What is geothermal water?
Geothermal water refers to any surface or groundwater naturally heated within the earth to a temperature of 30ºC or higher.
Consents for Geothermal Water Takes
In the BOP region, farmers and growers who are taking geothermal water, whether it’s groundwater from a bore or surface water, will require a resource consent, regardless of the use and volume.
For Waikato and Northland farmers and growers, minor water takes of water from geothermal development systems are a permitted activity, subject to a number of conditions. Any larger water takes, or those that are within the vicinity of significant geothermal features, will require a resource consent. Your local Regional Council will be able to advise whether your take is permitted.
Where are the geothermal areas?
The Taupo Volcanic Zone is the most active geothermal zone in New Zealand and covers the area from the Central North Island volcanoes out into the Bay of Plenty and includes Whakaari, White Island. Most of the large geothermal power stations are in this region, around Taupō and Kawerau.
The Rotorua Geothermal System underlies Rotorua city and is part of the Taupo Volcanic zone. Geothermal heat from this system is carefully managed to ensure effects on surface features (geysers, mudpools etc) is minimised. Heat is generally used for domestic heating in commercial properties and homes and for heating pools.
The Tauranga Geothermal System is a large low-temperature geothermal system (between 30°C and 70°C) that extends from Katikati-Waihi Beach to Te Puke-Maketu. Warm water from this system is commonly used for domestic heating, heating pools and for irrigation and frost protection.
Geothermal Development Systems
These are identified as distinct geothermal energy zones, that are isolated from any hydrological connection to other areas. The Regional Council oversees the management of these zones as separate entities, potentially employing unique management strategies compared to other zones within the region. These can be utilised in agriculture and horticulture for irrigation and frost protection.
Need more information?
Your local Regional Council will be able assist with geothermal matters in your region.
Jessica Hunter – Environmental Consultant