The Ministry of Health recently provided new information to the NZ public about safe levels of methamphetamine residues in properties where the drug has been used (but not manufactured). It was prepared by ESR (a NZ government owned Crown Research Institute), and draws on the opinions of regulators in the United States and Australia.
The recommended maximum residue levels in the report are:
- 0.5 µg/100cm2 for houses where the drug has been manufactured (unchanged)
- 1.5 µg/100cm2 for houses where the drug has only been used – carpeted
- 2.0 µg/100cm2 for houses where the drug has only been used – uncarpeted
The report identifies babies and toddlers as being at the highest risk from methamphetamine residues, and for this reason higher residue level are acceptable in houses where the original carpets have been removed.
The press release from the Ministry of Health announcing the release of the report said that “…the Ministry of Health believes houses which don't trigger the clean-up levels for methamphetamine are as safe to occupy as any other similar house.” In other words, by testing properties prior to purchase or moving in as a tenant, the new occupiers can have confidence that methamphetamine residues don’t pose any risk to their health.
The Ministry of Health press release regarding this report (and the report itself) can be found using the following link: http://www.health.govt.nz/news-media/media-releases/recommendations-methamphetamine-contamination-clean