The study showed that groundwater at all three sites was contaminated to some degree according to classification by the department. The extent and type of contamination is dependant on the form, age and quantity of waste, and biogeochemical reactions occurring within the groundwater itself.
In general, the highest and most widespread groundwater contamination was detected at Woodbridge Riverside Park, followed by Bayswater Riverside Gardens and Bicentennial Adenia Park.
The range of contaminants present reflects anecdotal reports of the type of fill dumped at each site with Woodbridge receiving waste from a broad range of residential and industrial sources, and Adenia receiving primarily green and inert waste.
