What excavator do I need for plumbing excavation in NSW?

## Excavator Hire for Plumbing Excavation in NSW Plumbers across Sydney regularly hire mini excavators from BuildHire for sewer repairs, water main connections, drain replacements, and new service installations. A mini excavator is faster, more accurate, and cheaper than manual excavation for most plumbing trenching work. ### Common Plumbing Applications **Sewer repair and replacement:** - Typical trench: 450–600mm wide, 600–1,500mm deep (sewer depth varies significantly) - Recommended machine: 1.7T mini excavator - The 1.7T's 450mm bucket matches standard sewer trench widths **Water main connection:** - Typical trench: 300–450mm wide, 600–900mm deep - Recommended machine: 1T or 1.7T - Water mains are typically shallower than sewer lines **Stormwater drain replacement:** - Typical trench: 300–600mm wide, 600–900mm deep - Recommended machine: 1.7T - Stormwater drains often require wider trenches for larger pipe diameters **Hot water system replacement (external):** - Typically requires a small excavation for the new unit's base and service connections - Recommended machine: 0.8T or 1T ### Sewer Depth in Sydney Sewer depth in Sydney varies significantly by location and age of the infrastructure: - Inner Sydney (older suburbs): 1,500–3,000mm deep (deep sewers from the 19th century) - Outer Sydney (newer suburbs): 600–1,200mm deep For deep sewer work (over 1,500mm), trench shoring is required under NSW Work Health and Safety regulations. The 1.7T can excavate to 2,400mm; the 3.5T to 3,800mm. ### Dial Before You Dig for Plumbing Work Always call 1100 before any plumbing excavation. Sewer and water mains run alongside electrical cables, gas lines, and telecommunications infrastructure. Striking an underground service is the hirer's responsibility. ### Plumbing Excavation in Tight Residential Sites Many Sydney plumbing jobs are in tight residential sites — narrow side passages, established gardens, or properties with limited access. BuildHire's 0.8T (750mm wide) and 1T (900mm wide) mini excavators are designed for exactly these situations. Call BuildHire on 1300 157 882 to discuss your plumbing project and confirm the right machine.