Photo: FileThe maximum allowable level of nitrate in drinking water should be 11 times lower than current rules allow, a public health specialist says. One Cambridge couple, Neville and Denise Ross, had nitrate levels exceeding New Zealand's drinking water standards. It suggested nitrate in drinking water could increase the risk of colorectal cancer by anywhere between 1 and 8 percent. "All of those eight studies [in the US report] showed positive association between nitrate concentration and drinking water, and colorectal cancer. It has been looking into whether the same association between nitrate in drinking water and colorectal cancer exists here.

Source: Otago Daily Times February 09, 2021 19:18 UTC