Press Release – Master Plumbers Gasfitters and Drainlayers NZ Master Plumbers is telling the Government to stop turning a blind eye to compelling evidence that New Zealanders are being put at serious health risk by drinking water with high levels of lead. The comments follow the release of a report from the Dunedin … Master Plumbers is telling the Government to stop turning a blind eye to compelling evidence that New Zealanders are being put at serious health risk by drinking water with high levels of lead. The comments follow the release of a report from the Dunedin City Council into why drinking water in Karitane and Waikouaiti contained elevated levels of lead. Testing showed in some drinking water the level of lead exceeded the allowable level by almost 40 times.