrastructure across commercial, residential and council environments.

Key Capabilities

Pipe and drain cleaning


Stormwater pit & pipeline maintenance


Grease, grime & debris
removal


Graffiti removal


Hot water jetting


Jetwave high-pressure systems


CONFINED SPACE ENTRY

SSTC provides safe and compliant Confined Space Management services for projects of all sizes. Our experienced team ensures confined space work is carried out in accordance with site procedures, safety requirements and industry standards.

Key Capabilities

Isolations


Permit issuing


Confined space rescue


Confined space establishment


Confined space cleaning


Liquid waste extraction


Emergency response team


GAS DETECTION

SSTC provides trained Confined Space Officers to safely manage confined space operations, including atmospheric monitoring, personnel tracking and compliance with site safety procedures.

Key Capabilities

Confined space entry supervision


Gas testing & atmospheric monitoring


Four & five gas detection systems


Detection of 100+ VOC gases


Personnel entry & exit tracking


Continuous communication & safety Monitoring


Our Assets

3x Cappellotto CAP COMBI 3200 CL Hydro Excavation Truck


2x 15 Tonne Excavator


3x 5.5 Tonne Excavator


4x 1.7 Tonne Mini Excavator


10x Toyota Hilux Utility Fleet Vehicles (Plumbing & Civil)


2x Toyota LandCruiser 79 Series Utility Vehicles


2x Civil Infrastructure Tool Service Van


2x Trailer-Mounted High Pressure Hydro Jetting Unit


CCTV Pipeline Inspection System - 5 Camera Units with Sydney Water Reporting Software


Our Projects

SYD UNI OVAL 1 UPGRADE

Scope of Works

140m non-destructive excavation trench


Stormwater pit installation and connections across Oval 1


Installation of electrical pits and conduits


Safe removal of contaminated asbestos fill


Road cutting and infrastructure reinstatement


SURRY HILLS VILLAGE

Scope of Works

Sydney Water major works (Marriott Street)


Supplied Sydney Water submeters and data loggers


Major defects rectification for The Eve Hotel


Pipe & drain cleaning for 12 months


Retail gas sub-meters for Jemena


Hydraulic works for retail tenancies


CCTV inspections and reporting


Our Projects

WICKS PLACE MARRICKVILLE

Scope of Works

Major Hydraulic defect reporting and CCTV inspections


500+ hydraulic defect reports issued to builder & developer


Removal and replacement of 480 toilets


Hydraulic system redesign to meet AS3500 compliance


Installation of 500+ AAVs


Full rectification of non-compliant plumbing systems


ADINA DARLING HARBOUR

Scope of Works

Full building hydraulic system refit


Installation of hot water, cold water and return systems


Stormwater, sewer, gas and trade waste upgrades


Procure, supply and install all PC items


Basement car park submersible pumps and irrigation installation


Our Clients

Trusted by leading contractors, developers and government agencies across Australia.

Leadership Team

LIAM SWEETEN

Director

JIMMY SWEETEN

National Operations Manager

RIKI MIRINGAORANGI

General Manager

CHRISTINE SARRIS

Office Manager

TIM YORSTON

Estimating Manager

LUUC TATANA

Head Plumber

JAYMES MANSFIELD

Head Civil

Our Certifications

SSTC is accredited to ISO 9001, ISO 45001 and ISO 14001, globally recognised standards for quality, safety and environmental management. These certifications demonstrate our commitment to maintaining high standards across all operations and delivering consistent, reliable service to our clients.

For more information about our services please email info@sstc.net.au.

Contact Us

Phone: 1300 007 782
Landline: (02) 9584 0426


Website: sstc.net.au


@sstc.group

Site Security & Traffic Control © 2026 
menu linkedin facebook pinterest youtube rss twitter instagram facebook-blank rss-blank linkedin-blank pinterest youtube twitter instagram