Resources

Understanding Property Contamination

The science, methodology, and context behind methamphetamine contamination testing — explained plainly, informed by the research behind Buried Truth.

This resource draws on scientific methodology, New Zealand Standard NZS 8510:2017, and the research and field observations documented in Buried Truth. It reflects our history in methamphetamine testing — Todd Sheppard is the founder of EnviroCheck and a pioneer in New Zealand's methamphetamine property-testing industry, with involvement dating back to 2011. For help making sense of a specific laboratory report, see our guide to understanding meth test results. It is an educational resource — not professional advice, legal guidance, or a substitute for a professional assessment.

Questions to Ask Before You Test

  • Does the testing company also provide remediation services?
  • What sampling methodology will be used, and how many samples will be taken?
  • How are sample locations selected — and why?
  • What laboratory will analyse the samples, and under what standard?
  • How will the result be interpreted — and what happens at different result levels?
  • Is the testing report independently verifiable?

This page is an educational resource. It does not constitute a professional contamination assessment, legal advice, or a recommendation about any specific property. All contamination concerns should be assessed by a qualified testing professional.

Concerned About a Property?

Talk to an independent EnviroCheck assessor.