Arsenic levels in the Macleay River catchment, the water and the floodplain have given cause for concern. Questions about the source of the arsenic have often been raised.
UNE Associate Professsor Paul Ashley has written an article titled Natural occurrence of arsenic in the environment and its relevance to the Macleay River catchment. He explains the conditions, the processes and results of arsenic in our environment. Read the article Paul Ashley on Arsenic