Stormwater runoff from urban catchments is a significant cause of surface water impairment in the United States. With increasing impervious surface area, runoff volumes, peak flows and pollutant export also increase. To meet water quality and quantity goals, many urban communities are increasingly interested in implementing stormwater BMPs, including PIP system. Hydrologic and water quality modification by a PIP system was examined on a pilot-scale. A bed of concrete pavers was split into three zones; with a different ASTM standard aggregate being used to fill the joints between the concrete pavers in each zone. Experimental design parameters included influent particle concentration, joint filling aggregate size, and influent particle size distribution (NJCAT and winter sand). The PIP joint filling aggregates have an effective porosity varying from 32% to 40%, and a mean initial infiltration rate under the clean filtration aggregate conditions of 398.5 in/hr., 271.4 in/hr., and 245.5 in/hr., respectively. A review of the temporal results showed that as joint filling aggregate in the PICP was aged, effluent TSS concentration tended to be reduced and TSS separation efficiency (β) was increased commensurately. Visual observations also showed that an increased Schmutzdecke formed on the surface and upper jointing material over time. This filter “ripening” was established more rapidly with larger particulate sizes (winter sand), higher influent TSS concentration and finer joint filling aggregates. The particle size distribution results also indicate that the removal efficiency of a PICP is subject to the size of the influent particulate. The 20-year physical simulation of rapid mass loading had a much lower impact on the reduction of infiltration rate than the 20-year progressive TSS loading condition. While PIP allows stormwater to pass through the pavement surface, filtering out sediment and debris over time, the results demonstrated that regular preventative maintenance will be needed to maintain the pavement surface infiltration rate.