Water quality
Water quality management in Main Roads' projects is a necessary environmental responsibility. It is integrated into planning, design, construction and maintenance of the road network.
Main Roads and its contractors must take precautions when involved in activities that may impact on water quality and flow catchments.
Water quality of inland waters, estuaries and the ocean can be decreased by high turbidity, nutrient levels and environmentally harmful dissolved substances. As a result, decreased water quality can impact on aquatic biodiversity and terrestrial ecosystems.
Main Roads endeavours to protect water bodies from spills, heavy metals, hydrocarbons, excessive nutrient levels, erosion sediments and other pollutants. Some examples of how Main Roads seeks to achieve this are through appropriately managing polluted run-off from road surfaces, preventing erosion from road construction sites and minimising sedimentation into waterways.
Water quality management gallery
An important issue for Main Roads: maintaining water quality in water bodies impacted by construction.
Sediment fences (in background) will reduce silt entering Bulimba Creek (behind Mangroves) during rehabilitation of this salt water couch area.
Last updated: 01 June 2009
