Excavator Operator – Cert III Plumber/Drainer | HR/HC Licence

Sydney Water Tanks & BIOSeptic | Permanent Full time | Smeaton Grange, NSW
$35–$50 per hour, depending on experience, licences and qualifications

Looking for More Than Just Another Excavation or Drainage Job?

Sydney Water Tanks and BIOSeptic are looking for an experienced Excavator Operator with a Certificate III in Plumbing, or drainage experience and a current HR or HC licence who wants varied work and genuine long‑term job security with an established Australian family company.

You’ll help excavate, deliver and install wastewater treatment systems, septic tanks, collection wells and underground concrete water tanks across residential, rural and commercial properties.

If you’re a capable operator who takes pride in doing the job properly and wants a secure, long‑term position, not just another short‑term project, we’d like to hear from you.

About the Role

Reporting directly to the Operations Manager, you will work as part of our installation team across Greater Sydney, regional NSW and the ACT.

Your responsibilities will include:

- Safely operating excavators on residential, rural and commercial sites
- Excavating tank holes to precise depths using laser levels
- Excavating trenches, drainage lines and irrigation areas to specified levels
- Installing wastewater treatment systems, septic tanks, collection wells and underground water tanks
- Completing plumbing and drainage work associated with each installation
- Installing and connecting pipework, pumps and associated system components
- Driving company trucks and transporting excavators, equipment and materials
- Safely loading,



securing and unloading machinery
- Trenching, levelling, backfilling and general site preparation
- Identifying and protecting underground services
- Reading and interpreting site and construction plans
- Conducting daily pre‑start checks and reporting equipment or site issues
- Communicating professionally with clients, builders and trades
- Assisting with hands‑on installation duties when required
- Following company procedures and workplace safety requirements

About You

To be considered, you will have:

- A Certificate III in Plumbing with relevant drainage experience
- Demonstrated excavator operating experience
- A current HR licence (HC preferred)
- A current White Card
- Experience transporting excavators or construction equipment
- Experience undertaking plumbing, drainage, trenching or underground‑services work (detailed excavation, trenching and backfilling)
- The ability to read plans, calculate levels and work safely around underground services
- Strong work ethic, reliability, and commitment to safety
- Good communication, time management, and problem‑solving skills
- A willingness to assist with general installation and site duties
- Flexibility to work overtime and travel to job sites when required
- Current excavator competency documentation or verification of competency is preferred.





The following will be highly regarded:

- An HC heavy vehicle licence
- Wastewater, septic or underground‑tank installation experience
- Experience installing pumps, pipework and irrigation systems
- Residential, rural or civil excavation experience
- Loader operating experience
- Additional relevant plant, machinery or high‑risk work licences

You don’t need to meet every highly regarded requirement. If you have plumbing or drainage experience and demonstrated excavator operating experience, we encourage you to apply.

What We Offer

- $35–$50 per hour, based on your experience, licences and qualifications
- Higher starting rates for candidates with additional relevant skills and qualifications
- Stable, long‑term employment with fortnightly pay
- Varied projects and work locations
- Work phone and company uniform
- Free onsite parking and staff amenities
- A supportive, family‑owned workplace
- The opportunity to broaden your skills across excavation, transport and wastewater installation

About Us

Sydney Water Tanks is part of BIOSeptic, an Australian‑owned and family‑operated business established in 1992.

Based in Smeaton Grange, we design, manufacture, deliver, install and service Australian‑made wastewater systems and underground concrete water tanks. Our installation teams primarily work throughout Greater Sydney and down to Canberra.

At Sydney Water Tanks and BIOSeptic, we value safety, reliability and quality workmanship. You’ll join an experienced team that takes pride in completing every installation safely and professionally.

#J-18808-Ljbffr

📌 Excavator Operator – Cert III Plumber/Drainer | HR/HC Licence (Sydney)
🏢 BioSeptic
📍 Sydney