Why do different jurisdictions have different guidelines for management of biosolids?

Just like some specific road rules vary between Australian States and Territories and New Zealand, biosolids guidelines vary too. Each state or country has their own biosolids guidelines to suit their specific conditions while offering adequate protection to human health and the environment.

That having been said, there would be value in standardising the Guidelines across the States and Territories and Federally, and between Australia and New Zealand. The Australian and New Zealand Biosolids Partnership is working to identify inconsistencies and to suggest to legislators improvements that might be made.

A summary of the specific guidelines for biosolids management in Australia and New Zealand can be found here.