Dunedin City Council continues to hunt for the source of the lead contamination spikes in drinking water test results from east Otago, and it has started a project to replace 5km of old pipes. It has been 10 days since Waikouaiti, Karitane and Hawksbury were told to stop drinking their tap water, after results from December showed one lead contamination result 40 times the acceptable level. Checkpoint contacted other districts around Aotearoa to find out if Otago's drinking water scare has pushed others to test more frequently.