Work begins to revise NZS 8510:2017 Testing and decontamination of methamphetamine-contaminated properties
Work is underway to revise NZS 8510:2017, the New Zealand standard for testing and decontamination of methamphetamine-contaminated properties, to ensure it reflects current science and provides clarity for the sector.
The revision project, commissioned by Te Tūāpapa Kura Kāinga – the Ministry of Housing and Urban Development, aims to better align the standard with the recent Residential Tenancies (Managing Methamphetamine Contamination) Regulations 2026.
The new regulations are designed to manage methamphetamine contamination in rental properties covered by the Residential Tenancies Act 1986, and came into force in April 2026.
NZS 8510:2017 'Testing and decontamination of methamphetamine-contaminated properties' currently recommends a maximum acceptable level of 1.5 micrograms per 100 square centimetres (µg/100cm²), above which properties should be decontaminated. More recent scientific advice, including work by the former Prime Minister’s Chief Science Advisor and PHF Science, supports a higher threshold of 15 µg/100cm² as appropriate for managing health risks and triggering decontamination.
Supporting effective and evidence-based practice
The revision project aims to ensure management of methamphetamine residue is effective, proportionate to the level of risk, and in line with the current evidence. These outcomes will improve confidence and understanding across a range of affected groups, including property owners, tenants, housing providers, insurers, the property sector, and testing and decontamination companies.
What’s next and when the revised standard will be published
Since April 2026, the standards revision committee—a cross-sector group of industry and subject matter experts—has been developing, drafting and reviewing proposed changes to the NZS 8510:2017.
There will be a public consultation on the revised draft standard in late 2026, for around 8 weeks, during which submissions will be collected and reviewed. In early 2027, the revised standard is expected to be finalised, approved, and published.
In the interim, affected parties should continue to refer to the existing standard NZS 8510:2017, noting any legislative requirements in the Residential Tenancies (Managing Methamphetamine Contamination) Regulations 2026, if they apply to your circumstances. For guidance on these regulations, see the Ministry of Business, Innovation and Employment’s Tenancy Services website:
Guidelines on meth contamination(external link) — Tenancy Services