Improvements to Drinking Water

Taumata Arowai, the new independent water services regulator, recently consulted publicly on the drinking water rules for water suppliers. We use a case study on nitrate and official information requests to demonstrate the current weaknesses in the drinking water monitoring and reporting systems and why the reforms proposed by Taumata Arowai seem unlikely to substantively address many of these deficiencies. To ensure sufficient public health surveillance and robust epidemiological research into the potential health impacts of drinking water contaminants, Taumata Arowai should: 1) establish a national database for water supply and quality; 2) mandate the standardisation of reporting requirements across water suppliers; 3) increase the frequency and range of water quality testing; and 4) maintain a national map of water supplies. These upgrades are particularly important in an era of rapid land use changes and climate change.