bnr-the-future-water
  1. We are WSP
  2. What we do
  3. Services

Water and Wastewater Treatment

Design and management of a diverse range of water treatment process solutions to ensure well-functioning treatment plants and high-quality water.

WSP delivers expert water and wastewater treatment solutions across New Zealand, helping communities access safe, high-quality water through innovative infrastructure and sustainable design. From potable water systems using advanced filtration and disinfection technologies to comprehensive wastewater treatment services—including nutrient removal, biosolids management, and wetland systems—our multidisciplinary team supports every stage of the project lifecycle. With proven experience in planning, design, commissioning, and regulatory support, we help clients meet environmental standards, improve operational efficiency, and future-proof essential water infrastructure.

Potable Water

Our track record includes plant capacities of 0.1 MLD to over 20MLD across NZ. Our services include design of water treatment process solutions as diverse as Cartridge filtration, membrane filtration (currently), UV and Chlorine disinfection, iron and manganese removal, alkalinity and pH correction.

Our Water Treatment services include:

  • Water quality risk assessment (Drinking Water Safety) plans
  • Treatment facilities planning and options assessment
  • Life cycle assessment
  • Treatment process selection & concept design
  • Detail design for bid/tender
  • Design Build owner’s engineering services
  • Design Build & alliance partnerships
  • Construction & commissioning management
  • Automation/SCADA design & implementation
  • Operation & Maintenance manuals
  • Catchment & distribution water quality modelling
  • Consenting and regulatory assistance
Value of water homepage 856 x 425 (2)

Wastewater

Ensuring the quality of water, requires constant focus on wastewater discharge and well-functioning wastewater treatment plants. Our key expertise covers process design, layout and detailed design within biological, chemical and physical wastewater treatment plant process design.

The team contains a balance of theoretical and practical experience in Process, Civil, Structural, Electrical, Instrumentation & Control, and Mechanical resources through to construction management, commissioning and operations.

Our wastewater services include:

  • Assessment of best practical treatment and disposal options
  • Environmental effects assessment
  • Detailed design of physical, chemical and biological treatment systems
  • Operational advice and performance evaluation (Root Cause Analysis)
  • Treatment facility planning & design
  • Nutrient removal
  • Natural treatment systems
  • Wet weather flow treatment
  • Land disposal assessment
  • Wetland treatment systems design
  • Biosolids management
  • Odour control
  • Energy management
  • Construction management
  • Provision of expert evidence for hearings
scl-wsaa-water-and-sewerage-infrastructure-twitter

Related projects