Additional research is needed to refine information on the possible extent of the salinity problem.
The Lachlan, Murrumbidgee and Namoi Rivers show the largest increase in total salt loads, while the Bogan, Macquarie and Namoi show the largest increase in salinity. For example, water salinity in the Bogan River is predicted to rise from approximately 700 EC units in 1998 to almost 2000 EC units in 2050. Likewise, the Macquarie River rises from approximately 600 to 1700 EC units over the period. The World Health Organisation s recommended limit for safe drinking water is 800 EC units.