Hon EUGENIE SAGE (Green): Returning to fresh water, the Minister will be aware that there was a significant Environment Canterbury report on nitrate levels in groundwater going back over 30 years and 10 years. That report concluded that, over the past decade, nitrate levels were likely or very likely increasing in 51 percent of the wells tested and showed a decrease in only 24 percent. The report concluded, if there had been widespread changes to land-use management happening around the region over the past five to 10 years that we would expect to be seeing some improvements in groundwater quality. Now, the Government has amended the national environmental standards (NES) for fresh water, has the Minister, in preparation for the review of the NES for fresh water in 2023, asked the ministry to do any work about the effectiveness of those regulations to date and whether further changes are likely to be needed—in particular, a reduction in the cap on the use of synthetic nitrogen fertiliser, which is currently at 190 kilograms per hectare per year?