e3s delivers hydrology and water resource projects tailored to the required solution.  Data collection programs are designed and implemented based on thorough desktop investigations.

Our services include:

  • Hydrological investigations and modelling (surface and groundwater)
    • Water quality and compositional assessments
    • Contaminant fate and transport
    • Soil and geological mapping for water quality
    • Water budgets
    • Infiltration/soakage testing (for stormwater and wastewater disposal)
    • Hydraulic modelling
    • Geographic Information Systems (GIS) and Spatial Data Analysis
  • Water supply, wastewater and stormwater engineering design for new developments
  • Stormwater management and design (quality and quantity), including water sensitive design
  • Project management, consenting and construction supervision
  • Erosion and sediment control plans
  • Independent peer review
  • Multidisciplinary/integrated assessment of environmental impacts


Postal address
P.O. Box 2450
Queenstown 9349

Arrowtown Office
Arrow Lane
Arrowtown 9302

Invercargill Office
Lorn Street
Invercargill 9810

Te Anau Office
Level 1
112 Town Centre
Te Anau 9600

Christchurch Office
Public Trust Suites
Level 1/152 Oxford Terrace
Christchurch Central 8011

(+64) 3 409 8664