Water and Wastewater Infrastructure


ADW Johnson has over 20 years’ experience in the design of water and wastewater infrastructure. ADW Johnson’s capabilities include:

  • Preparation of planning and options studies for existing and future water and wastewater infrastructure;
  • Hydraulic analysis, including computer modelling of water distribution and wastewater transportation systems;
  • Concept design, detailed design and tender documentation for water and wastewater infrastructure. This includes the design of pumping stations, water mains, sewer mains and pressure sewer systems;
  • Project management of water and wastewater infrastructure projects; and
  • Construction contract management.


ADW Johnson is the only design services provider to be accredited by Hunter Water Corporation in all four hydraulic disciplines (sewer and water main reticulation, sewer pump stations and low pressure sewer), ensuring that we can provide all the necessary skills to service your project. ADW Johnson is also an approved supplier of design services for a number of other government entities, including Gosford Council, Wyong Council, NSW Aboriginal Land Council and Defence Housing Authority to name a few.