National Rock Sawing has vast experience in all facets of Sydney Water watermain installation.

We can provide the following services:

  • Meter to mains connections
  • Watermain extensions
  • Watermain amplifications
  • Watermain diversions
  • Water reticulation
  • Recycled water
  • On-grade boring for water installation
  • Encasing of water pipes


National Rock Sawing has extensive knowledge and experience in undertaking all aspects of Sydney Water wastewater installation.

Contact our experienced team for services in the following areas:

  • Sewer diversions
  • Sewermain extensions
  • Sewermain amplifications
  • Sewer encasements
  • Property connection sidelines
  • Property connection points (Junctions)
  • Manhole construction
  • Maintenance shafts & terminal maintenance shafts
  • Vent shaft installation
  • Sewerage reticulation
  • On-grade boring for sewer installation


National Rock Sawing is a proven leader in delivering stormwater projects for both Sydney Water and for Councils.

We can provide the following services:

  • Construct cast in-situ bases of any size for precast culvert sections
  • Installation of precast and cast in-situ stormwater culverts of any size
  • Installation of any size stormwater pipes
  • Construction and installation any size cast in-situ stormwater pits from the smallest kerb inlet pits to the largest OSD tanks
  • Installation of precast kerb inlet pits