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The present research investigated two low impact development measures, permeable pavement and bioretention, to potentially mitigate non-point source pollution in the Lower Rio Grande Valley (LRGV) region of South Texas within the Arroyo Colorado watershed. In the first phase, hydrologic and water quality aspects of porous concrete and permeable interlocking concrete pavers (with and without gravel) were investigated as a surfacing material of permeable pavement, through a field-based study. A significant (p < 0.05) reduction in the runoff volume (98%), peak flow (85%), and suspended solids (80%) were observed from the porous concrete aggregate among all types. The computational model WinSLAMM was used to develop calibrated models (NSE ≥ 0.90, p < 0.05) of monitored pavements to predict runoff reduction for a wide range of rainfall magnitudes, sizes of the installation, and development sizes. Later, the research evaluated recycled concrete aggregate (RCA) as a filter media to analyze the fate of nitrate, orthophosphate, and humic acid through a bench-scale column investigation. Two other recycled materials- crushed glass and rice husks, and a layered media (LM) configuration of three materials were also investigated. HYDRUS-1D is a one-dimensional finite element solute transport and reaction model. This tool was used to simulate and investigate one-dimensional solute transport, adsorption in equilibrium, and reaction kinetics of pollutants in unsaturated media columns. Overall, RCA demonstrated an significantly (p < 0.05) increased orthophosphate removal (73-94%), perhaps due to the presence of Anorthite (a calcium-rich crystalline mineral) and its favorable surface textures to support surface precipitation reaction (kr,d = 0.108 min-1, kr,s = 3.45 min-1) and physisorption (Qmax = 186.9 mg/g) of the phosphate. HYDRUS-estimated results suggested that the thickness and saturated moisture content of the media might influence the removal of nutrients and humic acid. The