Investment in infrastructure such as water, wastewater and utilities is designed to support the pattern and timing of growth. 

Water supply is a critical issue, requiring consideration of provision and allocation from surface and groundwater sources and the siting of reservoirs to avoid adverse landscape and cultural impact.

Wastewater treatment for the main urban area continues to centre on Te Maunga, with an ocean outfall.  New technology improves the quality of the discharge.  Water conservation and reuse reduces the amount of discharge relative to population growth. Alternative technologies are continually reviewed and introduced as issues of cost, risk and long term effectiveness are addressed.  An integrated approach is taken to sustainable infrastructure by adopting a best practicable option method.

Small scale pilot programmes to test alternatives are also undertaken.

Services Infrastructure Issues May 2005
Summary of progress on a range of studies and analysis to address network services as a growth management issue. Land and Ocean Discharge of Wastewater 2003
Compares the issues and costs of land application and ocean discharge of treated wastewater. Services Capacity August 2002
Identification of capacity of existing or planned land and services to accommodate growth into the future.