Could you please provide the detailed National Wastewater Testing data for methamphetamine, cocaine, heroin, MDMA and fentanyl by testing site and quarter for the quarters from 2019 Q1 to 2021 Q1, inclusive, in spreadsheet form? The results have been reported graphically in aggregated form, for example for Q1 2020, at https://www.police.govt.nz/about-us/publication/national-wastewater-testing-programme-quarter-1-2020. We would need by-sample-site-by-sample-date the raw results, the estimated drug use in grams, and the estimated use in mg per day per capita.

We are a group of economists at AUT and the University of Auckland who are researching issues around illicit drug use and problem gambling as well as whether and how these two are interrelated. Currently, the drug use data are not available at the detail that allows us to use econometric analysis to study the phenomenon.

... making existing data more accessible and usable for research and policy advice.