Assessment of contamination levels in methamphetamine-tested properties in New Zealand.

In November 2016, whilst in draft, the New Zealand Standard (NZS8510:2017) for the "Testing and Decontamination of Methamphetamine-Contaminated Properties" considered two acceptable post-decontamination re-occupancy methamphetamine levels; 1.5μg/100cm if the contamination was caused by smoking methamphetamine and 0.5μg/100cm if the contamination was caused by the manufacture of methamphetamine.