Effect of permeable pavement basecourse aggregates on stormwater quality for irrigation reuse

The results showed changes in water quality in the reservoirs. Particularly, there was a decrease in DO and an increase in pH levels in basalt and an increase in turbidity in the dolomite reservoir. DO levels showed a decreasing trend over time, pH showed the highest levels after two weeks and turbidity showed a very large increase after one week water storage. EC changes were functions of interactions between aggregate types and residence times. Comparing the results with current Australian guidelines for water harvesting and reuse revealed permeable pavements with the selected basecourse aggregates and the residence times will generally yield a water quality adequate for reuse for irrigation of green spaces. These results will contribute to sustainable irrigation management of urban green spaces.