Hamilton-based Detective Inspector Graham Pitkethley said the destruction caused by methamphetamine could not be underestimated.
"There are individuals and groups that seek to make money at the expense of those that have addiction issues and are driving the social harm across New Zealand, these groups and individuals will continue to be targeted," he said.
Dunedin-based Detective Inspector Steve Wood said police organised crime groups in the Waikato and southern districts worked together to dismantle the drug supply ring.
"This operation was an excellent example of cooperation between police districts to achieve a common goal of making our respective communities safer," he said.
"Drug use is a driver of numerous other crimes so operations of this nature will continue to be a priority as part of our district's Methamphetamine Action Plan.
"The demand for methamphetamine is fed by those addicted and interventions are required in order to help these people.
"Alongside investigations and prosecutions, we continue to work with Southern Health and other providers."