Ardmore WTP Rapid Restart Project

Watercare Services Ltd

Location: Auckland, New Zealand
Value: $5M +
Completed: 2013


Construction of new overflow capabilities to allow offspec water to be quickly discharged to waste, and then return the plant to normal operation. This required a range of work to be undertaken:

  • CLS Pipelaying
  • Removal of a section of 1962OD CLS pipe and capping
  • Drainage up to 1800NB RCRRJ pipes
  • Pipe Jacking using TBM, 1050NB
  • Large shafts up to 8m deep
  • Insitu Concrete structures up to 6m deep
  • Pneumatic actuated penstocks up to 2.5m x 2.0m
  • Electrical instrumentation and controls
  • Air system upgrade
  • Supply of three custom built 3000l air receivers


  • earthworks
  • drainage
  • open trenching
  • large diameter CLS pipelines
  • microtunnelled 1050NB pipes
  • manhole construction
  • mechanical and electrical works
  • deep shafts,
  • mechanical works