A geological assessment of fracking has found the mining method has had no detectable effect on earthquake or volcanic activity in Taranaki, the regional council says.
Taranaki Regional Council commissioned the report on hydraulic fracturing, or fracking, from GNS Science seismologists.
The report says there is no evidence the practice has had any observable impact on natural earthquake activity in Taranaki and it is unlikely it would induce earthquakes that would have a significant effect.
The study assessed 3300 earthquakes recorded between 2000 and late 2011.
The report looked at those that occurred within 10km of a fracking location, and within three months of the process being carried out.
However, only one earthquake fitted that broad criteria.