Tom DyerNew water test samples taken from the network servicing Waikouaiti, Karitane and Hawksbury Village have once again returned encouraging results, the Dunedin City Council says. On Friday, results from 65 samples taken between February 12 and 16 all came back below detectable levels for lead. Samples taken from sediment in the Waikouaiti raw water reservoir on February 10, before it was drained, showed lead levels of 17.025mg/kg. Council group manager 3 Waters Tom Dyer said the new sediment results were significantly below Australia and New Zealand’s default guideline value for heavy metals in sediment, of 50 mg/kg for lead. “We have increased the levels of chlorine added at the Waikouaiti water treatment plant to kill any bugs.

Source: Otago Daily Times February 22, 2021 14:26 UTC