Innocence up in smoke 07/06/2023 FacebookTwitterEmail In 2023, nicotine levels detected in wastewater are at their highest level since 2017 but wastewater shows tobacco use has decreased substantially. This highlights that nicotine use is continuing despite decreased tobacco use. Picture supplied. Neralie Bailey A letter from South Australia’s Chief Public Health Officer, Professor Nicola Spurrier, will be sent to parents and carers warning […] Subscribe or Login to see the rest of the content. Username Password Remember Me Forgot Password