The Northland Regional Council will hear submissions for and against the granting of 24 applications to take water from the Aupōuri aquifer next week.
The hearing, which will be open to the public, is scheduled to begin, at Te Ahu, at 9.30am on Monday, and is due to end Friday.
Aquifer advocate Karyn Nikora-Kerr, who is opposed to the granting of consents, was hoping for a strong display of public interest in an issue that could have far-reaching implications for the peninsula and its communities.
Twenty-four landowners wish to take up to 6.4 million cubic metres of water a year from the aquifer, attracting 113 submissions, most of them in opposition.
Avocado growers claim the water applied for was a fraction of what went into the aquifer every year, and that converting pasture into orchards would create much-needed jobs.