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Tank & Drain Cleaning Services in Sydney

STC Tank Cleaners is a Sydney specialist in one thing: cleaning tanks and drains, and doing it properly. From routine septic pump-outs to emergency grease traps, every service below is handled by an experienced crew with the right truck for the job. We're based in Berkshire Park and cover a 50km radius across Greater Sydney — open 24 hours a day, every day, with fixed pricing you agree on before we start.

STC Tank Cleaners technician on a job site in Sydney

Below is the full range of what we do. Each service has its own page with the detail — how the job works, what it costs to consider, warning signs, and answers to the questions we hear most. Not sure which one you need? Give us a call on 0434 048 887 and we'll work it out with you on the phone.

Our core services

Septic Tank Cleaning

Full pump-outs, sludge and scum removal, and inspections for domestic and commercial septic systems — including liftwells and pumping stations. This is the service we're best known for. If your system is due, backing up, or smelling, this is where to start. See septic tank cleaning →

Sewer Pit Cleaning

We locate the cause of a blocked or overflowing sewer pit, clear it fast, and clean the pit out so it stops happening. Domestic and commercial. See sewer pit cleaning →

Stormwater Drain Cleaning

Blocked stormwater pits and drains cause flooding, pooling, and erosion around your property. We clear silt, leaves, and debris and get water flowing again before the next downpour. See stormwater drain cleaning →

Emergency Grease Trap Cleaning

Compliance-ready grease trap pump-outs for cafés, restaurants, and commercial kitchens — including rapid emergency response when a trap overflows mid-service. See grease trap cleaning →

AWTS Cleaning & Servicing

Aerated Wastewater Treatment Systems need regular desludging and care to keep running and stay compliant. We clean and service AWTS units across Sydney's acreage and rural-residential areas. See AWTS cleaning →

Not sure which service you need?

Describe the problem and we'll tell you straight away what's involved and what it'll cost. No pressure, no call-out fee to talk it through.

Call 0434 048 887

Why homeowners and businesses choose us

  • 25+ years on Sydney tanks. We've seen every kind of system, access problem, and blockage there is.
  • Specialists, not generalists. We only do tanks and drains — no plumbing detours, which means faster jobs and better results.
  • Open 24/7. Emergencies don't wait for business hours, so neither do we. Same-day service for urgent jobs.
  • Fixed pricing. You get an honest, upfront price before we start. You only pay once the job's done.
  • Licensed & insured. Fully licensed with public liability cover, and we dispose of all waste properly.

We also serve these areas

Based in Berkshire Park, we cover a 50km radius across Greater Sydney, the Hawkesbury, the Hills District, Western Sydney, and the Blue Mountains foothills. See our areas we serve, including septic tank cleaning in Penrith.

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Call 0434 048 887