New Zealand

Water & Wastewater

CPG designs and develops innovative solutions to water and wastewater issues for our clients drawing expertise from our team of experienced civil, agricultural and natural resources engineers, biotechnologists and modellers.

Having completed multiple projects with requirements including potable and stormwater treatment design, water resource and industrial wastewater assessments, environmental monitoring and biosolid handling and treatment, our broad range of skill and experience ensure that solutions are delivered on time and on budget. We also draw on the expertise of our agricultural and forestry science, soil science, air quality science, biotechnology, hydrology and hydro-geology specialists in order to provide a thorough analysis, design, planning, implementation and monitoring service to our clients.

  • Water Resource Assessments
  • Environmental Monitoring
  • Ground Characterisation & Hydraulic Investigations
  • Industrial Wastewater Assessments
  • Potable Water Treatment Design
  • Stormwater Treatment and Attenuation Design
  • Water and Wastewater Reticulation Design
  • Water and Wastewater Pump Station Design
  • Irrigation – Scheme and On Farm Design
  • On Site Wastewater Systems
  • Decentralised Wastewater Treatment
  • Industrial/Municipal Treatment
  • Biosolid Handling and Treatment
  • Land Treatment of Wastewater and Solids
  • Waste to Energy
  • Jacks Point Water Supply, Coneburn, NZ
    Jacks Point Water Supply, Coneburn, NZ
  • Stormwater Treatment System, Christchurch
    Stormwater Treatment System, Christchurch
  • Stream diversion and stormwater treatment at Horokiwi Quarry, Wellington
    Stream diversion and stormwater treatment at Horokiwi Quarry, Wellington
A subsidiary of DownerEdi
CPG